Wiseco PK1391 Top End Kit (Racers Choice GP Style) - 2.00mm Oversize to 56.00mm

Bore: 56.00mm
Compression: Standard Compression
Sizing: 2.00mm Oversize

SPECIFICATIONS.
Displacement: 134cc.
Bore - Standard: 54.00mm.
Bore - Actual: 56.00mm.
Bore - Oversize: 2.00mm.
Stroke: 54.5mm.
Skirt Coating: ArmorGlide.
Treatment: Hard Coat Annodize.
Note: Racers Choice.
Note: GP Series.
Note: No Intake Window.
Note: Pinned on centerline.
ITEM CONTENTS.
2205CS - 56.00 mm Ring.
846M05600 - Yamaha YZ125 05-17 GP Series 2205CSA.
B1001 - Top End Bearing 15 x 19 x 17.3mm.
CW15 - ROUND WIRE PIN LOCKS 15MM (PAIR).
S668 - PistonPin 15 x 47mm ID NonChromed TW.
W6331 - TopEnd Gasket Kit Yamaha YZ125 05-17.

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:

2005-2021 Yamaha YZ125
2020-2022 Yamaha YZ125X