Pack ITALKIT Racing 85cc Ø50mm bi segment (with crankshaft stroke 43mm) for mécaboite driving DERBI euro 1 & 2

Photo and more complete description to come !!! Main photo not contractual !!!

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

New 2015, we announce the color: high-end crankshaft with 90mm forged connecting rod and Ø20mm bearings, without balancer, cage in 12x17x15, very high quality steels, dynamic top balancing, excellent diagrams, high compression stud head, excellent report compression, cooling studied with a cylinder type semi-closed, large diameter exhaust with boosters passing on the lateral transfers, 6 large transfers of admission with studied forms and specific architecture, race 43 with diameter Ø50mm piston, piston segment bi graphite, ....

As usual, the brand ITALKIT is no exception to the rule by composing this pack of the best parts on the market today. The aluminum alloy cylinder has a special heat treatment and an internal coating in nickel / silica and external chrome, giving it all its strength and reliability, foolproof! With no less than 9 lights including 6 admission transfers including 3 side and 2 rear, 2 boosters shaped worked passing on the side and finally the impressive exhaust outlet by its shape and size to the point that the exit diameter was reviewed on the rise and measures no less than Ø30mm, between fixing pin for the exhaust 46 mm.

The competition has to be held well and is far behind on the most part of maxi-kits. The only negative point of this pack, the lack of a set of clutch spring, bearings celerons and several base seals like the pack for AM6! A novelty of the great Spanish brand ITALKIT and finally available from us, this 85cc engine pack ultra complete mounts on mécaboite driving DERBI Euro 1 & 2. This set will offer you all the power sought to distinguish you during competition and clinch the first place .

That's not all, the cooling has also been completely revised and corrected to offer the best possible heat exchange and at the same time to obtain a significant performance gain, in fact less a motor runs out of steam and heats and the more the performances remain, to accompany this cylinder, a breech stud! High-end model, specially designed to offer maximum compression. The breech block has a hemispherical combustion chamber and has a very polished, very smooth and clean polished finish, which has been upgraded at the same time.

The piston Ø50mm meanwhile is not chosen at random, it is a bi segment model with graphite treatment. In other words, the very high quality material whose fame / quality is second to none. This piston is therefore equipped with two thin segments chromed thickness 1 mm thus promoting the revving and especially the torque. Thanks to the graphite treatment, its forms 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 the frank revisions, brutal change of diets and extended endurance on circuit.

In the end, the special crankshaft race 43mm and connecting rod 90mm without balancer. This model is unique and again, really succeeds. It is perfectly balanced and cut in the best steels on the market. Its dynamic equilibration results from the inorganic compound to tungsten carbide. This material in summary is a combination of carbon and tungsten. It is a very dense material, very resistant and very hard.A new connecting rod is also installed on this linkage, ultra reinforced model machined in the mass. Ultra light, it is really reserved for the competition!

It is this type of connecting rod that equips the real competition crankshafts BIDALOT or MALOSSI MHR BIG BORE and other rare vilo! Featherweight and maximum rigidity are at the rendezvous. Its lubrication is improved, the cage of small legs is increased for a better hold, treated silver and mounted on wedges anti-friction A crankshaft you will have understood, perfectly conceived and adapted to accompany this high engine, being able to support without no problem of the craziest engine speeds of up to 16,000 rpm and in combination with this cylinder and stroke 43mm, the actual displacement is 84 cc.

Clearly, this pack / 85cc Ø50mm racing kit for your engine DERBI euro 1 & 2 will be a must to offer you guaranteed victories and sensations guaranteed key!

We recommend you to accompany this pack with at least : a carburation of 26 to 28 for the better, a kit of admission in flexible assembly, ignition Selettra of ITALKIT with variable advance, candle cold NGK B105EGV, motor oil racing obligatory, escape exhaust racing big volumes essential ....

This pack contains :

-Cylinder Ø50mm aluminum 6 transfers with large exhaust booster
-Piston graphite bi segment Ø50mm
-Cylinder head cover
-High compression cylinder head hemispherical shape, polished finish
-2 segments Ø50mm thin chrome plated thickness 1 mm
-Piston reinforced piston Ø12 X 37mm
-Piston type piston clips
Ultra-reinforced crankshaft long stroke 43mm super reinforced 90mm rod
-Silver needle silver Ø12X17X15mm
-Pack engine seal
-X4 Reinforced studs M7X120mm
-Installation instructions
-Autocollant

R Technical écapitulatifs:

- Work of original crankcases needed for transfers reviewed upwards
- Cooling: semi-closed liquid
- Compression ratio: nc
- Displacement announced: 85cc
- Actual displacement: 84cc
- Advertised power: nc
- Base gasket provides thickness nc
- Recommended squish value nc
- Volume of the chamber (breech) nc

Optionally we offer a preparation stage 1, this preparation is a modification of the exhaust port by increasing the diagrams and improving the pipe, it increases the performance of the cylinder. An improvement of the bottom of skirt is also included in this modification. Allow a little extra time for this preparation!

This high engine mounts on the 50cc motorcycles with gearboxes equipped with the DERBI Euro1 and Euro2 engine:

BULTACO Astro enduro 50cc
BULTACO Lobito supermotard 50cc

DERBI GPR 50 Nude before 2004 (EBS050)
DERBI GPR 50 Racing before 2004 (EBS050)
DERBI GPR 50R Replica year 2001 to 2004
DERBI GPR 50cc year 1998 to 2001
DERBI Senda 50cc before 2000 (tubular frame)
DERBI Senda 2000 50cc before 2004 (perimeter frame) Euro2
DERBI Senda DRD supermotard before 2000 (tubular frame)
DERBI Senda DRD supermotard before 2004 (perimeter frame) Euro 2
DERBI Senda Enduro before 2000 (tubular frame)
DERBI Senda R DRD Enduro before 2000 (tubular frame)
DERBI Senda R DRD Enduro front 2004 (perimeter frame) Euro2
DERBI Senda SM before 2000 (tubular frame)
DERBI Senda SM before 2004 (perimeter frame) Euro 2
DERBI Senda X-Race 2000 before 2004 (perimeter frame) Euro 2
DERBI Senda X-Race Trail before 2000 (tubular frame)
DERBI Senda X-Trem Enduro before 2000 (tubular frame)
DERBI Senda X-Trem Enduro front 2004 (perimeter frame) Euro 2
DERBI Senda X-Trem SM before 2000 (tubular frame)
DERBI Senda X-Trem SM before 2004 (perimeter frame) Euro 2

GILERA GP Replica 50cc
GILERA GSM 50cc
GILERA HAK Euduro 50cc
GILERA RCR Euduro 50cc (tubular frame)
GILERA SMT SM 50cc (tubular frame)
GILERA Sioux Enduro 50cc
GILERA Zulu Enduro 50cc

And many other models ...