KTM, GAS GAS, Husqvarna 480cc Big Bore Kit

This is a complete kit including everything needed to bolt on a BRAND NEW big bore cylinder for KTM, Husqvarna, and GAS GAS 450 models from 2016 to 2022. No Core Required!

  • Kit includes a New Geisick Performance cylinder, Custom JE 97mm Piston kit, and Cometic Head and base gaskets.

  • Custom designed JE piston is a light weight design, with 14.5:1 compression, and built in clearances for big valves, and big cams.

  • Cometic gasket kit includes head and base gaskets. (always check all clearances during assembly to ensure proper specs due to factory variances)

  • Utilizes Brand New cylinder, so no stock core cylinder is needed 

  • Designed with additional piston skirt support improving piston and cylinder wear

  • No case modification required

  • Better ring seal and less blow by equals more power

  • Excellent cooling characteristics for the most demanding racing situations

  • Great option to replace damaged stock cylinders

  • Crank Balancing to the piston is HIGHLY recommended.