Kit 70cc Ø47mm POLINI cast scooter HONDA 50cc BALI, SFX, SGX, SH, SXR ...

Attention, high engine reserved for the competition. Does not respect the regulatory 50cc capacity regulated by legislation in some countries.

The Italian brand POLINI proves once again with this high engine, the quality of its parts and the real gains in performance. This 70cc cast iron Ø47mm kit is no exception to the rule. It is the perfect balance between performance and strength. Its cast iron cylinder will provide all the necessary strength with heat exchange surfaces worked and improved.

It has 5 intake transfers, 4 side and 1 rear with a standard oval exhaust designed for maximum engine performance. The architecture and work on this cylinder is accurate and very well finished overall.

A high-end bi-segment piston accompanies this high-performance engine, specially designed to give low-end torque and maintain a reliable and durable engine even at high speeds. This piston is made of special aluminum alloy lightened and reinforced. The latter has two segments with axle and reinforced piston clips.
The cylinder is supplied with its cylinder head, equipped with a high compression combustion chamber with a polished finish. For more compression and reliability, it is mounted with a viton O-ring.

Clearly you'll understand, this high engine is a concentrate of Italian performance thanks to the experience in the preparation of engines for the competition at Polini. Everything has been worked and improved, whether in the transfer ducts, the exhaust or the combustion chamber of the cylinder head. An excellent quality / price / performance ratio, delivered 100% complete with its jet, as shown.

We recommend to accompany this high engine with at least : a carburation of 19 to 21mm for the best in flexible mounting, racing horn or preparation of the original air box, racing exhaust, unbridled ignition or competition, crankshaft and reinforced bearings , racing candle, racing motor oil 100% synthesis ....

Optionally we offer a stage 1 preparation, this preparation is a modification of the channels and exhaust light by increasing the diagrams and improving the pipe, it increases the performance of the cylinder. An improvement of the piston and skirt stocking is also included in this modification. Allow a little extra time for this preparation!

Settles on :

-HONDA BALI 50
-HONDA SFX 50
-HONDA SGX 50 SKY
-HONDA SH 50 NEW
-HONDA SPORT 50 SFX
-HONDA SXR 50

And many other models ...