TTS Performance have been the UK distributors for JE Powersport forged pistons for 20 years. As distributors we have had custom pistons made for various applications, these pistons are not in JE's catalogue. There was a definite need for oversize pistons for the Japanese 400cc fours so we had JE make 1mm oversize high compression pistons for the Kawasaki ZXR 400, this brings the capacity to 412cc and approximately 13:1 compression. Ideal for fast road or racing applications. These light weight forged pistons come complete with a 3 ring piston ring set, forged pin and wire clips.  Oversize head gaskets are supplied separately or the purchaser can modify the stock head gasket. The barrel requires re boring and honing to suit, new liners are not required.

We also have oversize piston kits for the  VFR400, CBR400, FZR400, GSXR400 you can purchase on other Ebay sales.

Delivery times may vary depending on stock levels - usually ship within 7-28 days from date of order