New old stock Wiseco Performance Piston kit for the 1985 Yamaha YZ125N.

Wiseco part number 521M05600 replaces 521PS, includes piston, ring set 2205CS, wrist pin, circlips, and installation instructions.

Standard bore 56.00 mm.

Fitment: 1985 Yamaha YZ125N.

Always confirm by part number and bore size.

Cross-reference references Wiseco521PS.

Yamaha YZ125, YZ125N, 1985 YZ125, Wiseco piston, forged piston, motocross, vintage Yamaha, 56 mm piston NOS parts.