12127099 | Ridetech Independent Rear Suspension System For Ford Mustang

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.

FEATURES

• Made in the USA | High quality, no compromises manufacturing
• 100% Bolt-in design requires minimal modifications | Install with a friend over a weekend
• 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. | Improved suspension geometry over OE suspension design and much more enjoyable to drive
• 50% anti-squat provides excellent traction
• Delrin control arm bushings eliminate deflection. (No wheel hop!) | No noise. No bushing lube required.
• Retains factory track width
• Compatible with mini-tubs (cradle attaches to the inside of the frame rails)
• Modular design | Works with Ridetech Coil-overs or ShockWaves® (sold separately) | HQ & TQ (Triple Adjustable) versions available
• Spindles include Moog S550 Mustang rear hubs for maximum strength, consistent braking & reduced maintenance

Fitment Information

• Uses S550 (2015+) Mustang differential (not included). New units can be purchased from Ford Performance. Takeout units are also available.
• Uses S550 (2015+) Mustang axles, 4″ shorter than stock (not included). Standard strength are available from Ridetech. Contact G-Force or The Driveshaft Shop for higher horse variants.
• 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. 

Optional Add-Ons

• Rear HQ Series Coil-Overs: Rebound-adjustable monotube coilovers for static performance. Part# 12126410

• Rear HQ Series ShockWaves: Rebound-adjustable air springs for an adjustable, low stance. Part# 21130101

• Rear CV Axle Shaft Set: Shortened half-shafts that adapt an S550 differential to Fox Body width. Part# 12129599

• Rear S550/S650 Caliper Brackets: Mounts 2015+ Mustang rear brake calipers to the spindles. Part# 12129511

• Rear SN95 Mustang Cobra Caliper Brackets: Mounts 1999–2004 Cobra rear brake calipers to the spindles. Part# 12129510

• Rear Adjustable Rate Sway Bar: Mounts to the cradle to reduce body roll with tunable stiffness. Part# 12129102