Purchased a tricked out Trygstad motor, new reeds, boots, and a clutch kit from I backshift. Performance was great, until the pto snapped at about 130 miles. E- mailed them on the same email chain I purchased the motor with, attached pictures where you can see the oxidization from the...

I was wondering how many fellow doo talkers have installed the 872 etec big bore and run them on the flat lands. How is power fuel economy, reliability,belt life etc. Please give me input. I will be trail riding it on the flats.

Item: 2011 Summit TMS 872 154" Category: Sled Year: 2011 Location: Iowa Price: SOLD 2011 Summit PTek Trygstad 872 High Compression Big Bore 154". 2122 miles all from trips out west. Sled is in very good condition and needs nothing. With the 872 engine and the clutching to match this sled has a...

Trygstad Motorsports is taking applications for race sponsorship for the RMSHA Hillclimb Circuit and others. We have been involved in the Western Hillclimb Circuit for over 13 years with the Ski Doo Hillclimb Team and together with the talented line up of racers have posted over 400 top 1-3...

Have a warm running and fading XM-XS? We have been building and selling our coolant manifold for 7 years now and is an included (required) part with our exclusive TMS 872 Builds! Tons of satisfied customers installing these on the standard bore 800 R and Etecs. An Exclusive developed and...

Looking to upgrade your well used 800 R or Etec as we have complete new 2017 version long Blocks in our exclusive TMS 872 in stock, We have a trade in program for customers looking for a new upgraded engine without concerns about high mileage problems (cranks). Give us a call for this great...

Back on again the Summer sale event on the Proven TMS 872 Big Bore for the 800 Etec and R vehicles. We are in our 8th season building the best big bore in the game for the 800 Etec Engine package, 11 years on the R engine package. Give us a call or email for more information and pricing to...

Check out Snowest magazines 2016 project sled of the year "Steel Rain" featuring TMS 872 Big Bore!

Nice article on the SnoWest project sled Steel Rain the TMS 872.

This weekend Saturday 9-24th is the Grass Drag and swap meet in Douglas Minnesota just NW of Rochester, Great event and huge turnout for vendors and swap is getting larger every year. Trygstad Motorsports will be there with several of our shop Summits and also show specials will be available...

Stop by Vendor space FB1A Saturday at HayDays and see our complete product line and what we have to offer for the Renegade also. :smile_old: 2017 will be our 8th Season building the Etec Big Bore. Renegade 872 and our Shop 872 Summits will be on display along with a few new items. Dave...

Less than 2 weeks to the 50th annual Haydays event. Trygstad Motorsports will be in space FB1A just inside gate #2 and by Levis jump site that takes place Saturday afternoon. Stop by and see our complete product line of Rotax Engine Products we produce and also our fleet of Summit 872 Builds...

Summer is here- Sale on our 872 Kits for both the Etec 800 2011-2017 and the 800R 2007-2016 is now on through Haydays Event. Give us a call for all information and pricing on our line of products, Looking for a installing Ski/Doo BRP dealer? We have over 100 of them selling and installing our...

Trygstad Motorsports 872 Renegade 2013 XS began life as an 872 now has 4 winters on this Shop Test Mule being utilized as our testing base for the many different versions of the 872 build, porting designs, piston design changes, compression ratios , our exclusive coolant manifold designs and...

Trygstad Motorsports 872 Renegade 2013 XS began life as an 872 now has 4 winters on this Shop Test Mule being utilized as our testing base for the many different versions of the 872 build, porting designs, piston design changes, compression ratios , our exclusive coolant manifold designs and...

TMS will be attending the 40th Annual World Championship Hillclimb event with a trailer-vendor space on March 24-27th showcasing our Proven line of Products for the Ski Doo Rotax engine platform. We will have on display the SnoWest Sled build of the Year the TMS 872 163 T3 along with our Shop...

SnoWest Magazine just announced that the SnoWest Sled buildup of the Season will be a 2016 163" T3 with a TMS 872 Big Bore kit installed with a few other select Mods being done also. We will be personally involved in this featured sled project and will have many more updates and rider reviews...