J&M 2011 Mustang STREET Lower Control Arms (Black)

Street: Poly Bushings on Both Ends

The control arm bushings found in the Mustang automobiles can have a significant impact on the vehicles ride, comfort, handling, acceleration, noise and vibration. When the car leans (i.e., rolls) in a turn, one side of the chassis moves upward relative to the rear axle, the other side moves downward, and the control arms must twist to allow for the axle to articulate. This causes the control arm bushings to bind. If this bind becomes excessive, it will raise the rear wheel rate and produce sudden, uncontrolled, undesirable changes in handling (e.g., snap oversteer).

Ford minimizes this suspension bind by using compliant rubber bushings in both lower control arms. These relatively "soft" bushings help accommodate the necessary motion of the control arms during body roll. However, the rubber bushings do not provide much in the way of forward and aft support, which can cause wheel hop during hard acceleration and braking.

It has become common practice to replace the stock rubber control arm bushings with solid or two piece polyurethane bushings to resolve the shortcomings of the soft rubber bushings. Hard polyurethane bushings eliminate wheel hop, reduce axle deflection, and improve rear straight line grip. However, the downside of common aftermarket bushings such as delrin, steel, stiffer rubber, solid or two piece polyurethane bushings is they prevent the necessary movement of the control arms during body roll, which in turn produces significant binding in the suspension when the vehicle is cornering. The polyurethane bushings also place unnecessary high stresses on the torque boxes, which are the attachment points for the control arms to the chassis. Standard aftermarket control arms do not allow for rotation of the control arm during cornering because of the stiffness of the bushings.

The Solution:
J&M Products designed and built a tubular lower control arm which will eliminate the unwanted uncontrolled control arm flex. Round tubing is harder to work with but has many other advantages over square or rectangular tubing. It is stronger in bending, torsion, and also lighter than square or rectangular tubing.

J&M Products then designed the first offset lower control arm and solved the shortcomings of the factory rubber and other aftermarket polyurethane and stiffer rubber bushings. J&M Products accomplished this with their Patent Pending 3 piece Poly-Ball bushing combination. By spending countless hours looking and dissecting the geometry and the need of the rear suspension they have come out with bind-free bushings set up. J&M Products incorporates a very hard inner polyurethane ball which is surrounded by soft socket outer cups. This combination allows the bushing to articulate like a spherical bearing during cornering but the hard inner ball does not allow the bushing to deflect during acceleration giving you great traction during acceleration like solid bushings but remains completely bind free during cornering for great predictable traction in the corners.Learn More

J&M 2011 Mustang STREET Lower Control Arms (Black)

Street: Poly Bushings on Both Ends

The control arm bushings found in the Mustang automobiles can have a significant impact on the vehicles ride, comfort, handling, acceleration, noise and vibration. When the car leans (i.e., rolls) in a turn, one side of the chassis moves upward relative to the rear axle, the other side moves downward, and the control arms must twist to allow for the axle to articulate. This causes the control arm bushings to bind. If this bind becomes excessive, it will raise the rear wheel rate and produce sudden, uncontrolled, undesirable changes in handling (e.g., snap oversteer).

Ford minimizes this suspension bind by using compliant rubber bushings in both lower control arms. These relatively "soft" bushings help accommodate the necessary motion of the control arms during body roll. However, the rubber bushings do not provide much in the way of forward and aft support, which can cause wheel hop during hard acceleration and braking.

It has become common practice to replace the stock rubber control arm bushings with solid or two piece polyurethane bushings to resolve the shortcomings of the soft rubber bushings. Hard polyurethane bushings eliminate wheel hop, reduce axle deflection, and improve rear straight line grip. However, the downside of common aftermarket bushings such as delrin, steel, stiffer rubber, solid or two piece polyurethane bushings is they prevent the necessary movement of the control arms during body roll, which in turn produces significant binding in the suspension when the vehicle is cornering. The polyurethane bushings also place unnecessary high stresses on the torque boxes, which are the attachment points for the control arms to the chassis. Standard aftermarket control arms do not allow for rotation of the control arm during cornering because of the stiffness of the bushings.

The Solution:
J&M Products designed and built a tubular lower control arm which will eliminate the unwanted uncontrolled control arm flex. Round tubing is harder to work with but has many other advantages over square or rectangular tubing. It is stronger in bending, torsion, and also lighter than square or rectangular tubing.

J&M Products then designed the first offset lower control arm and solved the shortcomings of the factory rubber and other aftermarket polyurethane and stiffer rubber bushings. J&M Products accomplished this with their Patent Pending 3 piece Poly-Ball bushing combination. By spending countless hours looking and dissecting the geometry and the need of the rear suspension they have come out with bind-free bushings set up. J&M Products incorporates a very hard inner polyurethane ball which is surrounded by soft socket outer cups. This combination allows the bushing to articulate like a spherical bearing during cornering but the hard inner ball does not allow the bushing to deflect during acceleration giving you great traction during acceleration like solid bushings but remains completely bind free during cornering for great predictable traction in the corners.Learn More

Replace those weak, factory stamped lower control arms with J&M Products extreme duty tubular adjustable arms. These are a direct bolt-on replacement that minimize wheel hop, improve cornering, lowers ET's and greatly helps your track consistency. The chrome-moly heat treated spherical rod end allows your rear suspen- sion to be bind free which makes these a great upgrade for both your track and auto cross driven car. We designed these to have the polyurethane bushings bolted to the cars chassis for a quiet comfortable operation. J&M Producs control arms are constructed form U.S. made DOM mild steel tubing 1.250” OD x .120” wall, high strength steel threaded tube adaptors, completely CNC machined and fully pulse welded for outstanding strength. J&M control arms feature Energy Suspension® polyurethane bushings, zinc plated steel sleeves and “on-car” grease able grease fittings. Adjustments are easily made with the high quality Chrome-Moly Kevlar/ Teflon lined spherical rod ends for a quiet bind free performance.

Product Features:
1.25” x 0.120” DOM Mild Steel Tubing
High Strength Steel Threaded Tube Adaptor
¾” Hard Chrome Plated, Chrome-Moly Teflon/Kevlar Self Lubricating Race Rod End
High Frequency Pulse Welded Construction with Rosette Welds on the Bung Side for Extra Strength
CNC Machined Offset Step Bushings with Proper 14MM ID for use with Factory Bolt
Adjustable While On The Car
Energy Suspension Polyurethane Grease Able Bushings
Designed for Proper Use of the OEM Hardware
Installed Grease Fittings for on the Car Maintenance
Standard Red or Black Powder Coating for a Great Looking Long Lasting Finish
Improves Responsiveness and Control
MADE IN THE USA!Learn More