PISTON KIT XR400 TRX400 85.00, WISECO 4606M08500 HONDA

Part No. 56-W4606+00A_WI (phoenixmotos.com)
Honda XR400R 1986-2004,
Honda TRX400EX/X 1999-1914,
Wiseco 85mm piston kit
(Wiseco part no 4606M08500)