Part No. 56-K170.81.PIB
YAMAHA YZF250 2014 - 2016,,,,
YAMAHA WRFF250 2015 - 2017,,,,
ATHENA S4F08100005B BIG BORE PISTON KIT 276cc 81mm BORE [80.96mm]
by the system of multi-layer head gasket pads, the new Kit Athena is the ideal product to enhance the performances of Yamaha off-road bikes at a very competitive price.
Cross reference numbers ONLY. S4F08100005A Forged Piston 80,95,,,, S41316296 Rings,,,