High inertia crankshaft for engines with high torque and power. Specially designed for use on hard surface and high speed tracks.
The engine will make more over revolutions with the VHM crankshaft compared to the standard crankshaft due to the increased inertia. The power output after maximum HP is higher and will hold on longer than the standard crankshaft.
Middle inertia crankshaft for engines with high torque and power. Specially designed for use on heavy sand surface and tight tracks.
The engine will make more over revolutions with the VHM crankshaft compared to the standard crankshaft due to the increased inertia. The power output after maximum HP is higher and will hold on longer than the standard crankshaft.
VHM Crankshaft KTM SX85 2013 2014 2015 2016 2017
Prox Rod.
VHM crankshafts are made of high quality steel which had a heat treatment. The cranks webs are CNC machined and grinded to precise dimensions. The advantage of the heat treatment is that the crankshaft in totally will be a lot stiffer, because the resistance to bending of the crankshaft is much higher. This results in a much longer performance and the crankshaft can also be overhauled many times.
For each application and use, power characteristics and riding styles requires another inertia of the crankshaft. We have a low, middle or high inertia crankshaft.
The crankshaft with a lower inertia reacts faster, which will increase the acceleration. On short and slow racetracks, we advise to use the crankshaft with a lower inertia.
A crankshaft with a higher inertia reacts slower, but carries speed further. When the engine is very hard to handle and has a narrow power band, then a crankshaft with a higher inertia will give better performance on the track. The power delivery from the engine to the ground will be transferred more smooth. The engine is much more in control.
