Ford Mustang Forum - View Single Post - 2013 GT Lowering springs rear only?
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post #4 of (permalink) Old 06-12-2014
PONY Member
Fabulozzz's Avatar
Joined: Jul 2011
Location: Montreal
Posts: 381
more info about the 55D Spring Kit from Route 66 SpeedShop

2011+ Mustang - Route 66 Speed Shop

i installed those on my V6 and they ride great. The spring rate is similar to the Brembo Package springs, but you get about inch drop from them. I got about 3/8 inch on my V6, but my car has the base interior and no bells and whistles

Canadian 2012 V6, MT, Perf.White Pony Package (3.31 gears). Koni Sport Shocks & Struts. Steeda Sport Springs w/HD Mounts, Route 66 SpeedShop 55D rear spring kit. Boss 302 Strut Tower Brace. BMR Adj PHB. BFG G-Force Sport Comp2. Pioneer TS-D6802R Front SPeakers, Clarion 80W/Ch Amp. JL Audio 8 Inch Sub And 175W Amp. GT500 Steering Wheel. 2012+ Tilting Headrests
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