Current Stock: 10

Fits Models 99 -07
Specially designed and manufactured for Extreme Engines Limited. Kit includes set of 4 piston ring kits, 4 pins and 8 clips.
12.6:1 compression ratio 2mm overbore gives 1363cc

Exchanged bore and replated cylinders available if you wish to buy as a big bore kit.

EXT-00020 Hayabusa Ross Piston Kits - 83mm