Derbi GPR 125 4 T [2009-2013] - H2O cylinder-piston kit - Ø67mm

Malossi H2O cylinder-piston kit with Ø 67 mm for Derbi GPR 125 4 T

The Malossi H2O cylinder-piston kit is designed for the Derbi GPR 125 4 T from 2009-2013. The cylinder has a bore of Ø 67 mm and is machined on high-precision CNC machines. The piston-cylinder fit is 0.05 mm and the compression ratio is 12:1.

Cylinders and heat transfer

• Bore: Ø 67 mm
• Compression ratio: 12:1
• Piston-cylinder fit: 0.05 mm
• Machining on high-precision CNC machines
• Newly calculated, extra large heat exchange surfaces

The cylinder is made of a high-silicon, refined and hardened aluminum alloy. Its inner liner has a silicon carbide coating on a galvanic nickel matrix. Cross-smoothing in two diamond steps ensures machining within very tight tolerances.

Pistons and piston rings

The weight-reduced and reinforced super-compact piston has three segments and extra-large heat exchange surfaces. It is made from a special aluminum-silicon alloy with low thermal expansion. A tin additive is used on the sliding surfaces. Piston machining is also done on CNC machines.

• First compression ring made of nitrided and chrome-plated steel
• Second piston ring made of special steel
• Three-piece oil scraper made of alloyed and chrome-plated special steel
• Special piston rings with extremely high mechanical strength

Vehicle assignment

Suitable for the Derbi GPR 125 4 T, built between 2009 and 2013.

Factual usage instructions

This product is intended exclusively for competitions at designated venues in accordance with the regulations of the relevant sports associations. No liability is assumed for improper use.