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and impact resistance — ideal for motocross
Crafted with durability and functionality in mind
Milwaukee’s NAIL GUARD™ tooth pattern helps reduce tooth fracture and improve wear life
this guard offers a factory fit and rugged durability for motocross and enduro riders
Athena S4C05800001B Cast Piston for Yamaha 125 YZ (1997-2025) - Piston Size 57.95 mm Forged 2-Stroke Piston Replacement - Motocross Dirt Bikes motocross and impact resistance — idealIf 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