Features of EP Rear Spindle Bobbins for the BMW F 900 GS AdventureInjection-moulded nylon bobbin with aluminium coreHeld either side of the rear wheel by a spindle rodSimple to installFabricated from engineering grade materialsBobbin heads can be purchased separatelyWhat is Spindle Bobbin Crash Protection?Innovatively designed to protect the lower swing arm and brake calipers, EP Rear Spindle Bobbins for the F 900 GS Adventure are crafted from high quality materials. A robust nylon bobbin head sits over an aluminium core, fixed in place by a stainless steel spindle rod. The nylon is free to move over the aluminium which can reduce stress on the wheel.