Wizzard717
New member
Could someone please give me the dimension off a stock 121 viper from the ground up to the center of the rear mounting bolt of the trailing arm please ? (this would be a vertical dimension off the ground) If someone has a mountain viper and could give that dimension also, that would be great. Thanks !
This will vary with skid and ski shock adjustment. Are you simply looking for a typical number for a stock setup? While not accurate at all, the most consistent "position" would be at set-in. Basically compress the suspensions by getting on the sled and then getting easily off the sled. Mine is not stock anymore so would likely not be very useful.
Wizzard717
New member
Yes, i'm just looking for a basic dimension withOUT a rider on the sled. In the process of stretching my 121 viper to a 144 with a DOO skid and i forgot to get dimensions on the stock sitting height before i gutted the stock yami skid out. I have the doo skid mounted at the front locations(based on doo oem dimensions of the sled it came out of) and i have the rear bumper on a chain fall so i can lower and raise it as needed to play with the angle the tunnel will be. So far, with the doo skid in the viper sitting at about stock doo height (as far as mounting locations go) it seems like the tunnel is sitting really really low on top of the skid. When i raise the tunnel up to where id like to to be the skid is not sitting flat on the ground what-so ever. i would just like the rough stock dimenion from the stock viper trailing arm bolt so i can adjust the height and just compare to where i'm at. Sorry for rambling on. I was all excited when i finished the new front mounting locations and new bracing and then i got the doo skid in there(without track) and started playing with it. I found out in order for the skid to be sitting flat i have to drop the tunnel way way down to get it to sit right. and yes.....i blocked under the skid for the space the track will take up. I'm just very frustrated. I wanted the rear tunnel to be sitting higher on this skid. It looks 10X better sitting up higher then the stock height.
If nobody else can help you, I think I have some numbers written down somewhere taken before I put the XTX skid in. I'll look but it might be a day or 2.
Devilin AblueDress!
New member
http://www.totallyamaha.net/forums/showthread.php?t=91630
My new to me Viper S. 10 3/4 to center of trailing arm bolt. 16"to bottom of front bumper. Gave 2 measurements as I am running powder pro's with hartman ext/relocation 144". Re-used pro-action but relocation moved skid bolts back approx 4" and down approx 2". Would have given a measure towards the rear of sled but sitting in the rear of my 4 place trailer and last foot or so of track is sitting over top the beaver tail break point not touching the floor.
My new to me Viper S. 10 3/4 to center of trailing arm bolt. 16"to bottom of front bumper. Gave 2 measurements as I am running powder pro's with hartman ext/relocation 144". Re-used pro-action but relocation moved skid bolts back approx 4" and down approx 2". Would have given a measure towards the rear of sled but sitting in the rear of my 4 place trailer and last foot or so of track is sitting over top the beaver tail break point not touching the floor.
Wizzard717
New member
Mine is sitting at 11 3/4 at trailing arm bolt and 18 1/2 at bottom of front bumper....but i also put the shock adaptors on my sled with doo summit shocks to raise front end.....so im not exactly comparing apples to apples