Athena Piston Kit (144cc Big Bore) (A) - 4.00mm Oversize to 57.94mm, 14.0:1 Compression - S4C05800001A

All pistons are forged using a precision heat-treatment process that allows for production tolerances of just .005mm
Forged piston kits are available in A, B and C sizing
Forged piston tooling allows for the lightest available product
Kits include antiwear coated piston, rings, pin and circlip
Made in Germany