Big Bore Forged Piston Kit 5.50Mm Over 69.5Mm Compatible With 1987-2006 Yamaha Banshee 350 Yfz350

OEM PART NUMBERS:
• Yamaha: 2GU-11636-00-00 / 2GU116360000

SPECIFICATIONS:
• Type: Piston Kit (5.50mm BIG BORE Oversize)
• Standard Bore: 64mm
• Big Bore: 69.5mm (5.50mm Over)
• Stroke: 54mm
• Displacement: 347cc (stock)
• Compression: 6.5:1
• Piston Type: Forged — MOS2 Skirt Coating
• Engine: Twin-Cylinder 2-Stroke Liquid-Cooled Reed Valve
• Horsepower: 34HP (stock)
• Weight: 2 lbs / Condition: New

KIT CONTENTS (Single Cylinder):
• (1) Forged Piston — 5.50mm BIG BORE 69.5mm
• (1) Ring Set / (1) Wrist Pin / (2) Circlips
• Twin-cylinder engine — order (2) kits for complete rebuild

BIG BORE SIZE CHART (Yamaha Banshee 350 YFZ350):
• 4.50mm Big Bore: 68.5mm (50-520-5-685)
• 5.50mm Big Bore: 69.5mm (50-520-5-695) — THIS KIT (MAXIMUM)

BIG BORE NOTE:
• This is the MAXIMUM BIG BORE kit — NOT a standard oversize
• Standard bore 64mm + 5.50mm = 69.5mm finished bore
• Requires aftermarket big bore cylinder sleeves bored to 69.5mm
• Stock cylinders cannot be bored this far

APPLICATIONS:
• Yamaha Banshee 350 YFZ350 347cc 2-Stroke Twin-Cyl (1987-2006)

PRODUCT NOTICE:
As a parts distributor we mostly sell aftermarket parts (any OEM parts would be noted as such). Aftermarket parts are not sourced from the original vehicle or equipment manufacturer, but are designed to function the same as - if not better than - the original. All parts sold are new.

WARNING - This product may expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov