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- Apr 17, 2003
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- 5,391
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- Menno, SD
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- USA
- Snowmobile
- 2014 Yamaha SR Viper LTX, 2014 Yamaha SR Viper RTX SE, 2015 Yamaha SR Viper MTX SE 162 (turbo), 2015 Yamaha SR Viper MTX SE 153
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Can anybody tell me how long the rail extensions need to be if you take a pro action and stretch it from 121 to 136? Also does anyone know how long they are when you relocate the skid to the smaller approach angle also? Thanks!
jtssrx
Lifetime Member
Allen I think it's 7.5 inches longer on the 136.
I think you have to go 144 to change the approach angle. If you look on Mountain performances web site he talks about it.
I think you have to go 144 to change the approach angle. If you look on Mountain performances web site he talks about it.
- Joined
- Apr 17, 2003
- Messages
- 5,391
- Location
- Menno, SD
- Website
- www.ulmerracing.com
- Country
- USA
- Snowmobile
- 2014 Yamaha SR Viper LTX, 2014 Yamaha SR Viper RTX SE, 2015 Yamaha SR Viper MTX SE 162 (turbo), 2015 Yamaha SR Viper MTX SE 153
- LOCATION
- Menno, SD
- WEBSITE
- www.ulmerracing.com
Thanks J, on the 136" kit it says in option 2 that with a 136 you can remount the suspension too, but then in option 3 it says for 141/144 only. hmmmmm. Need more traction for the Viper on the grass. 121 isn't cutting it! I want to go to a 136 and relocate the rear suspension down and back so there's more track on the ground. Also going to put billet 8" rear wheels in.
Snomad
Extreme
I believe with the kit that moves the rear suspension back the rail extension is shorter. I called mountain performance about this a few months back. You could get the exact length from them.
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