2003 Yamaha Sx viper

What was your intended objective when you started the build?

To have a head turning reliable snow machine that has a more modern suspension package for my bad back (I had to have a fusion in my lower back 5 years ago)

What motivated you to start your project?

I love the reliability and reputation of a Yamaha 700 triple not to mention the sound 🙂

What was the most unique and creative thing you did to the sled?

Complete 136 inch mono skid from a 09 vector that I completely disassembled, powder coated and reassembled and mounted into my tunnel, also did a tom Hartman tunnel extension and finished it off with a extra gas jug to get me home 🙂

What are you most proud of?

Fit and finish and how well this skid works in the sled, handling is night and day and with my back not what it use to be I can still get out for a decent trip and not be crippled at the end of the day. Also since I have stretched it to 136 from 121 I can feel more comfortable taking it off trail without the fear of getting stuck.

What do other people say about your snowmobile?

They cant believe that its nearly 20 years old, It really looks like she belongs on the dealer show room floor and I’m very proud of her 🙂

5 Comments

  • Matt M says:

    Pretty slick sled. I always wanted one of these..bet it flies!

  • Seth Neely says:

    Hey, awesome sled! I have a blue Yamaha Sxviper that I am looking to get some better suspension on. First of all how did you get the front to sit higher, second how did you stretch the vector rear skid what all went into this process. Did you have to drill new holes in the tunnel? Does it overheat in the trials, and is it any more tippy than stock Thank you. Again I love the build.

  • Owen says:

    Does that suspension allow the sled to wheelie?

  • Seth Neely says:

    How did you mount the skid into the tunnel? How can I get the adapters? How did you strech the plastic covers for the side of the tunnel? Thanks

  • anonymous says:

    5

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Submitted by: David M

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Specifics

Classification: Mild
Make, Model & Year: Yamaha Sx viper 2003
Fondly known as: F7 killer
Time spent: 120
Snowmobile cost: 3000
Money spent: 3000
Engine: Yamaha 700 triple cylinder 2 stroke 145hp
Intake: Carburated with v force reids
Exhaust: Bender triple pipes
Drivetrain: 136 inch skid
Tunnel/Chassis Modifications: Tunnel extension
Suspension: Powder coated and fresh serviced
Brakes: Stock
Finish – Paint: Lots of powder coat
Accessories: Led powermadd hand guards

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