Athena 2005-2021 Yamaha YZ 125 LC Factory 54mm Cylinder
Add displacement and power with this Athena performance cylinder. The 54mm bore increases your engine size for increased displacement. More cubic centimeters means more torque across the powerband. Feel the difference a bigger cylinder makes on the track or trail.
Athena casts this cylinder from high strength aluminum alloy for durability. The Nikasil bore coating provides excellent ring seal and wear resistance. Cooling fins are optimized for consistent operating temperatures. Port timing is designed for maximum performance in your application.
Your order includes the complete cylinder ready for installation. The bore is finished and ready for the matching piston and rings. Transfer and exhaust ports are fully machined from the factory. This is a direct replacement requiring no case modifications.
This cylinder fits the 2005-2021 Yamaha YZ 125 LC Factory 54mm. Matching piston kits are available and may be required for proper fitment. Verify all components match before assembly. Professional installation recommended for optimal results.
Athena cylinders are proven performers in racing and recreation. Get more power from your engine with Athena quality. Built to perform when you need it most.
📦 Shipping Information
In-Stock Items:
- Most parts ship next business day
- Modquad parts: Monday–Thursday dispatch
Made-to-Order Items:
- Custom swingarms & A-arms: 2–4 weeks
- EVP exhaust systems: 2–4 weeks
- Sneakers: 1–2 weeks
Stock Guarantee: Items marked "In Stock" ship immediately. Made-to-order items are built fresh for you.
Questions? Contact us—we respond within 24 hours.
