Wiseco PK1223 Top End Kit - 4.00mm Oversize to 77.00mm, 10.5:1 Compression

Bore: 77.00mm
Compression: 10.5:1 Compression
Sizing: 4.00mm Oversize

SPECIFICATIONS.
Displacement: 277cc.
Bore - Standard: 73.00mm.
Bore - Actual: 77.00mm.
Bore - Oversize: 4.00mm.
Stroke: 59.5mm.
Compression Ratio - Actual: 10.5:1.
Note: Cylinder boring required.
ITEM CONTENTS.
3032XC - 77.00 mm Ring Set.
4466M07700 - Honda XR250 86-04 10.5:1 CR 3032XC.
CW17 - ROUND WIRE PIN LOCKS 17MM (PAIR).
S523 - PistonPin 17mm x 2.429in. NonChromed TW.
W5425 - TopEnd Gasket Kit Honda XRL250 & XR250.

Contains all the necessary components for overboring or rebuilding your top end. Feature forged pistons, rings, wrist pins, circlips and top end gasket set.

Vehicle Fitment:

1986-2004 Honda XR250R