PISTON KIT 87-07 YFZ350 66.00, WISECO 513M06600RD350 82-90

Part no 56-W513+200_WI (oro2u.com)
YAMAHA YFZ 350 BANSHEE 1987-2007,
Yamaha RD350 LC - YPVS (1980-1987),
Yamaha RD350 AC (1950-2014),
YAMAHA RZ350 1982-1990,

Wiseco 66.00mm piston kit
Wiseco part no 513M06600