Vertex Piston Kits All piston skirts are coated with a hi-tech Molybdenum Disulphite coating for faster break-in time and increased piston life. Cast Piston kits are gravity cast aluminum alloy (not forged) with 18% silicone content, which produces an extremely light but very strong piston • Forged Replica pistons are forged from 2618 aluminum for superior strength and durability • Forged High Compression pistons improve power and torque across entire rpm range • Forged Replica pistons are forged OE replacements • All pistons are heat treated with a T-5 hardening and tempering cycle • Replica pistons and all rings are OEM replacements • Kits include piston, rings, wrist pin and circlips • Two stroke replacement rings are sold individually • Four-stroke piston rings sold as a set Piston Versions: • Cast Replica pistons – Cast OE replica piston • Cast BB – Big bore stock compression cast piston • Forged Replica pistons – Forged replacement for a OE cast piston for better strength • Forged Replica – Forged OE stock compression piston • Forged BB – Forged OE stock compression big bore piston • Forged Race – Unique forged GP style race piston with only one compression ring • Forged HC – Forged high compression pistons • Two stroke Race pistons – Unique cast GP style race piston with only one compression ring
CRF250R 22-2023, CRF450R 19-2023
Forged, Forged GP R.C., Forged Replica
11.7:1, 14.1:1, 13.5:1
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