Wiseco 431M07000 Piston Kit Standard Bore 69.95mm 2-Stroke For Sale - New and Used

Wiseco Piston Kit – Standard Bore 69.95mm (2-Stroke)

This listing is for one piston with rings and circlips. Depending on your application, you may need two pistons.

Key Features

• Forged from high-silicon, low-expansion aluminum alloy for superior strength, reduced weight, improved heat transfer, and longer service life
• Diamond-turned finish produced on CNC computer-controlled turning centers for a perfect finish with no size variation
• Dedicated forgings and additional lightening operations allow for an optimized strength-to-weight ratio
• Designed and built for each specific 2-stroke powersports engine
• Engineered, forged, and machined in Mentor, OH
• Improved tensile strength of forged material optimizes strength and service 248cc
• Bore (Standard): 70.00mm
• Bore (Actual): 70.00mm
• Bore (Oversize): STD
• Stroke: 64.4mm
• Sizing: Standard Bore (69.95mm)
• Note: Chrome Bore – 2756 CDM rings required for chrome cylinders

Kit Contents

• 2756CD – 70.00mm Ring Set (included; CD rings, not CDM)
• CW18 – Round Wire Pin Locks 18mm (pair)
• S343 – Piston Pin 18mm x 2.362 in., Non-Chromed

Note: This piston comes with CD rings. If you have a chrome cylinder, CDM rings (2756 CDM) must be purchased separately. Wiseco rings, clips, and wrist pins only fit Wiseco pistons; ring types do not interchange (e.g., a CD ring is not interchangeable with a TD ring).

Fits the following:

• Honda ATC250R: 1981-1984
• Honda CR250R: 1978-1980

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