J&M Rear Weight Jack Adjustable Lower Control Arms for 1979-1998 Ford Mustang - Street/Race (23958)

1979-1998 Ford Mustang Rear Weight Jack Lower Control Arms - Street/Race

Part # 23958 | Made in the USA | Lifetime warranty for the original owner

Improved suspension control • Predictable handling • Performance street and track use • Powder coat finish options

Adjustable weight-jack arms only work as well as the suspension mounting them. Flex-prone factory hardware lets the arm twist under load, making weight-transfer tuning inconsistent from run to run.

J&M tested this design against a fixture that simulated factory control-arm mounting, measuring the force needed to make the arm articulate (twist) in the mounts. The tubular construction and premium bearing spec resisted deflection far beyond stock, giving a rigid, predictable foundation for dialing in weight transfer.

Key Features & Benefits

• Built-in spring perch weight jack - Fine-tune rear weight transfer and ride height
• 3-piece Poly-Ball bushing on chassis side - Bind-free articulation during body roll
• Chrome-moly spherical bearing on axle side - Reduced deflection at the axle mount
• CNC laser-cut, pulse-welded 2-inch round steel tubing
• Street/race configuration for high-performance solid-axle Mustangs
• Powder coat finish options for corrosion resistance

Why Choose J&M

• Street-smart bushing strategy - Performance control without the bind common in basic polyurethane upgrades
• Made in the USA - Designed and manufactured by J&M Products
• Premium materials and construction - Built to the hardware and fabrication standards serious performance applications require
• Lifetime warranty - Backed by J&M for the original owner on qualifying components

Upgrade with confidence and feel the difference where the tire meets the road. Select your powder coat finish above and add to cart.