J.E. Pistons 379450 FSR Ultra Series Piston Kit - Standard Bore 93.00mm, 9.0:1 Compression bicycle-e-power-accessories-tires Rear pulley has a 40mm

Rear pulley has a 40mm

Do not exceed manufacturers tow ratings Maximum tongue weight of 175lbs

Heat resistant DUMAX drive belt increases strength 30% compared to OEM and other aftermarket belts

Yuasa Reference: 12N7-3B

J.E. Pistons 379450 FSR Ultra Series Piston Kit - Standard Bore 93.00mm, 9.0:1 Compression bicycle-e-power-accessories-tires Rear pulley has a 40mmBore: 93. 00mm Compression: 9. 0: 1 Compression Sizing: Standard Bore In house forging has allowed JE to develop proprietary Aligned Grain Flow Technology forging technology that directs the grain flow of the aluminum to flow around critical areas of the piston, increasing strength. Lateral gas ports channel combustion gases to the back of the top ring groove, which adds pressure behind the compression ring to keep it pushed against the cylinder,