Revive your Yamaha’s legendary powerband with the L.A. Sleeve YA5377, a high-performance two-stroke liner specifically crafted for the YZ250. Built from a resilient chrome-moly alloy, this sleeve provides a superior friction surface that outlasts OEM plating, making it the premier choice for riders who demand consistent compression and heat management. The 66.40mm standard bore serves as a rock-solid foundation, ensuring your motocross engine maintains its competitive edge.
Efficiency meets accuracy with this sleeve’s precision centerless ground exterior, allowing for a seamless press-fit into your cylinder. Every port is pre-cut to exact factory dimensions, guaranteeing perfect timing and airflow without the need for manual grinding. Once installed, the inner diameter is ready to be bored and honed to your specific piston for a custom-tailored fit. Experience the difference in throttle response and durability, order your YZ250 sleeve from Cheetah’s Powersports today.
Features:
- Cylinder sleeve made from chrome-moly alloy
- Outside diameter precision centerless ground
- Ports cut to precision dimensions and shapes for ease of installation and port match-up
- Inside diameter must be bored and honed to size piston after installation
- Standard Bore Size 66.40mm
- YA5377 Fits Cylinders No. 5CU - 5MW - 5UP - BF1
- Original cylinder bore is alloy-chrome plated, Nikasil, or electrofused.
- The cylinder must be bored to accept the new cylinder sleeve.
- For liquid cooled engine.
- Inside diameter must be bored and honed to size piston after installation.
- Product images may only represent the class of product and not the specific model.
