Wiseco PK1041 Top End Kit (440cc Big Bore) - 4.00mm Oversize to 89.00mm, 11:1 Compression

Bore: 89.00mm
Compression: 11:1 Compression
Sizing: 4.00mm Oversize

SPECIFICATIONS.
Displacement: 435cc.
Bore - Standard: 85.00mm.
Bore - Actual: 89.00mm.
Bore - Oversize: 4.00mm.
Stroke: 70.00mm.
Cylinders: 1.
Compression Ratio - Actual: 11:1.
Note: Cylinder sleeving required.
ITEM CONTENTS.
3504XC - 89.00 mm Ring Set.
4667M08900 - Honda XR/TRX400EX/TRX400X 11:1 CR.
CW20 - ROUND WIRE PIN LOCKS 20MM (PAIR).
S553 - PistonPin 20mm x 2.185in. NonChromed TW.
W5942 - TopEnd Gskt Kit XR/TRX40096-05/99-08.

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