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IMPORTANT

The Owner's Manual for this vehicle contains warnings, instructions and other information you must read and fully understand before safely riding or performing maintenance on this vehicle. Always follow the warnings and instructions in Owner's Manual.

Click the link above for the Table Of Contents, or download a full PDF of the Owner Manual in the Owner Support area of Polaris.com.

Initial Spring Preload Setting (Sag Method)

To set up the rear suspension torsion spring preload, measure the distance between the ground and rear bumper. This is measurement X.

Take the first measurement with no rider and with the rear suspension at full extension.

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The rear bumper may need to be lifted upward slightly to fully extend the suspension.

Next, have the rider drop down hard on the seat and bounce up and down several times, collapsing the rear suspension. With the rider seated, measure the distance between the ground and the rear bumper at the exact location used for measurement X. This is measurement Y.

To determine sag, commonly referred to as ride-in, subtract measurement Y from X (sag=X-Y). If the measured sag is incorrect, adjust the FRA position and/or rear torsion spring preload.
Suspension Recommended Sag Adjustment See Page
INDY 121 3-4 inches (7.5-10 cm) Torsion Spring Preload Torsion Spring Preload (121)
INDY 155 4 inches (10 cm) Torsion Spring Preload Torsion Spring Preload (155)
INDY EVO 1.5-2.5 inches (3.8-6.3 cm) Torsion Spring Preload Torsion Spring Preload (121)
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This is only an initial setup, and final spring preload may vary based on rider preference and riding conditions. Accessory springs with a higher load rating are available for some models. Please see your dealer for availability.
Parent topic: Rear Suspension Adjustments