Rock Shox SID Dual Air Rear Shock 6.5 x 1.5 Stroke. Here is a used Rock Shox SID Dual Air rear shock, 6.5 mount spacing with a 1.5 stroke. The shock has sat for several years and I do not have a service historyboth air chambers hold air and there are no oil leaks.One light scratch near the mount end of the slider, shown in photos. _gsrx_vers_1292 GS 8.3.6 (1292). The item "Rock Shox SID Dual Air Rear Shock 6.5 x 1.5 Stroke" is in sale since Saturday, November 13, 2021. This item is in the category "Sporting Goods\Cycling\Bicycle Components & Parts\Rear Shocks". The seller is "matt1400g3" and is located in Fort Collins, Colorado. This item can be shipped to United States, all countries in Europe, Canada, Japan, Australia.