Top speed issue.

[Jimmy mtx]

Need help!! I'm running 2016 mtx 153 in this years Cains Quest snowmobile endurance race and my sled only goes 113 kms. I changed the gearing to 24-50 which was the same as the xtx. Played with the helix spring tension but still the same speed. Running at 8200 rpm. Need help. Was thinking I'd get around 130-135 kms which would be fast enough were this is a 3600 km endurance race over one week. So was thinking by doing this I could do 90-100 kms at at lower rpm to help on gas as well with little more speed if I need it. So how do I get her at that speed HELP. Please

 

[vip]

u need to install an xtx driver to get speed out of sled but it will also put your speedo out as well I have tried a lot of different gearing with little change

 

[stingray719]

Need help!! I'm running 2016 mtx 153 in this years Cains Quest snowmobile endurance race and my sled only goes 113 kms. I changed the gearing to 24-50 which was the same as the xtx. Played with the helix spring tension but still the same speed. Running at 8200 rpm. Need help. Was thinking I'd get around 130-135 kms which would be fast enough were this is a 3600 km endurance race over one week. So was thinking by doing this I could do 90-100 kms at at lower rpm to help on gas as well with little more speed if I need it. So how do I get her at that speed HELP. Please

Look in Viper FAQ and look at COTC, that will give you the clutching you need for varying conditions.