Yakima Straightshot Hitch ExtenderYakima's Straight Shot is a heavy duty extender for your 2" square receiver so you can clear your spare tyre. Adding 7. 25" (184mm) should give you the additional room you need to mount almost any bike rack to a vehicle with a spare tyre on the rear door. It secures to any 2" square hitch receiver using a threaded pin and can be fitted with a pin lock (not included).