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POLARIS SNOWMOBILE

CENTRE D'AIDE

10/27/2020
Customizing Your Suspension Setup on Matryx Models

The following information applies to model year 2021 and newer INDY VR1, INDY XC Launch Edition and Switchback Assault 146 models featuring the Matryx platform.

Your Polaris snowmobile’s suspension can be adjusted to fit your individual riding style. For full details on adjustments, see your Owner’s Manual

The front and rear suspensions of your Polaris Matryx snowmobile are easy to adjust. Remember these three steps:

1. Ride your snowmobile. Ride the snowmobile in various terrain to fully experience the existing suspension settings before making any adjustments. 

2. Adjust the rear spring to tune vehicle balance. After riding, you should be able to determine if the snowmobile needs more or less transfer. For more transfer, decrease the rear track spring preload by turning the shock clockwise. For less transfer, increase the rear track spring preload by turning the shock counterclockwise. If you prefer lighter steering on your snowmobile, decrease the rear track spring preload or increase the front track shock spring preload.

3. Adjust the shock clickers (if equipped) for ride quality. For models equipped with monotube shocks, always adjust the rear track shock spring preload to enhance bottoming resistance. 

For models with shock clickers, you can adjust the clickers to control bottoming and adjust ride comfort.  Turn a clicker counterclockwise to decrease damping for a softer ride. Turn a clicker clockwise to increase damping for a stiffer ride and less bottoming. Always adjust the clicker at least one click below full stiff (full clockwise), or shock damage will occur. 

Test ride the snowmobile and continue making spring and clicker adjustments until you achieve the perfect ride. 

Shock Locations

Shock locations

Your snowmobile's suspension includes a rear track shock (1), a front track shock (2) and front IFS shocks (3).

Shock Compression Damping
The primary adjustment for overall vehicle balance is torsion spring preload. Perform this adjustment first. After adjusting torsion spring preload to your satisfaction, compression damping adjustments can be made to control ride quality and bottoming resistance.

Compression damping can be adjusted at the front suspension and at the front and rear track shock. Make adjustments in two-click increments and then test ride. When adjusting the front suspension, always adjust both clickers equally.

To stop the bottoming of the front or rear suspension (and create a stiffer ride), rotate the clicker(s) clockwise two clicks (as viewed from the top of the clicker) and then test ride. Repeat the adjustment until the bottoming stops and the desired ride quality is achieved.

For a more plush ride at the front or rear suspension, rotate the clicker(s) counterclockwise two clicks and then test ride. Repeat the adjustment until the desired ride quality is achieved.

Torsion Spring Adjustments

Torsion spring adjustment

To adjust rear torsion spring preload, rotate the three-position cam (1) with the engine spark plug tool. Adjustment is easiest when the cam is rotated from low to medium and then to high. Rotating directly from low to high will require significantly more effort. Different rate torsion springs are available if a firmer ride is desired. See your Polaris Dealer for more information. 

Adding a passenger seat or additional cargo may affect the handling of your snowmobile and require a spring rate change. 

TORSION SPRING SETTING RECOMMENDED USAGE
Low Rider(s) and gear = 140 to 180 pounds
If less than 140, use the optional spring chart below for softer springs
Medium Rider(s) and gear = 180 to 200 lbs
High Rider(s) and gear = 220 to 260 lbs
If above 260, use the optional spring chart below for heavier springs.

Optional Spring Kits

KIT NUMBER SPRING TYPE DESCRIPTION FITMENT (BY TRACK LENGTH)
2884973  Spring, Torsion  Light Duty 129/137
2884974  Spring, Torsion  Heavy Duty 129/137
2884975  Spring, Torsion   Extra Heavy Duty  129/137
2884976
(Switchback Assault)
 Spring, Torsion  Light Duty 144/146
2884977
(Switchback Assault)

Spring, Torsion 

Heavy Duty 144/146

Front Suspension (IFS) Shock Adjustment
Always perform shock spring preload adjustments with the weight of the vehicle removed from the shock and with the shock at full extension.

To reset IFS clickers, rotate the clicker to full stiff, then back off the same number of clicks for each shock.

I F S adjustment

IFS Shock Spring Settings
The factory installed length of the IFS Shock Spring is equal to the maximum installed free length. 

FACTORY SPRING FACTORY
INSTALLED LENGTH 
 MINIMUM INSTALLED LENGTH  
 Matryx INDY VR1 10.75 inches (27.3 cm) 9.75 in (24.8 cm)
 Matryx INDY XC 10.75 in (27.3 cm) 9.75 in (24.8 cm)
 Matryx Switchback Assault 9.75 in (24.8 cm) 8.75 in (22.2 cm)

IFS Remote Reservoir Factory Clicker Settings

MODEL CLICKER SETTING (FROM FULL STIFF)
 Matryx INDY VR1 5
 Matryx INDY XC 5
 Matryx Switchback Assault 6

Front Track Shock Spring Settings
Factory settings, combined with user adjustments to the rear track shock spring (RTSS), should be all that is necessary to provide the best riding experience for most riders. The primary adjustment for overall vehicle balance is the RTSS preload. Perform this adjustment first.

R T S S preload

Always perform shock spring preload adjustments with the weight of the vehicle removed from the shock and with the shock at full extension. Never adjust spring preload to an installed length longer than the factory length or shorter than the minimum length shown in the following chart. Damage to the suspension could result. When decreasing preload, make sure at least two turns of preload are holding the retainer against the spring.

The front track shock is measured from the bottom of the spring to the top of the body cap.

Front Track Shock Factory Install Length

FACTORY SPRING MAXIMUM
INSTALLED LENGTH
MINIMUM
INSTALLED LENGTH
 Matryx INDY VR1 2.25 inches (5.7 cm) 1.75 in (4.5 cm)
 Matryx INDY XC 1.62 in (4.1 cm) 1.38 in (3.5 cm)
 Matryx Switchback Assault 1.75 in (4.5 cm) 1.75 in (4.5 cm)

Rear Track Shock Spring Settings
For riders who weigh 160 to 220 pounds (73 to 100 kg), test ride at factory settings. Then make fine-tuning adjustments. 

To reset clickers, rotate the clicker to full stiff, then back off the same number of clicks for each shock.

The rear track shock of your Matryx snowmobile is equipped with a shock clicker. The clicker will increase or decrease compression damping when adjusted. 

  • For a stiffer ride, turn the clicker clockwise to increase damping.
  • For a softer ride, turn the clicker counterclockwise to decrease damping.

Rear track shoick springs

Rear Track Shock Factory Clicker Settings

MODEL CLICKER SETTING (FROM FULL STIFF)
 INDY VR1 6
 INDY XC 5
 Switchback Assault 6

Rear Torsion Spring Kits
All AXYS and Matryx snowmobiles are equipped with standard stock rear track suspension springs. To customize your ride, rear torsion spring kits can be installed to accommodate your particular total rider weight range.

KIT DESCRIPTION PART NUMBER WEIGHT RANGE - LBS (KG)
 Factory-Installed Stock Spring 7045190, 7045191 140 to 260 pounds
(64 to 118 kg)

 Factory-Installed Stock Spring
 (144/146)

 7041629, 7041630  140 to 260 lb (64 to 118 kg)
 129/137 Light Duty 2884973 0 to 180 lb (0 to 82 kg)
 144/146 Light Duty 2884974 0 to 180 lb (0 to 82 kg)
 129/137 Heavy Duty 2884975 220 to 350 lb (100 to 159 kg)
 144/146 Heavy Duty 2884976 220 to 350 lb (100 to 159 kg)
 129/137 Extra Heavy Duty 2884977 310 to 425 lb (141 to 193 kg)

Rear Rear Scissor Stop (If Equipped)

Moving the RRSS to a higher position will have the following effects on the suspension: 

  • Reduced weight transfer
  • Improved chatter bump ride
  • Improved cornering performance
  • Increased load carrying capacity (2-up riding) 

Weight Transfer During Acceleration
The preferred method for controlling weight transfer during acceleration is by adjusting the rear rear scissor stop (RRSS). The factory setting is the best for most trail riding conditions. 

R R S S

To decrease weight transfer under acceleration for improved cornering, rotate the RRSS to a higher position. 

To increase weight transfer or ski lift during acceleration, rotate the RRSS to a lower position. 

When adjusting for weight transfer, both the left and the right rear rear scissor stop adjuster blocks must be adjusted to the same position. 

R R S S settings

R R S S settings

Your Polaris Dealer can help you with the initial setup and additional setup instructions to help you achieve your optimum ride. A scissor stop tool is also available from your dealer.

To find a Polaris Dealer near you, use the Dealer Locator.
For additional track maintenance and adjustment procedures, consult your Owner’s Manual.
To find diagrams and replacement part numbers, use the online parts catalog.