This piston full kit is designed as an oversized replacement with a 0.50 bore size, measuring 74.50mm. It is engineered to meet or exceed OEM standards and serves as a direct replacement for specific Yamaha models, including the YBR250, XG250 Tricker, YFM25R Raptor 250, XT250 Serow, and YS250, covering model years from 2007 to 2018.

Features

• Oversized 0.50 piston kit with 74.50mm bore


• Meets or exceeds OEM quality standards


• Direct OEM replacement


• Easy to install; professional installation recommended if unsure

Specifications

• Bore Size: 74.50mm


• Oversize: 0.50

Cross-Reference OEM Part Numbers

• 1S41163110A0


• 4XV116030000


• 4XV116330000


• 904681206900


• 1S4-11631-10-A0


• 4XV-11603-00-00


• 4XV-11633-00-00


• 90468-12069-00

Vehicle Fitments

• YBR250 (2007–2011)


• XG250 Tricker (2008–2017)


• YFM25R Raptor 250 (2008–2013)


• XT250 Serow (2008–2018)


• YS250 (2014–2017)