Mounts with the original cylinder head. Homologated cylinder respecting the 125cc displacement.
Here is the complete 125cc cylinder / piston kit from the great ITALKIT Competition brand for 125cc 2-stroke ROTAX 122 engine, aprilia RS, AF1, EUROPA, PEGASO, ... and other models. This sport version kit is very well optimized, from ITALKIT it offers a real gain in power compared to the original and preserves very good solidity, a diameter of 54mm for the VERTEX piston is an original displacement of 125cc.
The cylinder is therefore an aluminum model with a well-designed architecture and channels. With specific intake transfers really well designed and a large valve exhaust, oval / widened shape. The valve exhaust system is identical to the original, the valve is not supplied with this cylinder, it you will therefore have to take back the original part.
The aluminum alloys used are excellent and will guarantee increased reliability and strength of your engine, provided they are fitted perfectly and without burrs. This cylinder is accompanied by a top-of-the-range VERTEX piston with specific heat treatment. Its thin segment will promote clear recoveries, rapid revving but without neglecting the torque thanks to the diagrams and work done on the admission, transfers ...
Thanks to the treatment, its shapes and its composition, this piston has been very well designed and studied in order to offer better thermal expansion, at the same time agreeing perfectly with this cylinder to withstand frank revisions, sudden changes of regimes. and a prolonged use Of course delivered complete as presented (non-contractual photo), you will be as surprised as we were on this material which guarantees an extreme reliability and performances largely with the appointments.
We recommend it with at least : a relaxation exhaust, a minimum 30mm carburetion (flat bushel will be perfect), original cylinder head. If your engine is prepared, or still old, we will recommend changing the crankshaft, in passing do not hesitate to install a reinforced connecting rod kit. A set of rigid carbon valve slats will also be welcome in order to exploit the good speeds.
As an option we offer a stage 1 preparation, this preparation is a modification of the channels and the exhaust port by increasing the diagrams and improving the duct, it increases the performance of the cylinder. An improvement to the piston and the bottom of the skirt is also included in this modification. Allow a little extra time for this preparation!
This model 122 (unlike the 123) does not need any modification to the position of the valve to install a pneumatic valve! The hole is already made! In any case, on ITALKIT models, all ROTAX cylinders have the hole!
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