Kit 70cc Ø47mm AIRSAL luxury cast iron bi-segment DERBI euro 3 & 4

Here is the brand new 70cc kit from AIRSAL. After a frank suck in the AIRSAL aluminum kits following a strong demand, finally released these cast iron kits! You should know that a cast iron kit is more solid on long journeys, so it allows additional reliability but it gives a little less power than an aluminum kit. This model in diameter Ø47mm is a real 70.5cc! It is a very good high engine, very well finished which will bring much better performance to your machine without renouncing the solidity.

It is of course equipped with a two-segment piston for better torque and sweeping. it has 5 transfers, the sides at the base are well worked. The internal sides are nicely drawn. In addition it is sold with an aluminum cylinder head for better heat dispersion. In summary if you kit will give very good performance especially in low speed and aillant excellent strength.

We recommend it with at least: 19mm carburation + 0.30mm valve blades (original pipe, original valves and original valve diffuser can be kept), racing muffler, reinforced crankshaft and bearings, spark plug cold racing ...

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!