Wiseco piston kit 47.50mm

Oversized piston kit for 1973-76 XR75 and 1977-78 XR75.  Available in 47.50mm 48.00mm 48.50mm and 49.00mm.  Std bore on 73-76 is 47.00mm and 48.00mm on 77-78.  This piston kit has a 10:1 compression ratio.