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VERTEX Piston Kit Cast Replica for 2-Stroke (53.95 mm) Restore performance and reliability with the VERTEX piston kit cast replica designed as a cast OE replacement for select Gas Gas, Husqvarna, and KTM 2-stroke engines. Built for street, off-road, and dual-sport riding, this kit helps deliver smooth throttle response and dependable compression. Key Features Heat-treated T-5 cycle for strength, durability, and consistent performance. Molybdenum Disulphite (MoS2) skirt coating promotes faster break-in and increased piston life. Gravity-cast aluminum alloy (18% silicone content) for reliable wear characteristics. Cast OE replacement piston for accurate fitment and restoration. Complete kit included: piston, rings, wrist pin, and circlips. Specifications Product Type: Piston Kit (Units: Kit) Engine: 2-Stroke Piston Diameter: 53.95 mm Cylinder Diameter: 54.00 mm Displacement: 125 cc Compression Ratio: Standard Skirt Coating: Molybdenum Disulphite Piston Material: Aluminum Alloy (Cast) Upgrade or replace your worn piston assembly with the VERTEX cast replica kit for dependable 2-stroke power.
Piston is heat treated with a T-5 hardening and tempering cycle
Piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
Gravity-cast aluminum alloy (not forged) with 18% silicone content
Cast OE replacement piston
Kit includes piston, rings, wrist pin and circlips