Recent content by birkebeiner

What exactly is different on this race sled front end? A-arms, spindles, sub frame? How about the steering arrangement? Birkebeiner Norway 2015 SR Viper X-TX

Also interested to hear how this went... And, could this front end be made as a 38” for mountain use? Birkebeiner Norway 2015 SR Viper X-TX

Yamaha has released a new flash this fall, came out a month ago, or so. All Viper owners in Scandinavia received a letter from Yamaha highly recommending to reflash their sleds before they use the sleds this winter. I've done mine but haven't ridden it enough this winter yet to say whether it...

Please Enter Me in the Raffle

It's a tough question to answer and I won't answer yes or no. Why? Knowing what I know now, with the Sidewinder on the table, I would probably not have bought the Viper, but rather sold, or traded, my Nytro for a SW. However, if we take the SW out of the equation, and ask whether the Viper is a...

Love my Fox QS3s. Waaay better than the stock Float 3 Birkebeiner Norway 2015 SR Viper X-TX

SPI, is that Straightline Performance Inc? Sent from my iPhone using Tapatalk

Brilliant, that's where I want it :-) Sent from my iPhone using Tapatalk

Is the 6-8 hp increase all on top end? Any mid range increase? Sent from my iPhone using Tapatalk

Want the header as well but a bit too much $$$ at the moment... and once you add the header a PC V is needed as well (or ECU tune). It all adds up :-( Thought starting with the muffler would be good start, especially when it's on sale :-) Sent from my iPhone using Tapatalk

Not sure. It's this: http://www.ulmerracing.com/m/product.htm?id=-3549747 Sent from my iPhone using Tapatalk

So happy with it? Any noticeable power increase mid range? Sent from my iPhone using Tapatalk

I see Ulmer is having a sale on the muffler right now. Anyone using it and happy with it? Sent from my iPhone using Tapatalk

No option for shipping to Norway in your web shop... how much in shipping to Norway for a Viper muffler? Sent from my iPhone using Tapatalk

Me too. Works great. Sent from my iPhone using Tapatalk