This item is in the category eBay Motors\Parts & Accessories\Snowmobile Parts\Shocks & Suspension. The seller is rrcycle and is located in this country US. 1999 ski-doo summit 600 rear back frame skid suspension torque arm 503170700.1999 Ski-Doo Summit 600 136 Inch Rear Back Frame Skid Suspension 503170700 This rear suspension is in great condition with minor wear.