Malossi 63 Bolt 14 H20 Tech 4 - Stroke Cylinder-piston kit

MALOSSI H20 I-Tech Cylinder Kit — Manufacturer reference 3117968. Designed for competition preparations on small displacements, this thermal kit provides a robust engine base thanks to high-level materials and machining. Ideal for urban, cross, and roadster environments when a custom bore is sought for circuit and competition use only.

TECHNICAL SPECIFICATIONS

Cylinder

• Bore: Ø 63 mm — Stroke: 58.7 mm — Displacement: 183 cm³
• Compression ratio: 11.27
• Material: primary aluminum alloy rich in silicon, tempered and annealed
• Liner treated with silicon carbides in galvanic nickel matrix, diamond cross-finish
• High-precision CNC machining; cylinder-piston couplings tolerance 0.05 mm

Piston

• Extra compact three-segment, high silicon content aluminum alloy, tin-treated walls
• Lightweight and reinforced design, optimized heat exchange surfaces

Segments

• 1st segment: nitrided and chrome-plated steel
• 2nd segment: special cast iron
• Wiper ring: three-piece special steel, chrome-plated

Compatibility and installation: to be installed exclusively with compatible Force Master housing (e.g. 5518172, 5519751, 5519888, 5519448, 5519527, 5519747) depending on the model. Check manufacturer references before installation. Products are exclusively reserved for competitions in designated areas; inappropriate use is not covered by the manufacturer.

Manufacturer ref: 3117968