Kits are cast aluminum alloy (not forged) with an 18-20% silicone content, which produces a light but strong piston. Piston skirts are Bisulphide-coated for faster break-in time and increased piston life. All pistons are heat-treated with a T-5 hardening and tempering cycle Standard pistons and components are O.E.M. replacements Most Vertex pistons are made for standard size cylinder only, B, C, kit sizes are 0.01mm variations in the piston size to increase or decrease the clearance within the cylinder on standard ktm 300 exc 72.00mm bore size Kits include piston, ring, piston pin (wrist pin) and circlips Replacement rings are sold individually, please call 01487813755
Hardcore racing is known the world over for tuning engines with power and reliability, our sx65 tune is no exception, strong but smooth power with a much wider power band than stock. We no longer weld stock cylinder heads we use VHM cylinder heads.
Vforce 4R reed petal kit- Yamaha YZ65
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