Wiseco PK1037 Top End Kit - 0.50mm Oversize to 85.50mm, 11:1 High Compression

Bore: 85.50mm
Compression: 11:1 High Compression
Sizing: 0.50mm Oversize

SPECIFICATIONS.
Displacement: 402cc.
Bore - Standard: 85.00mm.
Bore - Actual: 85.50mm.
Bore - Oversize: 0.50mm.
Stroke: 70.00mm.
Cylinders: 1.
Compression Ratio - Actual: 11:1.
Note: Cylinder boring required.
ITEM CONTENTS.
4628M08550 - Honda XR/TRX400EX/TRX400X 11:1 CR.
8550XX - 85.50MM RING SET.
CW20 - ROUND WIRE PIN LOCKS 20MM (PAIR).
Gasket.
Gasket Kit.
S520 - PistonPin 20mm x 2.362in. NonChromed TW.
W5514 - TopEndGsktKit XR/TRX400 96-05/99-08.

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:

1999-2008 Honda TRX400EX Sportrax
2009 Honda TRX400X
2012-2014 Honda TRX400X
1996-2004 Honda XR400R