This performance kit is composed of 4 pistons, 4 piston rings sets and 4 GS800 liners
Renault Sport based design. Kit is composed Ø76.6mm pistons with piston rings and pins. High quality GS800 Ø76.6mm liners that can withstand up to 1.9 bar of pressure. The kit will up your engine displacement to 1419 CC like in the official Renault Sport 180HP GR.A engines.
The engine block doesn't need any modifications.