The Basics Behind CV Joint Replacement Services at Midas Total Car Care. Your vehicle’s CV joints connect to the drive axles, which connect the transmission to the wheels. The inner CV joint connects the transmission to the axle, and the outer joint connects the axle to the wheels. Because the CV joint links two rotating shafts in a fixed position, it must allow for a range of motion to compensate for road force while keeping the two shafts connected.