RRD long race crankshaft 44.9mm now available !!!
Top late! This piece is for informational purposes only, it has not been manufactured for more than 10 years, please do not order it. thank you for your understanding
This crankshaft is a model in long race, the only one to be released for MBK 51, not to be confused with the long rods, the race represents the piston stroke, if we decentre the crankpin of 1,5mm it offers 3mm additional race , as an example:
Kit Ø47mm in stroke 41,8mm (origin) = 72,52cc real
Kit Ø47mm in stroke 44,8mm (this crankshaft) = 77,72cc real
This crankshaft offers additional cubic centimeters, a huge torque gain while getting closer to the engine called "square" with your big kits! This model is originally intended for Ø45,5mm kits. Apart from that, this crankshaft passes in the casings without any machining, the connecting rod remains of origin size. This crankshaft is cut in the best steels and has undergone 3 treatments, the connecting rod is a large super reinforced model, it is machined at the head for its passage and has 2 lubrication holes in the foot. His cages of head and feet are reinforced models.
The masses are fuller than the original to offer more pre-compression. In summary this piece is a large crankshaft that will offer you performance in couples, cubic centimeter and power thermals on your big kits. Delivered with crankshaft needle cage, base seals, cylinder head gasket Ø45,5mm. We will only regret a balancing not enough pushed!
Thread not left side ignition, buy if you want our special nuts POLINI!
Summary :
Bristles: Ø16mm as the original origin
Model: reinforced
Stroke: 44,8mm against 41,8mm for the origin
Connecting rod size
1.5mm wedge delivered
Parts for this crankshaft :
nut not reversed
spare needle cage
1.5mm cylinder block
head gasket Ø45,5mm 1mm
