Not approved on open road, formally reserved part in the competition, this crankshaft increases the engine displacement. Do not mount on Derbi GPR.
Crankshaft very upscale Mazzuchelli (like MHR BIG Bore) rod assembly ITALKIT special long race 43mm rod and 90mm as the origin. This model is unique and perfectly formed. Full masses, it is dynamically balanced and carved out the best steel market, expected to be assembled with balancer. Its dynamic balancing result of the inorganic compound to tungsten carbide. The ranges, bearings bristles are increased to Ø20mm, there is no better for a low engine mécaboite!
In summary the tungsten carbide is a combination of carbon and tungsten. It is a known material very dense, very strong and very hard. A new connecting rod is also installed on this linkage, ultra reinforced model 90mm forged and machined in the mass. Ultra lightweight, it is really reserved for the competition! This linkage will support without any problem of engine speeds of 16,000 revolutions / minute.
It is this type of rod that team real racing crankshafts BIDALOT or MALOSSI MHR BIG BORE and other rare vilo! Light weight and maximum rigidity are at the rendezvous. Its lubrication are improved, the cage rod feet is increased for a better grip, processed silver and mounted on anti-friction wedges. Comes with its competition needle cage treated money Ø12x17x15mm size.
Use it to get your kit from 70 to 80cc through the long race 43mm or replacement crankshafts that are provided in the ITALKIT Alu 80cc packs.
Characteristics:
Full Masses Ø77mm
-Soies (Worn bearings) Ø20mm
-Bielle 90mm as the origin
-Course 43mm (+ 3mm)
-Équilibrage Ultra dynamic
-Materials Upscale strengthened
Flush without balancer
contains:
-Cage To Ø12X17X15mm needle
-Vilebrequin Race 43mm rod 90mm DERBI except GPR
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