Everything you need to make your Scooter get up and move.  290ccs of racing cylinder and 3 performance maps for your Yamaha 250. Long, low and fast. M3114268

The new complete cylinder equipped with CDI for many Yamaha 250 4-stroke LC engines was born!

Force Master is the innovative CDI which allows to change the injection in order to fit perfectly the new Malossi 4-stroke cylinder kit.

This CDI has been scheduled with 3 different maps so as to be coupled perfectly with your vehicle whatever its setting is!

TECHNICAL FEATURES

Cylinder

Bore: Ø 74 mm; Stroke: 66.8 mm; Displacement: 287.29 cc; Compression ratio: 1:11
Material: primary aluminium alloy with a high content of hardened and tempered silicon, cylinder liner with silicon carbide coating in a galvanic nickel die and crossed smoothing with two diamond passages with very limited tolerances
Machining: on machine tools with high precision numerical control
Cylinder-piston connection with an allowance of 0.05 mm
Recalculated and upgraded heat exchange surfaces

Piston

Ultra compact with 3 rings
Material: special aluminium alloy with high silicon content, low thermal expansion and a tin facing on the sliding surfaces
Machining on machine tools with numerical control
Lightened and reinforced
Upgraded heat exchange surfaces

Piston rings

Special rings with high sliding ease and very high mechanical resistance
I° ring compression in nitrided and chromium steel
II° special cast iron ring
Three - piece scraper ring made of chromium-plated special steel alloy

CDI

Carburation adjusting
± 20% at min/medium/max
3 different maps