Engines & Engine Parts

Welcome to your headquarters for horsepower—the place to get everything you need to build real power and performance! We’ve got competition-proven crate engines, performance-matched...

Welcome to your headquarters for horsepower—the place to get everything you need to build real power and performance! We’ve got competition-proven crate engines, performance-matched top end kits, and complete rotating assemblies from the biggest names in the industry. You can add a set of high-flow cylinder heads to your powerplant, upgrade your valvetrain, improve your oiling system, or drop in a new set of pistons. We also have a complete selection of crankshafts, connecting rods, harmonic balancers, pulleys, and engine brackets. We even have everything you need to restore the horsepower that time has stolen from your...

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Results 1 - 25 of 63

Pro-X Racing Parts Piston Kits for 2009-2011 400 EXC, 2010-2012 FE390 - 01.6439.C

ProX Piston Kit KTM400EXC '09-11/Husa FE390 '10-12 (94.96mm)

Part Number: PXR-01-6439-C

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Pro-X Racing Parts Piston Kits for 2009-2011 400 EXC, 2010-2012 FE390 - 01.6439.A

ProX Piston Kit KTM400EXC '09-11/Husa FE390 '10-12 (94.94mm)

Part Number: PXR-01-6439-A

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Pro-X Racing Parts Piston Kits for 2009-2011 400 EXC, 2010-2012 FE390 - 01.6439.B

ProX Piston Kit KTM400EXC '09-11/Husa FE390 '10-12 (94.95mm)

Part Number: PXR-01-6439-B

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.100280

Valve Shims, 2.80mm Thickness, 10.00mm Diameter, Beta, Husaberg, KTM, Set of 5

Part Number: PXR-29-100280

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Pro-X Racing Parts Wheel Bearings 23.S114002

Powersports Drivetrain Bearings and Seals, Wheel Bearing, Steel, Beta, Gas Gas, Husaberg, Husqvarna, KTM, Set

Part Number: PXR-23-S114002

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.100252.5

ProX Valve Shim KTM 10.00 x 2.525 mm. (5 pcs.)

Part Number: PXR-29-100252-5

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.100227.5

ProX Valve Shim KTM 10.00 x 2.275 mm. (5 pcs.)

Part Number: PXR-29-100227-5

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Pro-X Racing Parts Cam Chains 31.6428

Powersports Timing Chains, Husaberg, Husqvarna, KTM, Each

Part Number: PXR-31-6428

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.100310

ProX Valve Shim KTM 10.00 x 3.10 mm. (5 pcs.)

Part Number: PXR-29-100310

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.100187.5

ProX Valve Shim KTM 10.00 x 1.875 mm. (5 pcs.)

Part Number: PXR-29-100187-5

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.100295

Valve Shims, 2.95mm Thickness, 10.00mm Diameter, Beta, Husaberg, KTM, Set of 5

Part Number: PXR-29-100295

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Wiseco Powersports Piston Wrist Pins S682

Piston Pin, Steel, Chrome, Tapered, 19.00mm x 45.00mm, Each

Part Number: WIS-S682

Not Yet Reviewed

Estimated Ship Date: May 4, 2026 if ordered today

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Estimated Ship Date: May 4, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.100230

Valve Shims, 2.30mm Thickness, 10.00mm Diameter, Beta, Husaberg, KTM, Set of 5

Part Number: PXR-29-100230

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.100290

Valve Shims, 2.90mm Thickness, 10.00mm Diameter, Beta, Husaberg, KTM, Set of 5

Part Number: PXR-29-100290

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.100275

Valve Shims, 2.75mm Thickness, 10.00mm Diameter, Beta, Husaberg, KTM, Set of 5

Part Number: PXR-29-100275

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.100320

Valve Shims, 3.20mm Thickness, 10.00mm Diameter, Beta, Husaberg, KTM, Set of 5

Part Number: PXR-29-100320

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.100205

Valve Shims, 2.05mm Thickness, 10.00mm Diameter, Beta, Husaberg, KTM, Set of 5

Part Number: PXR-29-100205

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.100257.5

ProX Valve Shim KTM 10.00 x 2.575 mm. (5 pcs.)

Part Number: PXR-29-100257-5

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.100307.5

ProX Valve Shim KTM 10.00 x 3.075 mm. (5 pcs.)

Part Number: PXR-29-100307-5

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.100200

ProX Valve Shim KTM 10.00 x 2.00 mm. (5 pcs.)

Part Number: PXR-29-100200

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.100185

Valve Shims, 1.85mm Thickness, 10.00mm Diameter, Beta, Husaberg, KTM, Set of 5

Part Number: PXR-29-100185

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.100297.5

ProX Valve Shim KTM 10.00 x 2.975 mm. (5 pcs.)

Part Number: PXR-29-100297-5

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.100242.5

ProX Valve Shim KTM 10.00 x 2.425 mm. (5 pcs.)

Part Number: PXR-29-100242-5

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.100195

Valve Shims, 1.95mm Thickness, 10.00mm Diameter, Beta, Husaberg, KTM, Set of 5

Part Number: PXR-29-100195

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Pro-X Racing Parts Oil Filters 54.63655

ProX Oilfilter KTM450/520/525SX-EXC '00-07 -Long- (1-Pce.)

Part Number: PXR-54-63655

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

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