Pack BIDALOT RACING FACTORY WR 90cc 2017 mécaboite engine DERBI euro 3 & 4

Great novelty 2017!!! Here is the new BIDALOT RACING FACTORY 90cc engine pack in Ø50.5mm diameter for Derbi euro 3 and euro 4 engine. Available in WR version with new architecture, this kit reaches a displacement of 96.13cm3 thanks to the 44.90mm stroke crankshaft. Specially designed and produced for circuit competitions, runs...

What's more compared to the old 88cc version? In reality many modifications have been made such as the 7 transfers and the bar exhaust + boosters corrected and revised upwards. All adapted to the new 50.5mm diameter bore. These latest modifications have of course one and only goal, to further optimize power at high revs while maintaining maximum torque and power at low and mid-range. Have

Another plus of this high engine has been brought directly into the design of the cylinder which sees the addition of 4 fixing screws for the cylinder head stud and 4 screws for fixing to the exhaust. The cylinder is obviously made of aluminum with its specific treatment and Nikasil coating. The cylinder head stud preserves its high compression combustion chamber and is accompanied by the famous blue cylinder head cover cut in the mass. Have

Its piston is a top-of-the-range single-segment racing model with a special long stroke that will reduce friction and consequently increase high speeds. It has a new profile and is equipped with a thin segment in domed chrome steel, its 13 X 40mm axle and reinforced clips. Delivered 100% complete, you will have a complete seals pack with different thicknesses of base seals, 112mm studs, a 4mm thick aluminum wedge, allowing you to fine-tune your settings at the squish. Have

The crankshaft is therefore the ultra-reinforced 44.90mm long stroke RF racing model. Solid masses diameter Ø80mm, the bearing seats have a width of 42mm. Obviously perfectly balanced and machined, its dynamic balancing is specific, a connecting rod cut in the polished mass, treated with titanium nitride: a unique process of its kind. of the big end is in treated silver with free needles with lateral anti-friction washers with honeycombed bronze. A reinforced racing needle cage is supplied with this crankshaft to mount it to perfection. Clearly, everything is high-end and racing in this quality pack.

A needle cage Ø13 X Ø17 X 17.5mm is supplied with all the screws necessary for the assembly of this pack. An explanatory note in French will accompany you in the assembly with the recommendations of the BIDALOT brand for the wedging. Let's not forget that this new version is specially shaped to optimize the exhaust channel but also the cooling!