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 129

aFe Magnum FLOW Pro 5R Air Filters 27-90203R

aFe Magnum FLOW Pro 5R Air Filters 27-90203R

Track Series Intake Replacement Air Filter w/ Pro 5R Media 4 IN F x (7-3/4 x 6-1/2) IN B x (5-3/4 x 3-3/4) IN T x 7 IN H

Part Number: AFE-27-90203R

Not Yet Reviewed

Estimated Ship Date: Feb 26, 2026 if ordered today

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Estimated Ship Date: Feb 26, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.890220

ProX Valve Shim KTM 8.90 x 2.20 mm. (5 pcs.)

Part Number: PXR-29-890220

Not Yet Reviewed

Estimated Ship Date: Feb 19, 2026 if ordered today

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Estimated Ship Date: Feb 19, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.748147.5

ProX Valve Shim 7.48 x 1.475 mm. (5 pcs.)

Part Number: PXR-29-748147-5

Not Yet Reviewed

Estimated Ship Date: Feb 18, 2026 if ordered today

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Estimated Ship Date: Feb 18, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.VSA890-2

ProX Valve Shim Assortment KTM 8.90 from 1.74 to 2.58

Part Number: PXR-29-VSA890-2

Not Yet Reviewed

Estimated Ship Date: Feb 18, 2026 if ordered today

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Estimated Ship Date: Feb 18, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.890230

ProX Valve Shim KTM 8.90 x 2.30 mm. (5 pcs.)

Part Number: PXR-29-890230

Not Yet Reviewed

Estimated Ship Date: Feb 19, 2026 if ordered today

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Estimated Ship Date: Feb 19, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.748145

Valve Shims, 1.45mm Thickness, 7.48mm Diameter, for use on Honda®, Gas Gas, Husqvarna, Kawasaki, Sherco, Suzuki, Yamaha, Set of 5

Part Number: PXR-29-748145

Not Yet Reviewed

Estimated Ship Date: Feb 19, 2026 if ordered today

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Estimated Ship Date: Feb 19, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.748155

Valve Shims, 1.55mm Thickness, 7.48mm Diameter, for use on Honda®, Gas Gas, Husqvarna, Kawasaki, Sherco, Suzuki, Yamaha, Set of 5

Part Number: PXR-29-748155

Not Yet Reviewed

Estimated Ship Date: Feb 19, 2026 if ordered today

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Estimated Ship Date: Feb 19, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.748165

ProX Valve Shim 7.48 x 1.65 mm. (5 pcs.)

Part Number: PXR-29-748165

Not Yet Reviewed

Estimated Ship Date: Feb 19, 2026 if ordered today

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Estimated Ship Date: Feb 19, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.748172.5

ProX Valve Shim 7.48 x 1.725 mm. (5 pcs.)

Part Number: PXR-29-748172-5

Not Yet Reviewed

Estimated Ship Date: Feb 19, 2026 if ordered today

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Estimated Ship Date: Feb 19, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.748192.5

Valve Shims, 1.93mm Thickness, 7.48mm Diameter, for use on Honda®, Gas Gas, Husqvarna, Kawasaki, Sherco, Suzuki, Yamaha, Set of 5

Part Number: PXR-29-748192-5

Not Yet Reviewed

Estimated Ship Date: Feb 19, 2026 if ordered today

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Estimated Ship Date: Feb 19, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.748212.5

ProX Valve Shim 7.48 x 2.125 mm. (5 pcs.)

Part Number: PXR-29-748212-5

Not Yet Reviewed

Estimated Ship Date: Feb 18, 2026 if ordered today

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Estimated Ship Date: Feb 18, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.748280

ProX Valve Shim 7.48 x 2.80 mm. (5 pcs.)

Part Number: PXR-29-748280

Not Yet Reviewed

Estimated Ship Date: Feb 18, 2026 if ordered today

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Estimated Ship Date: Feb 18, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.748285

ProX Valve Shim 7.48 x 2.85 mm. (5 pcs.)

Part Number: PXR-29-748285

Not Yet Reviewed

Estimated Ship Date: Feb 18, 2026 if ordered today

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Estimated Ship Date: Feb 18, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.748290

ProX Valve Shim 7.48 x 2.90 mm. (5 pcs.)

Part Number: PXR-29-748290

Not Yet Reviewed

Estimated Ship Date: Feb 18, 2026 if ordered today

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Estimated Ship Date: Feb 18, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.890202

ProX Valve Shim KTM 8.90 x 2.02 mm. (5 pcs.)

Part Number: PXR-29-890202

Not Yet Reviewed

Estimated Ship Date: Feb 18, 2026 if ordered today

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Estimated Ship Date: Feb 18, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.890224

ProX Valve Shim KTM 8.90 x 2.24 mm. (5 pcs.)

Part Number: PXR-29-890224

Not Yet Reviewed

Estimated Ship Date: Feb 18, 2026 if ordered today

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Estimated Ship Date: Feb 18, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.890226

ProX Valve Shim KTM 8.90 x 2.26 mm. (5 pcs.)

Part Number: PXR-29-890226

Not Yet Reviewed

Estimated Ship Date: Feb 18, 2026 if ordered today

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Estimated Ship Date: Feb 18, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.890232

ProX Valve Shim KTM 8.90 x 2.32 mm. (5 pcs.)

Part Number: PXR-29-890232

Not Yet Reviewed

Estimated Ship Date: Feb 18, 2026 if ordered today

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Estimated Ship Date: Feb 18, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.748140

Valve Shims, 1.40mm Thickness, 7.48mm Diameter, for use on Honda®, Gas Gas, Husqvarna, Kawasaki, Sherco, Suzuki, Yamaha, Set of 5

Part Number: PXR-29-748140

Not Yet Reviewed

Estimated Ship Date: Feb 18, 2026 if ordered today

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Estimated Ship Date: Feb 18, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.748150

Valve Shims, 1.50mm Thickness, 7.48mm Diameter, for use on Honda®, Gas Gas, Husqvarna, Kawasaki, Sherco, Suzuki, Yamaha, Set of 5

Part Number: PXR-29-748150

Not Yet Reviewed

Estimated Ship Date: Feb 18, 2026 if ordered today

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Estimated Ship Date: Feb 18, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.748152.5

Valve Shims, 1.53mm Thickness, 7.48mm Diameter, for use on Honda®, Gas Gas, Husqvarna, Kawasaki, Sherco, Suzuki, Yamaha, Set of 5

Part Number: PXR-29-748152-5

Not Yet Reviewed

Estimated Ship Date: Feb 18, 2026 if ordered today

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Estimated Ship Date: Feb 18, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.748160

ProX Valve Shim 7.48 x 1.60 mm. (5 pcs.)

Part Number: PXR-29-748160

Not Yet Reviewed

Estimated Ship Date: Feb 18, 2026 if ordered today

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Estimated Ship Date: Feb 18, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.748235

ProX Valve Shim 7.48 x 2.35 mm. (5 pcs.)

Part Number: PXR-29-748235

Not Yet Reviewed

Estimated Ship Date: Feb 18, 2026 if ordered today

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Estimated Ship Date: Feb 18, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.748240

ProX Valve Shim 7.48 x 2.40 mm. (5 pcs.)

Part Number: PXR-29-748240

Not Yet Reviewed

Estimated Ship Date: Feb 18, 2026 if ordered today

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Estimated Ship Date: Feb 18, 2026 if ordered today

Pro-X Racing Parts Valve Shims 29.748242.5

ProX Valve Shim 7.48 x 2.425 mm. (5 pcs.)

Part Number: PXR-29-748242-5

Not Yet Reviewed

Estimated Ship Date: Feb 18, 2026 if ordered today

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Estimated Ship Date: Feb 18, 2026 if ordered today

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