This is the crankshaft MVT COMPETITION SC for SHORT SERVICE. This crankshaft uses the best steels for its manufacture! In order to avoid the breakage of the dimmer arm, this crankshaft does not have a groove, so you cannot put back an original dimmer with the holding clips, you will have to use a sport dimmer as a DOPPLER ER2, ER3, one MALOSSI VARIOTOP or something. This crankshaft uses a cage increased in external Ø 17mm. MVT is the only brand to offer an increased cage on MBK 51 engines! Basic, it comes with a 12mm shaft cage, but you can, by setting up a Ø13X17X16mm cage, set up a 13mm axis. Balancing level, it can be noted that it is suitable for particularly high speeds or heavy pistons with its 4 workings reducing weight in mind! The rod is ultra reinforced placed on an increased maneton.
In the end, it is an ultra racing crankshaft intended to be placed on all types of housings (origins, POLINI, EUROCILINDRO, OMEGA...). With a 12mm or 13mm axis, 50cc or 70cc.
Characteristics:
Vilebrequin silks: Ø16mm (origin)
Masses: full
Rod length: 85mm (original)
Cage: reinforced increased (Ø12mm for piston axis) and can receive a 13mm axis with a cage in 13X17X16
Reinforced: yes to all trials
Race : origin 41.80mm
Greases: revised and corrected
Balancing: yes and dynamic ideal big speeds and / or heavy pistons!
Gets on:
MOTOBECANE AV7, MBK 51, AV10
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