Ridetech 12127099 1979-1993 Mustang Indep. Rear Suspension System

Fox Body Mustang IRS Suspension system. It’s no secret that independent rear suspensions (IRS) are superior in almost every way over a stick axle. The biggest concerns are cost and ease of installation. This bolt-on Ridetech IRS Conversion is specifically designed for the 1979-1993 Fox Body Mustang and provides maximum performance, high strength and OE reliability utilizing 2015-2023 Mustang driveline/brake components. For an unstoppable combination, this IRS system was designed to work alongside our recently released SLA (Short Long Arm) front suspension assembly. That system exchanges the OEM MacPherson strut assembly out for a superior double wishbone design, drastically enhancing front end grip and performance.

• High quality, no compromises manufacturing
• 100% Bolt-in design requires minimal modifications
• Lowers stance approximately 2”
• Reduces center of gravity without adversely affecting suspension geometry
• Reduced upsprung weight improves ride quality
• Durable powdercoat finish
• Great looks & corrosion resistance
• Low roll center (5")
• 1 degree of camber gain and zero bump steer inspires confident cornering
• 50% anti-squat provides excellent traction
• Delrin control arm bushings eliminate deflection
• No bushing lube required
• Retains factory track width
• Spindles include Moog S550 Mustang rear hubs for maximum strength, consistent braking & reduced maintenance

Compatible with mini-tubs (cradle attaches to the inside of the frame rails). Modular design, works with Ridetech Coil-Overs or ShockWaves (sold separately). Designed for 1979-1993 Ford Mustang.

• Uses S550 (2015+) Mustang differential (not included)
• Uses S550 (2015+) Mustang axles, 4? shorter than stock (not included)
• Allows direct bolt-on of both stock SN95 Cobra (1999-2004) or S550 (2015+) rear OE or aftermarket brakes via Ridetech caliper brackets
• Works with 99-04 Cobra cat-back exhaust
• Requires shortened driveshaft and pinion flange to U-joint adapter (Sonnax part # T35-ALFY-09 or T35-ALFY-10)
• Works with Ridetech Coilovers or Shockwaves, sold separately
• Works with all subframe connectors