SP1 Rear Torsion Springs for Ski-Doo 137" R-Motion Rear suspensions 2013-2020. Replace BRP 503193159 & 503193158Ski-Doo Rear Torsion Springs- 137" R-MotionSKU: 121699-121698 $80.90 Regular Price$72.81Sale PriceQuantity*Add to CartBuy Now