VertexWinderosa - Forged Replica Piston Kit (24109B) K-Type-Chain Guides 4” Because

4” Because

Inside the boots you’ll find OrthoLite® insoles ensuring all-day comfort on and off the bike

Generous reinforcement of the area impacted when shifting gears

kits for 1090/1190/1290/1050 are different because of the differences in the frames of those bikes

VertexWinderosa - Forged Replica Piston Kit (24109B) K-Type-Chain Guides 4” BecauseForged OE Replacement Piston Forged Replica pistons are forged OE replacements. Forged pistons are forged from 2618 aluminum for superior strength and durability. All piston skirts are coated with a high tech coating for faster break in time and increased piston life. All pistons are heat treated with a T 5 hardening and tempering cycle. Kits include piston, rings, wrist pin and circlips. Exact fit A, B, C or D pistons match your cylinder bore