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Designed for motocross and roadster enthusiasts seeking a reliable replacement part, this VERTEX cast piston fits the precise bore sizes of the listed 125 cm³ models. Made from aluminum, it features a B size for controlled oversizing and an optimized diameter for installation.
Piston Diameter: Ø 55.97 mm (oversize letter B)
Recommended Bore Diameter: 56.00 mm
Compression: standard
Material: Aluminum (cast piston)
This piston is suitable for the most common models: HUSQVARNA WR 125 (1990–1991) and CAGIVA VMX 125 (1991). It replaces the original part in engines requiring the B size and allows for replacement during a re-bore or engine maintenance.
Before installation, check the condition of the cylinder, rings, and seating surfaces, adhere to the manufacturer's tolerances, and follow the break-in procedures as per the engine specifications. This direct replacement part for restoration will help you breathe new life into your engine while maintaining originality.
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