Athena S4C05800001B Cast Piston for Yamaha 125 YZ (1997-2025) - Piston Size 57.95 mm Forged 2-Stroke Piston Replacement - Motocross Dirt Bikes snapback including a crotch strap

including a crotch strap

This genuine Topcon tripod replaces older models like the TP-210T and delivers professional-grade durability at an affordable price

high‑quality sealing solution for Yamaha YZ250 two‑stroke engines from 1997–1998

leak-free fit in the airbox

This tire is engineered to meet the rigorous demands of motocross riders

Athena S4C05800001B Cast Piston for Yamaha 125 YZ (1997-2025) - Piston Size 57.95 mm Forged 2-Stroke Piston Replacement - Motocross Dirt Bikes snapback including a crotch strapIf you're looking to unleash more low end torque, stronger mid range power, and overall improved performance from your Yamaha YZ125, the Athena S4C05800001B is the perfect choice. Engineered in Italy by one of the world's leading powersports manufacturers, this high quality cast piston kit is specifically designed to pair with Athena's Big Bore Cylinder Kits, reliably increasing your bike's displacement from 125cc. Whether you're a weekend trail