J&M Bump Steer Kit (2004-2014 Mustang)

J&M Products/hotpart.com has designed and manufactured a bump steer kit for the 2005-2014 Mustangs with an Aerospace 6061-T6511 aluminum body. The spherical rod end bodies are manufactured from heat treated chrome moly high strength alloy steel, then black oxide coated for a long lasting corrosion resistance.

The ball in the body is PTFE lined 52100 steel and hard chrome plated rated at a static radial load of 18,000 lbs.The tapered stud is machined from forged high strength steel and heat treated, the threads on the stud are rolled not cut after the heat treating process to assure strength and concentricity.

Bump steer can become a problem when cars are modified by lowering or lifting, when a lowering spring has been installed for a lower performance orientated ride, or if the vehicle is heavily loaded. When a car is lowered or lifted, the wheels' toe setting changes and can cause uneven and premature tire wear.

Explanation of Bump Steer

When a car is lowered or lifted, it will have to be re-aligned to avoid excessive tire wear. This is accomplished through adjustment of the steering tie rod length. After the tie rod lengths are changed, bump steer values will also change. In some cases, the car will have less toe change, this can make the car exhibit less roll understeer and therefore feel more "twitchy" during a turn. Other vehicles after lowering will exhibit an increase in toe change compared to stock, this results in the car feeling very "twitchy" on straight, bumpy roads, and at the same time feeling unwilling to turn requiring more driver input than normal due to an increase in roll understeer.

When a vehicle is heavily loaded, it lowers the ride height. Typically cars are loaded by having heavy loads in the trunk, many passengers or towing a trailer, thus mainly affecting the rear wheels. When a car has been heavily loaded (if it does not have a live rear axle), the suspension will compress greatly in order to support the load resulting in an extreme amount of toe in on the rear wheels. This causes rapid tire wear, can cause the car to follow cracks in the road and can cause tire temperatures to rise higher than normal due to an increase in friction. Negative Camber will often be greatly increased as well. This results in very heavy inner tire wear on the rear wheels of a car that is heavily loaded or towing. One reason that most trucks have live axle rear suspensions is because it completely avoids toe and camber changes with a load. Cars with multi-link rear suspension should have an alignment while loaded if they are going to be operated under heavy loads for extended periods.

Bump Steer Kit Features and Benefits:

• Fits 2005-2014 Mustangs
• Correct taper on pin, no need to increase taper bore size or use a bushing
• A must for lowered cars
• Replaces factory tie rod ends with spherical rod ends for precise steering control
• Aerospace 6061-T6511 aluminum adjusting collar
• Helps eliminate Bump Steer, prevents uneven tire wear and unpredictable steering
• Rod end bodies are constructed of heat treated chrome moly alloy steel and clear zinc coating
• Mil-A-8625 Type II aluminum collar is black anodized finish for corrosion resistance
• Threads are rolled (not cut) after the heat treat process for concentricity and strength