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MOOSE OFFROAD High-Performance 4-Stroke Race Piston Kit (97.00 mm) for Yamaha Upgrade your off-road 4-stroke race engine with the MOOSE OFFROAD High-Performance 4-Stroke Race Piston Kit—engineered for strength, stability, and long-lasting performance under extreme conditions. Key Features Fully boxed-style forged construction for maximum strength with reduced friction and improved durability, power, and weight efficiency. Full-radius dome design to maximize quench and help eliminate hot spots that can promote detonation. Internal bracing boosts durability while reducing friction in the pin assembly. Skirt coating (moly) helps reduce friction and heat for consistent operation. DLC wrist pin coating (Diamond-Like Carbon) for outstanding resistance to abrasive wear, extending service life and reliability. Complete kit included : piston, wrist pin, rings, and circlips. Made in the USA for quality you can trust. Specifications Product Name: Piston Kit Style: Race Units: Kit Engine Type: 4-Stroke Bore Size: 97.00 mm (Standard) Compression Ratio: 13.0:1 Piston Material: Forged aluminum alloy Skirt Coating: Moly coated Riding Style: Off-Road Weight: 0.96 lbs | Dimensions: 5.75" x 5.01" x 4"
Features fully boxed-style forging for ultimate strength, minimizing friction, durability, power, and weight reduction
Full radius dome designs maximize quench while eliminating hot spots that promote detonation
Internal bracing maximizes durability while decreasing friction in the pin assembly
Forgings come standard with skirt coating which reduces friction, which in turn reduces heat
Includes a DLC (Diamond-Like Carbon coating) wrist pin; this technology has been proven and used because of its high resistance to abrasive wear, which extends the service life and reliability under extreme conditions
Kit includes piston, wrist pin, rings, and circlips