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These retainers finish up the valve springs for higher HP, more abuse, and higher RPM in your Toyota/Lexus 3UR-FE (Tundra, Sequoia, Land Cruiser, LX570) or 1URFE (Tundra, Sequoia, GX460) engine. These are not required when installing our exclusive in house billet cams, however we strongly recommend installing valve springs and retainers while you are in the engine and upgrading it.

Fits 2014-2020 3UR 5.7 Tundra & Sequoia, 2017-2019 Land Crusier 200 series 5.7, and 2007-2019 Lexus LX570

Harrop is proud to offer the innovative TVS2650 Supercharger Kit to suit the Toyota 3UR-FE 5.7L V8 found in global vehicle platforms like the Toyota Tundra, Landcruiser 200 Series and Lexus LX570. The Australian engineered and manufactured Supercharger Kit utilises the largest, most-efficient rotating group ever produced by Eaton, the TVS2650, which is 40% larger than the TRD TVS1900 supercharger (2650cc VS 1900cc).

As a master distributor of Eaton Supercharger and Traction products, Harrop has experience with the 2650 rotating group, being the first Australian Supercharger system to feature the technology for the LS series of engines.

Harrop FDFI (Front Drive, Front Inlet) Superchargers feature extensive upgrades to the cooling system, to ensure optimum thermal efficiency with the inclusion of twin intercooler cores in the manifold integrated with a front mount radiator and high flow Bosch intercooler pump. The improved intercooler system provides greater thermal and volumetric efficiency to unleash the performance potential of the 3UR-FE 5.7L V8.

Includes all components required for installation into Toyota Tundra, Land-Cruiser 200 and Lexus LX 570 with 5.7L V8 Engines. As well as a direct upgrade for the Toyota Tundra TRD 1900 or Aftermarket 1900 Supercharged variants. 

• Supercharger intake manifold including twin intercoolers
• Harrop TVS2650 FDFI Supercharger with RH inlet cover – Toyota throttle bolt pattern
• 8PK FEAD idler bracket, Coolant cross-over pipe, 8PK Supercharger drive belt
• Replacement high flow injectors for Stage 2
• Replacement high flow fuel pump for Stage 1 & 2
• Plug-in wiring looms for all necessary engine sensors – IAT breakout from MAF sensor, Throttle loom extension and Intercooler pump loom
• Front-mount intercooler radiator, Electric Intercooler pump, Coolant Reservoir and moulded hoses
• Interfaces with OE TB, Air-box and FEAD
• Retains all factory ancillaries including A/C, Viscous engine fan and Power Steering
• Fuel-rail option includes additional machined injector bosses in the manifold, fuel-rails and mount brackets.
• Kit is Hardware kit only and does not include a calibration.
• Stage 1 factory calibration available - refer Tech Guide for more information.

With nearly every 3UR engine we build, we start with brand new OEM timing components (not aftermarket knockoffs), including all 4 timing chains, tensioners, guides, O-rings, etc. Although the old installed parts might be "just fine," we're already in the engine and it's not worth risking it!

We try to keep a kit on the shelf. But it might take ~2 weeks for us to get all of the parts together.

Please contact us for availability on your specific needs, so you can plan your build accordingly! Expected wait time is typically 6-8 weeks or longer

Our custom built 3UR engines with oversized bore (looking for 6.8 liters?!) are typically made by JE. We have these custom made to spec, and if you have a specific idea in mind for bore size and options, we can make it a reality!

JE Pistons opened its doors for business in 1947 with one simple objective, to supply the racing community with the highest quality pistons and components available in the marketplace. Although times, people and equipment have changed, their objectives and goals have remained constant. Today, JE is the largest manufacturer of custom forged racing pistons in the world. Offering the shortest lead times in the industry and a 98% order fill rate, JE is the definitive source for all of your high performance needs.

The JE complex encompasses the most modern performance piston manufacturing equipment in the industry. JE’s implementation of the most advanced CNC machining technologies available, emphasizes their commitment to deliver the highest quality pistons, pins, rings and components available today. Industry leading processes like Ultra Crown®‚ a digital three-dimensional piston crown machining process, and Ultra Groove®‚ a machining operation that provides unprecedented flatness of ring grooves (tolerances to within millionths of an inch), are some examples of that commitment.

JE designs are specifically engineered for extreme applications up to, and including, professional competition. In this environment, the higher compression ratios, highest boost or heavy nitrous usage necessitate the higher tensile strength 2618 aluminum alloy. Features: Dome/Dish requires no deburring or preparation and feature smooth flowing radii for excellent flame travel. Pin fitting, wire locks, and rings included

Does NOT require a ring gear! Bolt up your factory flex plate! Uses any off the shelf Z32 Nissan 300ZX TT single disc clutch! Made in the USA!

As we break into the new era of UR engines, we have begun development on 6 speed manual swap options. Our flywheel for this conversion bolts to your factory flex plate. Fits the Nissan 6 speed from the 350Z, 370Z, G35, and G37 (commonly referred to as the CD009) as well as our T56 adapter face plate. We are able to keep costs down of this custom billet part by reusing the factory flexplate for a ring gear, instead of supplying an aftermarket one that does not work any better than the factory parts do. This is specifically made to fit our adapter plate only, and is required to finish the swap.

Please note the 1UR-FSE and 1UR-FE 4.6 Toyota/Lexus car and engines use a different flywheel than the 3UR 5.7 truck engine

Quick version of what you'll need:

• T56 style throw out bearing
• Pilot bushing adapter (included with transmission adapter)
• Nissan 6 speed
• Our flywheel (no other ones will work)
• 300ZX TT clutch
• 3UR serviceable bellhousing with 12 bolt trans flange

We've seen some of these get a bit weak in operation over time. Some have reported hearing a clunking at idle at higher mileage, which could be the culprit. They can be tested with compressed air to see if they're working properly, and if it isnt, typically it's best to replace it altogether. Both intake cam gears are the same, driven by oil pressure, but are clearly different from the exhaust side.

Pictures show a used one we pulled off an engine, but you will get a brand new one. This is for (1) single one, if you need both, you will need to add 2 to your cart.

If you're getting that diesel rattle noise, one or both may need to be replaced. They can be checked with compressed air fairly quickly, which is detailed in the factory service manual. If you're rebuilding your engine, you may want to consider replacing them regardless. 

Fits all 2007-2022 3UR and 1URFE truck engines, including Tundra, Sequoia, Land Cruiser, and Lexus LX570 and GX460. The part number has been superseded a few times, but these are completely interchangeable with 13050-0S020, 13050-38040, and 13050-38010.

We've seen some of these get a bit weak in operation over time. Some have reported hearing a clunking at idle at higher mileage, which could be the culprit. Both exhaust cam gears are the same, driven by oil pressure, but are clearly different from the intake side.

This is for (1) single one, if you need both, you will need to add 2 to your cart.

If you're looking for a truly top to bottom full fresh rebuild, dont forget to replace these as well. 

Fits all 2007-2022 3UR and 1URFE truck engines, including Tundra, Sequoia, Land Cruiser, and Lexus LX570 and GX460. Previous part numbers have been superseded to this new part number: 13080-38020 and 13080-38021

For anyone looking to build the absolute best possible 3UR with the pinnacle of offerings, XAT and Carillo have you covered! Spec'd out for 1000+ HP build, these rods with the right hardware will hold up to almost anything you can throw at them.

Please keep in mind these are strictly custom made to order and typically take 6-8 weeks.

Made in the USA! Nobody else makes these. So why wouldn't we?? XAT now offers billet main caps for the latest Toyota V8s! If you're looking to build the baddest UR on the planet, look no further. Whether you're building a VIP LS, a quick GS, a rock crawling GX, or a beastly Tundra, Land Cruiser, or Sequoia, we can help build and assemble your motor for you to handle however much power you are aiming for! We've installed these on a few built engines now, and we're looking forward to continuing that trend!

Keep in mind, as with all main cap replacements, you will need to have your engine line bored after installing these.

Full bearing kit to rebuild your big block Toyota! ACL does not currently make a thrust washer for the 3UR, so we have been using OEM ones for in house and customer engine builds. 

Includes rod bearings, main bearings, and thrust washers.

There are 4 separate main chain tensioner guides on the 5.7 liter 3UR. These are not interchangeable with each other, and each one is different. We replace these with every 3UR engine build regardless of what they look like, and exclusively use genuine Toyota parts only.

Sometimes these will get damaged, and sometimes you only need a few. We're offering these individually to help suit your engine build needs!

There are 2 separate main timing chains on the 5.7 liter 3UR. Unlike the chain tensioners, these are completely interchangeable with each other, left to right bank. We replace these with every 3UR engine build regardless of what they look like, and exclusively use genuine Toyota parts only. This listing is for one chain.

Sometimes these will get damaged, and sometimes you only need a few individual parts. We're offering these timing parts to help suit your engine build needs!

At long last, aftermarket rods are available for these massive Toyota engines! BC calls these their PRO-H rods (H-beam), and they come in 2 flavors.

For most builds, the 2k version is all that's needed. The ProH2K is rated in excess of 1400 HP and priced for the everyday performance enthusiast who isn't going to the moon, using ARP2000 rod bolts.

Anyone looking to pump it up to the next level would want to opt for the ProH625+ version, which uses Custom Age 625+ fasteners instead of the ARP2000s. They cost a bit more, but they're rated at 2000 HP and should be able to handle anything you can throw at them!

These cams are for anyone looking to get the most out of their Tundra, Sequoia, LX570, GX460, Land Cruiser, etc. with the 3URFE, 3URFBE, or 1URFE engines. 

If you've already done basic mods like intake, exhaust, and tune, this is the logical next step for you to have some noticeable gains, however you can expect to need at least an upgraded valvetrain to run these.

Factory cams have a 236 duration. We pump that up to quite a bit more. You absolutely will need a retune with these cams

How much power can you make with these? Check out what our customer made with an XAT fully built engine using a Whipple supercharger and our XAT cams!

Select your specific UR engine application from the dropdown menu!

For those that need more electricity than the stock alternator can provide, we have teamed up with JS Alternators to offer these custom made to order options! Even better, theyre plug and play, no adapter wiring needed!

JS Alternators also requires their universal Big 3 wiring kit, or otherwise similar wiring upgrades in addition to the factory wiring in order to handle the higher output. The big 3 Wiring upgrade is an ADDITION to your factory wiring.
All factory connections need to remain connected. For protection, it is recommended to add an in line fuse to the positive wire. All grounds must be cleaned to bare metal and properly secured.

Big 3 wires are 1/0 gauge pure copper cables. 1 positive to connect from the positive stud on the alternator to the positive battery terminal. Other 2 ground wires go from the alternator mount bolt to frame/chassis, and negative on the battery to frame/chassis.

Most JS Alternators are custom built to order and typically take 5-15 business days to be built and shipped. All JS alternators have a lifetime warranty on labor, and 1 year warranty on parts.

Hairpin units are commonly called 6 phase. They produce more output at idle and are more efficient than a conventional alternator. JS Alternators hairpin units feature premium bearings to withstand high engine rpm and utilize dual plate rectifier with 12 heavy duty diodes for improved cooling. Hairpin Units are a more reliable alternator to withstand high heat, high demand for car audio, marine, and racing applications.

We have been offering these for a few years now with superb results! These are not simply overpriced regrinds of stock cams. There are machined from new billet cores with a proprietary material! 

These cams are for anyone looking to get the most out of their Tundra, Sequoia, LX570, GX460, Land Cruiser, etc. with the 3URFE, 3URFBE, or 1URFE engines. 

If you've already done basic mods like intake, exhaust, and tune, this is the logical next step for you to have some noticeable gains, however you can expect to need at least an upgraded valvetrain to run these. We cannot confirm fitment with the LS460 and GS460 car 1UR-FSE engines. DO NOT expect them to drop in without modifications. We DO make 1URFSE specific cams as well 

For the manufacturing process, we start with proprietary cast iron billets, CNC machine the lobes, and finish off with double heat treatment, 5160 induction hardening, and Tufftriding. 

Pictured is one set from the actual run of UR cams made!! We try to keep a set in stock, as these are low production numbers. Once they leave, there may be a few weeks wait time before we get more in. 

Specs for factory cams:
236 duration, 6.36 cam lift intake
236 duration, 6.27mm cam lift exhaust 

Cam specs for XAT SUPERCHARGED cams:
247 duration, 6.86mm cam lift intake
248 duration, 6.86mm cam lift exhaust

Cam specs for XAT RACE cams:
282 duration, 7.17 cam lift intake, 245 duration at .050"
286 duration, 7.17 cam lift exhaust, 247 duration at .050" 

With the factory rocker ratio, that's 10.76mm of valve lift with our race cams! As such, you should verify clearance with your pistons and these cams. In most cases, you may need custom pistons.

How much power can you make with these? Check out what our customer made with an XAT fully built engine using a Whipple supercharger and our XAT cams!

full cam card specs: https://xatracing.com/xat-camshaft-cam-card-details 

Looking to upgrade your rig with new headers? Maybe doing a UR engine swap and need to fit a custom set? Or perhaps youre looking to add a turbo or two to your Toyota 5.7 or 4.6 truck V8? In any case, we have you covered! These are 3/8" thick stainless steel.

As is typical from us, another first to market product! Price is for both, 1 pair for 1 engine!

These likely fit other UR engines as well, however we have not yet confirmed fitment. They might fit 1URFSE and 2URGSE heads, but we have not test fit on those engines yet. They are made specifically for 1URFE and 3URFE/3URFBE engines, as seen in the Tundra, Sequoia, GX460, Land Cruiser, LX570, and overseas LX460.

Made in the USA!

Working with one of the biggest names in the industry, XAT Racing has commissioned a set of valve springs and retainers made specifically for the 3UR 5.7 V8 from Toyota/Lexus! These arent simply reused springs from a different application, these springs are purpose built to drop in to your 3UR-FE and 3UR-FBE engine. These will fit all 3URs as well, no matter if it is from a Tundra, Sequoia, Land Cruiser or LX570! Also fits 1URFE truck engines (GX460, etc.)

Dont forget to opt for the titanium retainers as well! Base price is for springs only.

These are not required when installing our exclusive in house billet cams, but are strongly recommended. We also strongly recommend opting for the titanium retainers to help reduce valvetrain weight and keep everything locked in. After all, you wouldnt want to go through the effort to upgrade the springs just to leave out the retainers, right? You could add them later...if you want to rip your engine back apart again..

BC has brought to market Stainless Steel intake and exhaust valve kits for the TOYOTA/LEXUS 3UR and 1UR engines. If you're building a high horsepower engine, these valves are a must for dealing with the intense heat that a supercharger or turbo will be adding to the combustion process. Swirl polished heads, hardened tips, and chrome plated stems ensure years of durability and performance from these valves. We offer these kits in standard size or +1mm oversized.

Standard Size kit will include 16x Intake valves at 38mm head size, 16x Exhaust valves at 32mm head size

Oversize kit will include  16x Intake valves at 39mm head size, 16x Exhaust valves at 33mm head size

These kits fit the TOYOTA/ LEXUS 5.7L 3UR  V8 engine, the TOYOTA/ LEXUS 4.6L 1UR-FE V8 engine found in the TUNDRA, SEQUOIA, GX460, LX570, LANDCRUISER 5.7 and 4.6L, and the LS460 Middle Eastern spec with the 1UR-FE engine.

XAT Racing has brought to market our Stainless Steel intake and exhaust valve kits for the TOYOTA/LEXUS 3UR and 1UR engines. If you're building a high horsepower engine, these valves are a must for dealing with the intense heat that a supercharger or turbo will be adding to the combustion process. Swirl polished heads, hardened tips, and chrome plated stems ensure years of durability and performance from these valves. We offer these kits in standard size or +.5mm oversized.

Standard Size kit will include 16x Intake valves at 38mm head size, 16x Exhaust valves at 32mm head size

Oversize kit will include  16x Intake valves at 38.5mm head size, 16x Exhaust valves at 32.5mm head size

These kits fit the TOYOTA/ LEXUS 5.7L 3UR  V8 engine, the TOYOTA/ LEXUS 4.6L 1UR-FE V8 engine found in the TUNDRA, SEQUOIA, GX460, LX570, LANDCRUISER 5.7 and 4.6L, and the LS460 Middle Eastern spec with the 1UR-FE engine.

Ever have an engine come apart at high RPM? Well, we haven't. At least, not due to rotating assembly vibrations. We've partnered with the biggest name in the industry yet again to release an 800+ HP capable harmonic balancer for all 3UR-FE and 3UR-FBE 5.7 liter "big block Toyota" engines (that includes Sequoia, Tundra, Land Cruiser, and LX570), and 1URFE truck engines (GX460, Sequoia, Tundra, overseas Land Cruiser). Made in the USA!

You will have to grind down the factory washer for clearance on the factory crank bolt for this to fit properly. We typically use a belt sander and hold it at a 45* angle to shave the OD. There is no other easy option for this

Please note this does not work with 6 rib belt 1UR engines. We are still working on a solution for the small block 4.6.

We now stock a special 7" overdrive diameter pulley for high boost applications with a supercharger! A larger pulley while keeping the included blower pulley the same size will spin the blower faster and make more boost. WE STRONGLY RECOMMEND NOT DOING THIS UNLESS YOU HAVE A BUILT ENGINE WITH AFTERMARKET RODS AND A SOLID TUNE. 

XAT Racing is now offering a UR engine torque plate for those that want to properly hone the cylinders on their Toyota/Lexus V8s. It fits all UR engines, even 3URs with Darton sleeves! Any serious engine builder will tell you that you need a torque plate in order to provide a similar stress pattern on the block that it experiences with the head on the block. Some builders even go as far as putting an old head gasket between the block and plate, then go through a standard Toyota pattern for torquing down the bolts/studs.

This is a precision machined torque plate, manufactured out of 2.0" (50.8mm) thick 6061 T6 aluminum (precision CNC'd by our own machine shop). Aluminum was chosen, as it best replicates stress and strain coefficients of expansion during torquing that the factory aluminum head does. It has an overbore that will allow for plenty of room for honing and boring as possible, so if you are building a setup with stock or slightly larger bore, you won't have an issue. It is shipped in a sturdy container for protection. These are quite possibly the only ones on the market anywhere, so instead of charging up to $800-plus for these units, we thought we would bring it to the market for a reasonable price!! You can expect one it to ship next day typically, as we have one on the shelf at all times! These are available for shipment outside the USA if required as well! Please email Andrew@XATRacing.com for a freight quote. A torque or honing plate is critical when doing the hone/bore process on any engine build, especially those that will be running a boosted setup and ARP head studs. Performance studs are typically torqued at much higher values than standard OEM studs, which causes a deflection in the cylinders if not using a torque plate.

Please note the $78 rental is for 1 week, which starts from the day you receive the plate, not the date it ships. If you need it longer, we will prorate the charge out of the refund for each week after. You may be better off purchasing it outright if you find your needs extend beyond 1-2 weeks. 

Made in the USA!

High performance ACL bearings for your big block Toyota V8! We use these with every engine build we do. One of the best names in the business

Forced pin oilers from the oil ring; Pin Fitted; Moly Coated Skirts; 3D Dome & Pockets; Pins, Locks all included!

Looking to upgrade your rig with new headers? Maybe doing a UR engine swap and need to fit a custom set? Or perhaps youre looking to add a turbo or two to your Toyota 5.7 or 4.6 truck V8? In any case, we have you covered! Genuine OEM Toyota gaskets

Price includes BOTH sides

This service includes modifying both heads, not just one side. You get a full pocket port job, 5 angle valve job, cylinder head inspection, and the heads get hot tanked for a proper cleaning. We offer this service for all UR engines. Regardless of what chassis your engine is out of, we service them all! LS460, LS600h, LC500, LX570, GX460, Land Cruiser, Tundra, Sequoia, etc.

Please keep in mind that your heads will likely require extra work: heads will typically need to be decked, and you may need other parts replaced such as valve guides. We will keep in touch with you during this process and let you know what your setup needs.

You cannot define every possibility in a single description or for all applications, but 'generally' speaking, what we provide with our Street Cylinder Head Refresh package is great for up to 7,000+ RPM, more RPM would be possible with proper optional valve train.

XAT has teamed up with Manley Performance and BC to provide and develop top level valvetrain parts to build with. Includes brand new Ferrea valve locks as well!

In reality, no matter what purpose/intended use of your build, you will benefit! The truth is unless you are building a 1300HP+ drag car, you can pretty much eliminate any serious deep cylinder head porting. You simply do not gain enough volumetric efficiency by hogging out a ton of metal in the heads, unless you are running a silly-high lift custom cam.

If you live outside of the USA, NO PROBLEM! Please contact us for a shipping quote and we will be happy to help you out! PRICE DOES NOT INCLUDE SHIPPING TO OR FROM US

All Victory injectors start out as Bosch cores. They are then sized and matched within 1-2% providing exceptional idle quality. All injectors come with a limited 2 year warranty. You will also receive 1 free cleaning within the first 2 years! All injectors are a top feed high impedance injector and a direct drop in on the 1UR, 2UR, and 3UR engines. 

Make sure you select your size from the drop down menu! Price is for a full set of 8. Please keep in mind that you will need to custom make connectors to fit the stock harness because of how tight of a fit it is. We include pigtail wiring for you to do so.

Also fit direct injection FSE heads, however these only replace the port injectors. You keep the factory direct injectors. Tuning is absolutely required when installing these.

870cc, 980cc, and 1200cc injectors use EV1 connectors. All are included with injector purchase

Why isn't everyone running a 3UR?! After tearing one down and analyzing the engine top to bottom, we've really come to appreciate the level of engineering that has gone into these engines. It's no wonder they were made for over 15 years! We feel they're extremely underrated, and they also respond especially well to supercharging.

XAT has been building 5.7 liter Tundra, Sequoia, Land Cruiser, and LX570 i-Force V8s and developing new parts for years for customers worldwide. We pride ourselves with taking the time to correctly assemble and rebuild every engine, knowing them inside and out. We also are excited to build more and more of these for boost, as our daily driven Whipple supercharged Tundra has become an entirely different beast with forced induction.

Every engine gets hand built to order. Not everyone has the same goals or budget in mind, so we have built everything from mild to wild, including an all out 6.8 liter bored and stroked version!

You will need to send us your engine, or you can use one of our supplied cores. We have a few in stock!

Our "base" engine build handles 800 HP reliably, but we do have a variety of options that you should also consider. If you're not sure if you want them, keep in mind that it's much easier to spend a few extra bucks while we have it and it's apart, than it is to go back in later and add these parts!

Base build includes fully assembled engine, ready to drop in:

• BC ARP2000 rods
• Manley pistons, 10.0:1 compression ratio
• Full OEM new engine gasket kit
• All new timing parts (chain, guides, tensioners, etc.)
• ACL rod/main bearings, OEM thrust washer
• Block honing with torque plate
• Hot tanked engine
• XAT modified high performance oil pump
• Ported intake/exhaust ports
• Valve job
• ARP head studs
• ARP main studs
• Heads bolted to block, timing set
• New valve stem seals

Every engine shipping from us also gets crated in ISPM 15 certified wood crates for international shipment. Your investment needs to be protected, and this is included in the build price

Shipping is not included, you will need to reach out to us with your location and we can get shipping quotes to your address! Ask us about additional "white glove" service options to really make your built engine stand out!

Quick version of what you will need:

• T56 style throw out bearing
• Our flywheel (no other ones will work)
• 300ZX TT clutch
• UR serviceable bellhousing with 12 bolt or 14 bolt trans flange
• Pilot bearing (included)
• T56 transmission

As we break into the new era of 1UR and 3UR engines, we have begun development on 6 speed manual swap options. We've developed an adapter plate specific for the UR automatic bellhousings to convert to a manual transmission, in this case the popular Tremec T56 Magnum! This specific plate works on all UR engines, however you will need the matching bellhousing that has the 12 or 14 bolt bellhousing-to-trans-case pattern. The only 1UR bellhousing this does not bolt to is the Land Cruiser/LX460 200 series 1UR-FE with the same 14 bolt pattern as the 3UR engines.

This billet aluminum adapter plate reuses your automatic UR bellhousing. Not all UR engines had a replaceable bellhousing, so you may need to source one from a GX460 or other Toyota/Lexus URs for instance. 

Our flywheel for T56 transmission applications uses the same one as our UR-to-Nissan 6 speed (commonly referred to as the CD009). You will need our in house flywheel, which bolts to your factory flex plate. We are able to keep costs down of this custom billet part by reusing the factory flexplate for a ring gear, instead of supplying an aftermarket one that does not work any better than the factory parts do. T56 transmission not included.

Please note the 1UR-FSE and 1UR-FE 4.6 engines uses a different flywheel than the 3UR-FE and 3UR-FBE 5.7 truck engine. You will reuse your factory flex plate for the ring gear and factory starter engagement.

The T56 style throw out bearing is also used with these kits. These are relatively inexpensive, which helps keep swap-cost down. We also offer a Quarter Master TOB as an option for a higher quality long term investment. 

Twin disc/multi plate clutches will require the use of the QM TOB, it is not optional on the 7.25" and 8.5" twin disc clutches we offer. The QM TOB also requires a Tilton quill tube (input shaft sleeve), which is included as well as the bleed line that is needed if the QM TOB option is selected. Made in the USA!

Looking for a clutch for this adapter plate? 

Click here for the piston ring installation document

We do typically keep a set on the shelf! Let us know how much HP you're running, what compression ratio you are aiming for, if you're boosted or not, and any other pertinent mods. Pictured is an actual piston from a full set we had custom made for our customer.

You will receive all 8 pistons along with the needed rings, wrist pins, and pin locks.

Manley 3UR pistons come standard with anti-friction moly coated side skirts (something we recommend for all pistons anyways), high performance chrome piston rings, and the pin locks.

• 2618 high strength material
• Offset wrist pin for quiet start-ups
• .210" wall Premium Chrome Moly pin (Standard Series) or 9310 alloy .210" wall pin (Extreme Duty Series) included
• Pressure balance groove
• Premium Steel top rings and round wire locks included
• Recommended piston clearance .0035" measured .850" from the bottom of the oil ring