Namura Top-End Rebuild Kit for Polaris 300 Hawkeye / Sportsman - 78.70mm - NA-50013-4K 1990 Yamaha YZ490 1983 Honda CR480R

1983 Honda CR480R

Diamond-shaped sleeve

1998-1999 Arctic Cat 500/500  4x4

(1) Ring Set #9200XX

Without proper tuning

Namura Top-End Rebuild Kit for Polaris 300 Hawkeye / Sportsman - 78.70mm - NA-50013-4K 1990 Yamaha YZ490 1983 Honda CR480RNamura Technologies Top End Rebuild Kit A Top End rebuild can help to improve the performance of your ride, keeping it running in peak condition. With the Namura complete Top End Rebuild Kit, rebuilding your Top End no longer expensive and painful Namura's Top End Kits include everything you need to get your ride operational again; pistons, a top end gasket kit and wrist pin bearings (where applicable) are all included in this convenient, time saving