Mounts with the original cylinder head. Approved cylinder respecting the 125cc displacement.
Here is the complete 125cc cylinder / piston kit from the big brand ITALKIT Competition for 125cc 2-stroke engine ROTAX 123, aprilia RS, AF1, EUROPA, PEGASO, ... and other models.
This original type kit very well improved from ITALKIT offers a real power gain compared to the original and preserves a 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 genuinely well-designed specific intake transfers and a large valve exhaust, oval / enlarged.
The valve exhaust system is identical to the original, the valve is not supplied with this cylinder, so you will have to take back the original part.
The aluminum alloys used are excellent and will guarantee increased reliability and solidity of your engine, provided that it is mounted perfectly and without burrs.
This cylinder is accompanied by a high-end VERTEX piston with specific heat treatment. Its 2 thin thickness segments will favor frank recoveries, revving but without neglecting speed at high revs in view of their finesse.
Thanks to the treatment, its forms and its composition, this piston has been very well designed and studied in order to offer better thermal expansion, at the same time fitting perfectly with this cylinder to support frank recoveries, brutal change of regimes and prolonged use.
Obviously delivered complete as presented, you will be as surprised as we have been on this material which guarantees extreme reliability and performance largely at the rendezvous.
We recommend it with at least: a detent exhaust, a minimum carburetor 30mm (flat bushel will be perfect), original cylinder head. If your engine is prepared, or even old, we will recommend changing the crankshaft, by the way do not hesitate to ask a reinforced connecting rod kit. A set of rigid strips of carbon valves will also be welcome in order to exploit the right regimes.
Optionally we offer you a stage 1 preparation, this preparation is a modification of the channels and the exhaust light by increasing the diagrams and improving the duct, it increases the performance of the cylinder. An improvement in the piston and bottom of the skirt is also included in this modification. Allow a little extra time for this preparation!
This 123 model (unlike the 122) normally needs a modification at the location of the valve to install a pneumatic valve, but the cylinder being an ITALKIT, the hole is already drilled! There is therefore no modification to be made to install a pneumatic valve!
