SLEEVE POL 550 F/C

Cylinder Sleeve For 2-Stroke

Engineered specifically for 2-Stroke high-RPM powersports applications

Scavenging, transfer, and exhaust ports come factory pre-profiled to preserve exact original manufacturer timing parameters

Centrifugally spun-cast Chrome-Moly Alloy (200 Brinell hardness) for superior heat dissipation and ring wear life

Supplied semi-finished; must be finish-bored and honed after installation to match the exact clearance specifications of the replacement piston

Inside diameter must be bored and honed to size piston after installation.

Type CI (Cast-In Liner): The original block has a permanent iron liner cast directly into the aluminum from the factory. The cylinder must be precisely bored out to accept the new sleeve, ensuring the original factory liner is not completely removed so it can serve as a supportive jacket for the new installation. For fan cooled engine.