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Engine

$917.00 $687.75
Wrench Rabbit Complete Rebuild Kit In A Box Features: Vertex Piston (Standard Compression, Piston, Rings, Pin, and Clips Hot Rods Heavy Duty...

$528.00 $475.20
Wiseco Valve kit includes exhaust valves, intake valves , and center valves were applicable. The LTR450 and the YFZ450 come in Titanium. The 400ex, kfx400, ltz400 come in stainless steel.

$179.95 $158.36
OEM pressure are cast pieces with a very temporary life. Many racers have gone to the improved durability of a machined billet basket. Well, hereÂ’s the next level of performance and durability, the WPS machine-forged Pressure Plate by Wiseco

$292.00 $256.96
Forged from lightweight aero-space grade aluminum alloy ; CNC Machining ensures each identical to the next. Weight saving relief cuts on out side of clutch...

$368.00 $323.84
OEM inner hubs are cast pieces with a very temporary life. Many racers have gone to the improved durability of a machined billet basket. Well, hereÂ’s the...

$239.00 $179.25
Wiseco offers forged pistons that offer better performance than OEM at a reasonable price. Extensive engineering goes into each Wiseco ATV Piston to provide...

$88.89 $80.00
The Wiseco cam chain is made from the highest quality select steel alloys that are light, yet provide maximum strength.

$369.95
  TRX400EX Displacement - 440cc Bore size - 4.00" Compression ratio - 12.5:1 Cylinder sleeving required Kit Includes: Piston,...

$0.00
Winderosa Complete Gasket Sets include all gaskets necessary to rebuild the engine and transmission. The base and head gaskets are designed for OEM bore....

$989.00 $869.00
The z-Start Pro offers unique benefits as a high-end complement to Rekluse’s industry-leading z-Start Clutch. The z-Start Pro offers features which directly...

$399.00
Rekluse TORQ Drive Clutch Pack: A high performance manual clutch is now more accessible than ever with the TorqDrive Clutch Pack. It’s as easy...

$1,449.00 $1,280.00
RadiusCX 4.0 is the complete package of auto clutch functionality, improved power delivery, and upgraded durability. RadiusCX kits include Rekluse’s...

$1,249.00 $999.00
When you need the best, look no further. This top of the line auto clutch product brings together all of our latest technology into one package. A TorqDrive...

$949.00
RadiusX 4.0 – A high-performance, stall-preventing auto clutch is just a clutch pack swap away. RadiusX combines TorqDrive friction disk technology with...

$849.00
RadiusX – a high performance auto clutch is just a clutch pack swap away. RadiusX combines a TorqDrive clutch pack with our innovative EXP (auto clutch)...

$1,099.00
The best manual clutch available, period. Core Manual TorqDrive delivers unprecedented performance, tuning and durability. TorqDrive provides more disks in...

$998.75
Prevents Stalling Innovative EXP disk design incorporates updated wedge weights to prevent your machine from clutch related stalls. ...

$34.95 $30.76
PRO X Pressure Plates are precision machined from heat treated aircraft type aluminum alloy to O.E. precision standards. Sophisticated hard-anodizing...

$56.95 $50.12
PRO X Inner Clutch Hubs are precision machined from heat treated aircraft type aluminum alloy to O.E. precision standards. Sophisticated hard-anodising...

$37.29
Manufactured by the leading O.E.M. factory in Japan Die-cast parts are machined to O.E.M. specifications and tolerance for perfect fit Parts are a...

$249.00 $219.12
These clutch baskets are precision machined with today's most advanced - heat treated aircraft hardened aluminum alloy. The basket's specially designed teeth...

$29.95
In line temperature reducer increases cooling efficiency of any water cooled all terrain vehicle. The Pro Design Super Coolers Reduces cooling temperatures...
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$499.00
Oversized NASCAR styled radiator for your ATV o No other radiator like it on the planet! o Maintains cooler operating temperatures under the...

$429.95
Magnum TRX440EX Big Bore Kit  TRX440EX Steel Bore Cylinder kit Namura 440cc Big Bore Piston Kit Namura 440cc Gasket Kit....

$599.00
All new assembly Crankshafts sold complete with connecting rods, main bearings and inner crankshaft webs. Factory assembled and trued within .001 and ready for installation.O.E.M. Quality at an aftermarket price! (Blaster Kit Does Not Have Crank Bearings)

$149.00 $131.12
Magnum Clutch kits are race proven to meet the needs of today's off road racers.

$119.00 $107.10
    * Magnum/YBN cam chains are made to meet or exceed OEM standards. * ISO 9001 certified.

$259.95
400ex Big Bore Kit (All Years) Kit includeds all parts needed to turn your 400 into a fire breathing 440cc monster! Kit inlcudes a Magnum 440cc Piston...

$179.80 $161.82
Kibblewhite Kit Includes: 2 - Intake Valves 2 - Exhaust Valves 1 - Center Valve (Yamaha YFZ450 Only) Each valve is fully CNC machined to precise...

$229.95 $206.95
All Kibblewhite spring kits are the no-nonsense answer to hassle-free performance. Each kit use the highest quality materials machined to precise...

$0.00
K&S
K&S Engine Oil Seal Highlights: Direct OEM Replacements Cheaper than OEM

$251.00 $213.35

JE has a history of manufacturing the highest quality pistons and components that a professional engine builders, race teams, and high performance enthusiasts alike trust and rely on.


$0.00
With over 50 years of experience, JE pistons is the leader in high performance forged pistons. JE Pistons have built a reputation that the competition can...

$160.99
Hotcams Valve Spring Kit: Fits YFM660 Raptor 01-05 Required with Stage 3 Hotcam

$460.00 $377.20
  Stoker Cranks Hot Rods is proud  to offer the stroker ATV crankshaft line. They have developed six long-stroke applications for ATVs....

$137.22
Hot Rod Connecting Rods are precision double honed to assure cylindrical accuracy of less than 0.003mm

$430.00 $352.60
Hot Rods Crankshafts: Hot Rods Crankshafts are sold complete with the original proven Hot Rods Connecting Rods, top end bearings, and crankshaft...

$59.95 $56.35
Hot Rods is proud to introduce their line of precision , high quality , main bearings and seal kits, which are designed to support OEM or Hotrods crank line.

$89.95
  7.48mm Valve Shims Includes three 7.48mm OD shims in each size from 1.20mm to 3.50 in .05mm increments 9.48mm Valve Shims...

$349.95
*Out Of Stock* Mud Buster camshafts are selected to maximize torque at low RPM and small amounts of throttle opening for low speed riding...

$255.00 $209.10
What sets Hot Cams apart from other camshafts? - Convenience and engineering! Hot Cams is the first camshaft company to produce its own cores for the dirt...

$129.95
Hot Cam Installation Kit Includes: degree wheel dial indicator adjustable magnetic stand three positive stops (10mm, 12mm, 14mm...
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$1,095.00 $963.60
Hinson Slipper Clutch BTL (Black Torque Limiter) Features: Revolutionary slipper clutches used by factory race teams Precision machined...

$179.95 $158.36
The Hinson Racing pressure plate allows the clutch assembly to spin more true, creating less heat when disengaged. Made from T-6 alloy and Alkalized for 5...

$299.95 $263.96
The Hinson Racing Inner Clutch Hub is designed to help eliminate clutch chatter, spin more true, and create less heat in the clutch. All of these add up to a...

$200.00 $176.00
Hinson High Performance Clutch Kit Features: Includes fiber and steel clutch plates with springs. Can be use with O.E.M. baskets, inner hubs and...

$169.95 $149.56
The Hinson Racing clutch cover is made from T6 aluminum and the choice of many Factory Teams. This unit improves heat dissipation and is significantly...

$289.00 $254.32
Hinson Billet Clutch Baskets are machined from T-6 aluminum to aerospace tolerances and Alkalized for 5 times the wear resistance over stock. Allows more oil flow over the plates for better heat dissipation, improved performance, and longer clutch life.