Namura Top-End Rebuild Kit for Polaris Sportsman/Scrambler 850 - 86.93mm - NA-50012K 2005 Harley-Davidson FLSTFSE CVO Softail Fat Boy 1991 Yamaha RT180

1991 Yamaha RT180

2012 Polaris 800 RMK

(6) 8-32 x 3/8" Pan head bolts

1999-10 - Gz250

Namura Top-End Rebuild Kit for Polaris Sportsman/Scrambler 850 - 86.93mm - NA-50012K 2005 Harley-Davidson FLSTFSE CVO Softail Fat Boy 1991 Yamaha RT180Namura Technologies Top End Rebuild Kit Part Number: NA 50012K Piston Size: 86. 93mm 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