Malossi Big Bore Kit for Yamaha Zuma 125. Make it legal on the Freeway, or just a whole lot faster. 

Malossi combines I-Tech cylinder technology and the ForceMaster CDI in this incredible Big Bore kit for the Yamaha Zuma 125. If you want the best for your new Zuma, this is it. Italian Scooter Racing at it's finest. 

Complete cylinder
I-TECH 4 STROKE
58mm aluminium 155 cc

The new cylinder kit equipped with CDI for Yamaha 125 4-stroke 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 programmed with 4 different maps so as to be coupled perfectly with your vehicle whatever its setting is!

TECHNICAL FEATURES

Cylinder
Bore: 58 mm; Stroke: 57,9 mm; Displacement: 152,9 cc; Compression ratio: 1:12
- 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.

CDI
- Carburation adjusting
- ± 20% at min/medium/max
- 4 different maps:
. curve 1 : highest performances with original cylinder
. curve 2 : Malossi cylinder and original exhaust system
. curve 3 : Malossi cylinder and tuned exhaust system
. curve 4 : CDI excluded

Fits

Yamaha Zuma 125

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