Kit MALOSSI 289cc Ø74mm, cylinder / piston + electronic box calculator for YAMAHA X-CITY, X-MAX, MBK CITYLINER, ...

You've been waiting for all ... The big kit that will finally roar your maxi 250cc scooters YAMAHA X-MAX, YAMAHA X-CITY, MBK CITYLINER & MBK SKYCRUISER!

 

Here it is, the famous kit Ø74mm which is also delivered with the electronic multi-curve calculator As usual MALOSSI has made a powerful kit, solid, coupleux and very high-end. This little monster will project your engine of 250cc to 289cc real extreme performances.

 

MALOSSI has for this thermal group found the perfect ratio race / diameter, this cylinder serras without problem supported by your crankshaft of origin. It is already running in competition and endurance so it is to say if it is tested ...

 

Force Master 2 is the electronic box that allows to change the injection to fit perfectly to the new 4t Malossi thermal unit. This box has been programmed with different programs to be perfectly matched to your vehicle, whatever its configuration! With these boxes 4 curves are offered to you ...

 

Technical characteristics :

Cylinder

Bore: Ø 74 mm; Stroke: 66.8 mm; Cylinder capacity: 287.29; Compression Ratio: 1:11.
Material: high-tempered and tempered silicon primary aluminum alloy, cylinder liner with silicon carbide application in a galvanic nickel matrix and crossed smoothing with two diamond passes, with very tight tolerances
Machining: CNC machine tools with high precision
Cylinder-piston couplings with coupling tolerance 0.05 mm
Heat exchange surfaces recalculated and enlarged

Piston

Extra compact with three segments
Material: special aluminum alloy with high silicon content at low thermal expansion with application of tin on the sliding walls
Machine tool machining at CN
Lightened and reinforced
Expanded heat exchange surfaces

segments

Specials with high sliding and very high mechanical resistance
I ° compression segment in nitrided steel and chrome
II ° special cast iron segment
3-piece scraper ring made of special steel, chromed

Electric case

Carburetor adjustment
± 20% at min / medium / max
4 different programs
curve 1: Malossi cylinder - original exhaust
curve 2: Malossi cylinder - modified exhaust
curve 3: Malossi cylinder - modified exhaust - Malossi camshaft
curve 0: setting value set to zero

 

Products strictly reserved for the competition in places provided for and according to the provisions of the competent sports authorities. We disclaim all liability for improper use.

 

Mounts on :

 

MBK EVOLIS 250 ie 4T LC 2014 ->

YAMAHA X CITY 250 ie 4T LC euro 3 (G358E)
YAMAHA X CITY 250 ie 4T LC euro 3 2014-> (G3B7E)
YAMAHA X MAX 250 ie 4T LC euro 3 2010-> 2013 (G389E)
YAMAHA X MAX 250 ie 4T LC euro 3 2014-> (G3B3E)
YAMAHA YAMAHA MAX X 250 ie 4T LC euro 3 2008-> 2009 (G362E)