Restore the legendary hit of your 2003 Yamaha YZ125 with the L.A. Sleeve Two-Stroke Cylinder Sleeve (YA5487). This chrome-moly alloy liner provides a stable, wear-resistant surface that handles the heat of competitive racing better than stock coatings. The precision centerless ground exterior guarantees an exact fit into your cylinder casting, while the precisely shaped ports ensure your intake and exhaust timing remain perfectly synced for immediate throttle response. Arriving with a 54mm standard bore, this sleeve is ready for a custom bore and hone to your specific piston, creating the airtight seal needed for maximum compression. Pick up this essential rebuild component at Cheetah’s Powersports and keep your Yamaha at full tilt.
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 54mm
- Fits cylinder # 5UN
- 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.
