Pack ITALKIT Racing 75cc Ø47,6mm mono segment (with 42 stroke crankshaft without balancer) mécaboite driving DERBI euro 3 & 4

Not approved on open road, only reserved for competition on circuit, runs, closed road.

The color is announced: high-end crankshaft with forged 90mm connecting rod and Ø20mm bearings, 12x16x15 cage, very high quality steels, dynamic top balancing, excellent diagrams, high compression cylinder head with stud, excellent compression ratio, cooling studied with a semi-closed type cylinder, large diameter exhaust with boosters, specifically cut skirt, 6 intake transfers with studied shape, 42.00 stroke with Ø47.6mm piston diameter, graphite ITALKIT piston, ....



The competition has better behave and is far behind on most of the maxi-kits. Only negative point of this pack, the absence of a set of clutch springs, celeron bearings and several base gaskets like the pack for AM6! A novelty from the great Spanish brand ITALKIT and finally available from us, this ultra complete 75cc engine pack is mounted on mécaboite driving DERBI Euro 3 and 4. This set will offer you all the power you are looking for to distinguish yourself during competition and win first place .



As usual, the ITALKIT brand is no exception to the rule by composing this pack of the best current parts on the market. The aluminum alloy cylinder has a specific heat treatment and an internal coating in niquel / silica and external in chrome, giving it all its solidity and reliability, foolproof! Equipped with no less than 9 lights including 6 intake transfers, 2 shaped boosters and finally the impressive exhaust outlet by its shape and size to such an extent that the outlet diameter has been revised upwards and measures no less than Ø30mm, between axis of mounting for the exhaust 46 mm.



That's not all, 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, indeed less an engine runs out of steam and overheats. and the more the performances remain present.To accompany this cylinder, a cylinder head with competition stud! Top-of-the-range model, specially designed to offer maximum compression. The cylinder head stud is unfortunately not entering and mounted on an O-ring, the combustion chamber is hemispherical in shape and has a very successful polished finish, smooth and clean.



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 better thermal expansion, at the same time fitting perfectly with this cylinder to withstand frank revisions, sudden changes of regimes and prolonged endurance on the track.



Finally, the special 42mm stroke crankshaft and 90mm connecting rod. This model is unique and once again very successful. It is perfectly well balanced and cut from the best steels on the market. Its dynamic balancing results from the inorganic tungsten carbide compound. This material in summary is a combination of carbon and tungsten. It is a material reputed to be very dense, very resistant and very hard.A new connecting rod is also installed on this linkage, an ultra-reinforced model machined in the mass. Ultra light, it is really reserved for competition!



Featherweight and maximum rigidity are there. Its lubrication is improved, the small end cage is increased for better holding, treated with silver and mounted on anti-friction wedges. A crankshaft as you will have understood, perfectly designed and adapted to accompany this high engine, which can support without no problem with the craziest engine speeds of up to 16,000 rpm and in combination with this cylinder and the 42 stroke, the actual displacement is 74.73cc with no less than 20cv announced by the brand on condition of a perfect assembly and adjustments in the rules of the art!



In summary, this 75cc Ø47.6mm racing pack / kit for your DERBI euro 3 engine will be a major asset to offer you assured victories and guaranteed sensations! Delivered complete as presented, you can trust the photographs, they are contractual as usual.



We recommend that you accompany this pack with at least : a carburetion from 26 to 28, an intake kit in flexible assembly, Selettra ignition from ITALKIT with variable advance, cold spark plug NGK B105EGV, compulsory racing engine oil, expansion exhaust racing large volumes essential ....



This pack contains :

-Cylinder Ø47.6mm aluminum 6 transfers with large exhaust booster
-Piston ITALKIT graphite mono segment Ø47,6mm
-Aluminum cylinder head cover
-High compression hemispherical cylinder head stud, polished finish
-Segment Ø47.6 end chrome thickness 0.80mm
-Reinforced piston axis Ø12 X 38mm
-Crab type piston clips
-Ultra reinforced crankshaft 42mm long stroke ultra reinforced 90mm rod
-Silver needle cage Ø12X16X15mm
-Pack motor seal
-X4 Reinforced studs M7X120mm
-Installation instructions
-Sticker



Technical recaps :

- Work of the original housings necessary for transfers revised upwards
- Rear skirt of the specific cylinder
- Cooling: semi-closed liquid
- Compression ratio: 14.58: 1
- Announced displacement: 75cc
- Actual displacement calculated: 74.73cc
- Advertised power: 20CV



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!