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Designed to be used with Tom's Rear Torsion Delete Arm Kit

Ski-Doo Gen 4 1.5 ZERO QS3 lightweight rear track shock kit

Ski-Doo Gen 4 1.5 ZERO QS3 lightweight rear track shock kit

Regular price $1,499.95 USD
Regular price Sale price $1,499.95 USD
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FOX Quick Switch (QS) coil shocks for trail/crossover applications provide the same performance advantage FOX is known for in the backcountry now. Ride harder with less fatigue without a compromise of durability. Experience a new sense of control on the snow due to velocity and position-sensitive damping technology. 

Quickly adjust the compression damping with FOX's QS3 to suit snow conditions. Three positions keep the gloves on and the adjustment simple. Focus on riding instead of counting clicks. 

FOX's position-sensitive damping technology, Rifle Bore, is now applied to the Factory Race Series rear track shock. Spiral grooves inside the shock allow the oil to flow around the main piston, reducing the damping force in the ride zone for a plush feel. The grooves terminate through the final 30% of the travel, forcing oil to flow through the main piston. The result is a significant increase in bottom-out resistance to cushion hard hits. 

Maximize your sled performance by bolting on FOX's new trail/crossover shocks equipped with Rifle Bore position-sensitive technology and QS3 adjustment. 

 

Specific fitment: The kit is compatible with Gen 4 Summit and Freeride models with 146" to 165" track lengths.

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Frequently Asked Questions

Will this suspension improve the overall performance of my snowmobile?
Yes. A properly tuned suspension improves both the performance of your snowmobile and your experience behind the handlebars.

You'll notice better control, a smoother ride, and a sled that stays more composed through rough terrain. Instead of being pitched around by every bump, the suspension does the work for you, making the machine feel more predictable, responsive, and easier to ride.

Many riders also say their sled feels noticeably lighter. Combined with reduced rider fatigue and less strain on your back, shoulders, and joints, you can ride longer with more confidence and less effort. Whether you're navigating technical terrain or putting in long days on the mountain, you'll spend less energy fighting your sled and more time enjoying the ride.
How do you custom tune the suspension?
Every rider is different, and your suspension should be too.

Rather than shipping a one-size-fits-all setup, we tune each suspension package based on factors such as your rider weight, riding style, terrain, and the specific make and model of your snowmobile. Whether you spend your time climbing steep technical lines, carving through powder, or covering long miles on mixed terrain, we build a setup designed to match how you ride.

Our goal is to create a suspension that keeps the sled composed, improves control, and delivers a smoother ride with less rider fatigue. A properly tuned suspension allows the shocks to do the work, so you spend less energy absorbing bumps and more time riding with confidence.

If you're not sure what setup is right for you, we'll walk you through the options and recommend the package that best fits your riding style and performance goals.
Why should I buy my snowmobile suspension from Tom's?
At Tom's Shocks, we don't just sell suspension, we build and tune it specifically for the way real riders use their snowmobiles.

Every suspension package is carefully assembled and tuned to deliver a smoother, more controlled ride that reduces rider fatigue and improves confidence in challenging terrain. We focus on performance you can actually feel, not just numbers on a spec sheet.

With more than 30 years of suspension tuning experience, we've spent decades refining setups that help riders spend less energy fighting their sled and more time enjoying the ride. We stand behind every package we sell and are committed to helping you choose the right setup for your riding style, terrain, and goals.

When you buy from Tom's, you're not just getting premium components, you're getting proven expertise, personalized recommendations, and a suspension system built to help you get the most out of every ride.