Suspension Coupling - Polaris 550 Indy Owner's Manual

THE PERFECT FIT
Rear Suspension Adjustments

Suspension Coupling

On all POLARIS snowmobile rear suspensions, there are two torque
arms that control the movement of the rail beam. Prior to the advent of
suspension coupling, these torque arms could move independently of
each other. Rear suspension coupling links the movement of the front
and rear torque arms to each other.
There are two types of rear suspension coupling.
Front To Rear Coupling and the Front Rear Scissor Stop
(FRSS)
The front rear scissor stop (FRSS) couples the movement of the front
torque arm with the rear torque arm and limits the amount of
independence between the movement of the front torque arm and the
rear torque arm.
When hitting a bump, the front torque arm starts to compress. The FRSS
links that movement to the rear torque arm, causing it to compress and
raise the rear suspension up as one, allowing the suspension to hit the
bump only once and reducing kickback.
The factory setting is usually adequate for all riders and conditions.
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