PISTON KIT 88-07 YFS200 67.00, NAMURA NA-40002-4 YAMAHA ATV

Part No. 56-W573+100.NT (phoenixmotos.com)
YFS200 BLASTER 1988-2007 HI-COMP +1.00mm OVERSIZE PISTON KIT
(Namura part no NA-40002-4)