Yamaha Banshee 1987–2006 67.95mm Big Bore Piston Kit for Athena Cylinder – S4C06800001A

Yamaha Banshee 1987–2006 67.95mm Big Bore Piston Kit (392cc) for Athena Cylinder – S4C06800001A Description 392cc Banshee power — the Athena S4C06800001A is a cast 67.95mm big bore piston kit designed exclusively for Athena Banshee big bore cylinders (1987–2006 YFZ350 Banshee). 4032 aluminum alloy, domed head, molybdenum-coated, CNC-machined to 0.01mm tolerance, and track-tested for extreme conditions — direct replacement for Athena big bore rebuilds.

What’s Included

• 67.95 mm Cast Piston – domed, molybdenum coated
• Piston Rings – low-tangential load, perfect seal
• Wrist Pin
• Circlips

Key Features

• 67.95 mm bore — matches Athena Banshee big bore cylinders
• 392 cc displacement (with Athena cylinder)
• 4032 aluminum alloy — high resistance to mechanical/thermal stress
• CNC precision — tolerances < 0.01 mm
• Molybdenum coating — reduced friction, longer life
• Domed head — stock compression ratio
• Made in Italy — dyno & track proven

Fitment

• 1987–2006 Yamaha YFZ350 Banshee (with Athena big bore cylinder only)

Warranty Info Backed by Athena limited warranty. Professional installation recommended. WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Price & SKU Retail Price: $134.95 SKU: 0910-1332 / S4C06800001A Weight: 0.65 lbs Availability: In Stock