70cc Ø44mm MALOSSI aluminum kit + YAMAHA AEROX and NEO'S 50 4T computer box from 2018

For everyone's pleasure... Here is the big kit that will give some punch to your 50cc 4-stroke scooter! The Ø44mm kit which is also delivered with the multi-curve electronic calculator. As usual, MALOSSI has made a powerful, solid, torquey and very high-end kit.

This concentrate of technology will project your displacement from 50cc to 66.30cc real, which means performance to match! This thermal group has the perfect stroke / diameter ratio, this cylinder will be easily supported by your original crankshaft.

The electronic box or FORCE MASTER 2 will allow you to change the injection to adapt perfectly to the new MALOSSI 4-stroke thermal group. This computer has been programmed with different programs in order to be perfectly matched to your vehicle whatever its configuration! With this case 3 curves are offered to you...

-Curve 1: Best performance with the original cylinder.
-Curve 2: MALOSSI cylinder and original exhaust.
-Curve 3: MALOSSI cylinder and modified exhaust pipe.

Let's see how MALOSSI did to increase the performance of the high engine, they obviously did not stop at simply increasing the diameter of the piston cylinder! Here are the technical characteristics of the kit ( MALOSSI description):

Cylinder

Bore: Ø44mm; stroke: 43.6mm
Displacement: 66.30cc; compression ratio: 1:12

-Material: primary aluminum alloy with a high content of quenched and tempered silicon, cylinder liner with application of silicon carbides in a galvanic nickel matrix and crossed smoothing by two diamond passes, with very strict tolerances.
-Machining: by high-precision CN machine tools.
-Cylinder piston couplings with 0.05mm coupling tolerance.
-Heat exchange surfaces recalculated and enlarged.

Piston

-Extra compact with three segments
-Material: special aluminum alloy with high silicon content and low thermal expansion with tin application on the sliding walls
-Machining by CNC machine tools
-Lightened and reinforced
-Enlarged heat exchange surfaces

Segments

-Special with high sliding and very high mechanical resistance
-I° compression segment in nitrided and chrome-plated steel
-II° special cast iron segment
-Three-piece wiper ring made of special steel, chrome-plated

With this kit you will be able to secure an ultra-robust, powerful and safe piece of equipment! Gone are the slow accelerations, the restricted top speeds… The disappointing restarts! Be careful, this kit should not be put into just anyone's hands... Driver beware!

Mounting on 4-stroke scooter :

YAMAHA AEROX from 2018 EURO 4 50 4T

YAMAHA NEOS from 2018 EURO 4 50 4T

Please note, does not fit on EURO 4! On the latter, you must take the kit alone without a box, and take the FORCE MASTER MALOSSI box for EURO 4 separately!