Polaris 2000 Universal Snow Owner's Safety And Maintenance Manual page 133

SUSPENSION
Front Rear Scissor Stop (FRSS)
The purpose of the front rear scissor stop (FRSS) is to control the bump attitude
of the rear suspension. As the front torque arm (FTA) hits the bump, it forces the
rear scissor to collapse a predetermined amount, depending on the FRSS block
position.
This accomplishes two important things, it allows a lighter spring rate on the FTA
because it can borrow spring rate from the rear torsion springs; and it prepares the
rear portion of the suspension for the bump.
The FRSS is made of a resilient material allowing smooth action and preventing
any suspension component damage.
This unique feature is applied to the Xtra-10 and Xtra-12 rear suspensions. Pat-
ents are pending.
Front Torque
Arm (FTA)
FRSS with short (low) leg to rear. Note the FTA goes down lower
before rear scissor begins to collapse.
Front Torque
Arm (FTA)
FRSS with long (high) leg to rear. Note this forces rear scissor to
collapse with less FTA movement than when in short position.
NOTE: General representation only. Your model may differ.
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Rear Scissor
Rear Scissor