Mustang S550 Lightweight 9-inch Drag Race IRS 2015

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S550 MUSTANG 9-INCH LIGHTWEIGHT IRS (WR-15-REARSUBFRM) 2015-CURRENT

Lightweight 9-inch S550 Mustang Race IRS 2015 - CURRENT

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Our Price: $12,500.00

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Product Code: WR-15-REARSUBFRM

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S550 Mustang Drag Race Independent Rear Suspension (IRS)

After years of testing, Watson Racing brings you its much-anticipated, S550 Mustang HEAVY DUTY & LIGHT WEIGHT, 9-inch Independent Rear Suspension System. Designed for the serious Drag racer that doesn’t want to cut up the back of their Mustang S550 to install a solid rear axle.

Proven and validated in Watson Racing's 2015 S550 Mustang street/strip Drag Race car. As a result, Watson's S550 was the First fastest street-legal S550 on the planet. Running consistent 8.50’s with over 1000-HP. Watson's S550 Mustang is seen here on the Watson Racing YouTube Page. This race car hasn’t just made a few passes - it competes regularly in numerous NMRA and NMCA True Street Drag race competitions around the country!

Features
The features and benefits of our Mustang S550 IRS Drag Race System are numerous!

- Equal-length double A-arm design with adjustable Toe and Camber. Geometry designed specifically for drag racing means launching HARD and STRAIGHT.

- LIGHTWEIGHT - 100-percent Tubular Chromoly construction is strong and saves weight. 110 pounds weight savings over stock!

- Subframe points using all factory mounting hardware, with very little modification required for installation.

- Features Wilwood inboard disc brakes, (brake lines not included) reducing unsprung weight while allowing clearance to run an off-the-shelf 15x10 drag race wheel (4.75 bolt circle).

- We proudly partnered with G-Force Engineering on the custom 35-spline axles, included with the Watson IRS kit.

- Billet aluminum spindles provide incredible strength and reduced weight.

- Highest quality components throughout. Aurora Bearing rod ends, HOWE Precision ball voints (re-buildable), Wilwood brakes, and G-Force axles, combined with double-shear design and high-strength Chromoly mean this system was meant to last.

- Fabricated 9-inch Ford differential housing offers endless gear ratio options and makes center section changes a breeze. 9-inch gear set/differential and center section- not included.

- Recommended Coilover; Strange STR-S5005A - not included
- Recommended Spring; SUM-72-12-350 (350lb) - not included

** Shipping is by Freight -
Call our sales team for quote or any questions you may have: 734.759.0555

S550 MUSTANG BATTERY RELOCATION KIT (WR-15-BTRYRELOKIT) 2015-CURRENT

K-MEMBER TIE DOWNS - TOW RINGS (WR-KMEMBERTIEDOWN) 2005-2014

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