Not approved on the open road, part formally reserved for competition, this crankshaft increases the engine capacity.
Very high-end TOP PERFORMANCES crankshaft (like the MHR BIG Bore), MOTOR PARTS crankshaft special long stroke 44mm and 90mm connecting rod like the original. This model is unique and perfectly well designed. Solid masses, it is dynamically balanced and cut from the best steels on the market, designed to be assembled with a balancer. Its dynamic balancing results from the inorganic compound with tungsten carbide. The bearings, bearing bristles are increased to Ø20mm, one does not do better for a low engine of mécaboite!
In summary, tungsten carbide 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, ultra reinforced 90mm model forged and machined in the mass. Ultra light, it is really reserved for competition! This linkage will withstand engine speeds of 16,000 rpm without any problem.
It is this type of connecting rod that equips real competition crankshafts BIDALOT or MALOSSI MHR BIG BORE and other extremely rare vilo! Featherweight and maximum rigidity are there. Its lubrication is improved, the small end cage is increased for a better hold, treated in silver and mounted on anti-friction wedges Supplied with its competition needle cage, treated in silver size Ø12x17x15mm.
Use it to change your kit from 70 to 80cc thanks to the long stroke of 44mm or to replace the crankshafts which are supplied in the TOP PERFORMANCES 86cc Ø50mm packs.
Contains:
-Needle cage Ø12X15X15mm
-Crankshaft stroke 44mm connecting rod 90mm with balancer
-2 polyamide cage bearing
-2 reinforced spy joints
