A Constant Velocity Joints or CV joints are attached to each end of a drive shaft. The CV joints are needed to transfer the torque at a constant speed to steered wheels as well as to accommodate up and down motions of the suspension. You will find CV joints in all front-wheel drive cars. Many rear- and four-wheel drive cars and trucks have CV joints as well. The CV joint is packed with grease and protected by the rubber or plastic boot. Your CV Joints need to be properly maintained and serviced and Bryant Automotive has the experienced technicians for the job.