Working out the right piston kit

Question

Accepted Answer

Always start with your bore size. Pistons come in several diameters, often marked with a letter or listed as oversize. Measure the cylinder or have it measured, and if it has been rebored, choose the matching oversize. Coated cylinders are usually not rebored, so they stay on the standard size. Also compare model, engine size and year, as pistons can differ within a single model. Always replace rings, pin and clips along with the piston and follow the break-in procedure.
Use the parts finder to find kits for your bike, or send us your details if you're unsure.

Piston Sets

Wiseco Piston Set Front & Rear HD Twin Cam96 131cu

Wiseco Piston Set HD TC 103 Rushmore (4.375 stroke) 3.875"

Wiseco Piston Set HD TC 103 Rushmore (4.375 stroke) 3.880"

Wiseco Piston Kit HD TC 103 Rushmore (4.375 stroke) 3.885"

Athena Piston KTM 400 EXC / 400 EXC RACING / 400 SX 2000-2007

Vertex Piston GasGas / Husqvarna / KTM 2023-2025

Vertex Piston GasGas / Husqvarna / KTM 2023-2025

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Piston Sets

Wiseco Piston Set Front & Rear HD Twin Cam96 131cu

Wiseco Piston Set HD TC 103 Rushmore (4.375 stroke) 3.875"

Wiseco Piston Set HD TC 103 Rushmore (4.375 stroke) 3.880"

Wiseco Piston Kit HD TC 103 Rushmore (4.375 stroke) 3.885"

Athena Piston KTM 400 EXC / 400 EXC RACING / 400 SX 2000-2007

Vertex Piston GasGas / Husqvarna / KTM 2023-2025

Vertex Piston GasGas / Husqvarna / KTM 2023-2025

Not sure whether it fits?

Recently viewed

What Riders Say

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