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

Generally ships to addresses in the contiguous United States the same business day if ordered by 12:15PM Central Time!

Bore: 57.94mm
Compression: 14.0:1 Compression
Sizing: 4.00mm Oversize

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.

Yamaha YZ125 1997-2018