Polini top end assemblies for 50cc can be used to recondition the cylinder kit with an identical reliability specification to the manufacturer's original equipment. They are fabricated from high-qua...
Replacement rings_ 260143, replacement gudgeon pin_ 032037, spare clips_ CP1612C, needle bearing cage_ 400405
PROX forged pistons are made from a specific aluminum alloy which lowers frictions and maximizes reliability.
Full kit cylinder Gas Gas Enduro Gas Gas cylinder Suitable for_ GasGas EC 250 R (1999-2019)GasGas EC 300 R (1999-2019) NI-CA-SIL treatment reduces friction and internal heat. Made of 100% high quali...
VERTEX piston for YAMAHA YZF250, WRF250 '01-07 Ø76,96mm, forged, high-compression, three-ring piston