Reserved for competition only, cylinder exceeding the authorized displacement limit.
Here is the high engine kit 80cc first price of the Spanish house AIRSAL, this model that we call Sport, also exists in Luxury with two-segment TECH piston at the price of 169.99 euros with us! This kit certainly has a low price but yet a quality and performance very present.
Its 50mm diameter still offers real 78.53cc in combination with the normal stroke of the DERBI so 40mm. Its architecture is excellent, its channels numbering 5 are very well finished and has a large bar escapement. It will offer high revs, torque and longevity!
Indeed, the diagrams have a good torque / high speed ratio, coupled with this large 50mm diameter we therefore recommend this cylinder with a good configuration all the same! A good racing exhaust, a minimum 24mm carburetion to get the most out of it, a reinforced crankshaft and bearings ...
The workmanship is really good for such a price. The piston is therefore the hard chrome domed mono-segment model, it has side grease nipples. The cylinder head is a high compression, the chamber is entering in order to have a good alignment chamber / cylinder and a good holding of the cylinder head gaskets. The chamber is a hemispherical model with a polished finish. This cylinder head allows you, if desired, to reconnect the antifreeze to your carburetor.
Clearly this cylinder is really a superb quality / performance / price ratio! It will certainly be less efficient than a MALOSSI MHR, BIDALOT, or even POLINI because its distribution, its channels, the study, the exhaust venturi ... are relatively limited, al'identical it is a nykasil scanimet, incomparable to hard nykasil or ceramic plasma! But it will already be very efficient, especially for those who do not want a complex and difficult kit to talk about. A good trainer will also be able to draw quite astonishing performances from it.
In addition to this, you need to know more about it.
We recommend it with at least: 24mm carburetion with air box preparation + 0.30mm / 0.35mm valve blades, racing exhaust, reinforced crankshaft and bearings, cold racing spark plug ...
The pack contains:
-Cylinder racing aluminum 5 transfers exhaust bar
-Piston bi-segments with side grease nipples
-2 thin domed chrome segments 1mm thick
-2 piston clips in C
-Piston axis Ø12mm X 40mm
-High compression incoming chamber cylinder head
-Exhaust studs, washer ...
-Pack full seal
-Notice ...
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!
