Unlock the full potential of your 125cc powerplant with the L.A. Sleeve YA5470. This high-performance liner is the definitive solution for restoring your Yamaha YZ250's cylinder to better-than-new condition. Utilizing a specialized chrome-moly alloy, this sleeve offers an incredibly durable wear surface that withstands the high-revving demands of small-bore racing. The 54.00mm standard bore provides the perfect starting point for a fresh top-end, ensuring your engine delivers the crisp, snappy throttle response you expect.
Installation is straightforward thanks to an outside diameter that is precision centerless ground for a flawless interference fit. Every port is pre-machined to exact specifications, aligning perfectly with your engine's internal architecture to maintain optimal scavenge and exhaust timing. Because this sleeve is designed to be bored and honed to your specific piston after it is pressed in, you can achieve the ultra-tight clearances necessary for maximum compression. Get back to the front of the pack with the YA5470, available now at Cheetah’s Powersports.
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 54.00mm
- YA5470 Fits Cylinder No. 5NY
- 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.
