Wiseco Top End Kit Standard Bore 77.00mm - 13.5:1 Compression - PK1922

Features:

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

Specifications:

• Bore - Standard: 77.00mm
• Compression Ratio - Actual: 13.5:1
• Skirt Coating: ArmorGlide

Item Contents:

• 40151M07700 - Yamaha '16-18 YZ250F 13.5:1 CR
• 7700YC - 77.00 mm Ring Set .8 x 1.5mm
• CW16 - 16mm Round Wire Locks - Set of Two
• Ring - Set
• S677 - PistonPin 16 x 40mm NonChromed TW
• W6929 - TopEnd Gasket Kit Yamaha YZ250F '14-18