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Cylinder / piston without replacement cylinder head, kit 80cc Ø47,6mm, 6 transfers, big exhaust to booster, .... To be accompanied by a 44.90mm long stroke crankshaft and its cylinder head with high compression stud.
Not homologated on open road, only reserved for competition on circuit, closed road.
This cylinder, piston without cylinder head 80cc Ø47.6mm mounts on mécaboite driving DERBI euro 3 and euro 4, it is the replacement for the 80cc racing pack with 44.90mm long stroke crankshaft and the cylinder head with high compression stud. therefore the ITALKIT crankshaft in stroke 44.90 and connecting rod 90mm In combination with the stroke 44.90 mm, the actual displacement is 79.86cc. 
In addition to this, you need to know more about it.
The cylinder is made of aluminum alloy and has a specific heat treatment and an internal coating in niquel / silica and external in chrome, giving it all its strength and reliability. Equipped with 6 intake transfers, 2 boosters with worked shapes and finally the impressive exhaust outlet by its shape and size to such an extent that the outlet diameter has been revised upwards and greatly enlarged! 
The cooling has also been completely revised and corrected in order to offer the best possible heat exchange and at the same time to obtain a significant performance gain, in fact the less an engine runs out of steam and heats up and the more performance remains present. The Ø47.6mm piston is not chosen at random, it is a single segment model from ITALKIT with graphite treatment. 
In other words, very high quality material whose reputation / quality is well established. This piston is therefore equipped with a fine chrome segment 0.80 mm thick thus promoting the increase in speed. Thanks to the graphite treatment, its shapes and its composition, this piston has been very well designed and studied in order to offer a better thermal expansion, agreeing at the same time perfectly with this cylinder to withstand frank times, sudden changes of speed and prolonged endurance on the circuit. 
Delivered complete as presented, you can trust the photographs, they are contractual as usual. This cylinder / piston will be ideal in case of wear or breakage and replacement of your old high engine, without changing everything. In addition to this, you need to know more about it.
We recommend that you accompany this pack with at least : a carburation of 24 to 28 for the better, an admission kit in flexible assembly, ultra reinforced crankshaft ITALKIT Competition 44.90 stroke / 90mm rod, ITALKIT high compression stud cylinder head, ignition Selettra from ITALKIT with variable advance, cold spark plug NGK B105EGV, compulsory racing engine oil, high volume racing trigger exhaust essential ....
Contains :
-Cylinder Ø47.6mm aluminum 6 transfers with large exhaust booster
-Piston ITALKIT graphite mono segment Ø47,6mm
-Segment Ø47.6 end chrome thickness 0.80mm
-Reinforced piston axis Ø12 X 38mm
-Crab type piston clips
-Pack motor seal
-Installation instructions
-Sticker
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!
Reference: VM.12.4
Ideal so that your clutch does not slip, this set of springs has exceptional quality but also a very low price.
Reference: 6204 TB.P63
A bearing that will support all your most advanced configurations. Real competition piece!
Reference: ESP.07.125.4
The strongest with MALOSSI, specially lengthened for high engines with wedges for stroke or long connecting rod, withstand extreme tightening torques. Amply support 25nm (2.25 mkg)!
Reference: SE.476.08.IE
High quality segment, ideal for maintaining your high engine kit or pack ITALKIT 70 and 80cc 47,6mm in diameter.
Reference: RST.222
A special competition needle cage, silver treated from ITALKIT in Ø12X17X15mm.
Reference: CU.12.52.1
Ideal in case of breakage or veiling for a refurbishment of your high engine large displacement on DERBI euro 3 and 4.
Reference: PI.02.476A.V
Complete replacement graphite single segment piston, ITALKIT top-of-the-range model for high engine kit in long stroke on DERBI engine.
Reference: CU.12.92
Complete replacement cylinder head (decomposable in two parts), special for the high engine running 44.90, 80cc on Derbi euro 3 and 4.
Reference: CU.12.92.5
Ideal in case of breakage or wear, high quality cylinder head stud, ITALKIT Competition model for 80cc Ø47.6 mm pack and kit 44.90 mm long stroke on DERBI euro 1, 2 and 3 & 4.
Reference: VJ.12.19
Replacement seals for the maintenance of your pack and high engine 80cc in long stroke 43 to 44.90mm ITALKIT on DERBI euro 3 and 4.
Reference: CB.12.245.1
Mazzuchelli top-of-the-range 44.90mm long stroke special crankshaft, forged connecting rod machined in the mass 90mm, ... with Ø12 mm silver treated needle cage Dynamic balancing designed to be assembled with a balancer.
Reference: CK.12.776.GR
High competition engine for DERBI euro 3 and 4! Special 44.90 race, 80cc Ø47.6mm kit, 6 transfers, large exhaust with boosters, .... A real powerhouse, to be accompanied by a 44.90mm long stroke crankshaft.
Reference: K.12.245.20
A 100% full competition pack for Derbi Euro 3 engine! Special race with 44.90 ultra strengthened vilo designed to be mounted without balancer, 90mm rod, 80cc kit Ø47,6mm 6 transfers with big exhaust booster, studs, cylinder head high compression pad with volume increased room. In short, a real concentrated performance!
Reference: CB.12.245.2
Mazzuchelli top-of-the-range 44.90mm special long stroke crankshaft, forged connecting rod machined in the mass 90mm, ... with Ø12 mm silver treated needle cage Dynamic balancing designed to be assembled without balancer.
Reference: CK.12.776.GR
High competition engine for DERBI euro 3 and 4! Special 44.90 race, 80cc Ø47.6mm kit, 6 transfers, large exhaust with boosters, .... A real powerhouse, to be accompanied by a 44.90mm long stroke crankshaft.
Reference: 9934260
Top competition engine for DERBI euro 3 and 4! Special 44mm race, 86cc Ø50mm kit, 5 transfers, large oval exhaust. A real concentrate of power, to be accompanied by a 44mm long stroke crankshaft.
Reference: CK.12.788.GR
High competition engine for DERBI euro 3 and 4! Special race 42, 75cc Ø47.6mm kit, 6 transfers, large exhaust with boosters, .... A real powerhouse, to be accompanied by a 42.00mm long stroke crankshaft.
Reference: CI.12.788.GR1
Cylinder / piston without replacement cylinder head, kit 75cc Ø47,6mm, 6 transfers, big exhaust to booster, .... To be accompanied by a 42.00mm long stroke crankshaft and its high compression stud cylinder head.
Reference: 480588 + 468209
Set consisting of the excellent DOPPLER VORTEX kit and the reinforced DOPPLER linkage.
Cylinder / piston without replacement cylinder head, kit 80cc Ø47,6mm, 6 transfers, big exhaust to booster, .... To be accompanied by a 44.90mm long stroke crankshaft and its cylinder head with high compression stud.
