To the Nines
Watson Racing developed a new 9-inch IRS for straight-line S550s
By Steve Turner
Photos courtesy of Watson Racing
From the moment it was announced that the 2015 Mustang would feature an independent rear suspension, many of us started to fret about how the new pony car would handle drag strip launches. As it turns out, the cars have performed quite well with moderately enhanced power levels, but as we head into the first full racing season since the S550s hit the streets, some cars might need a more durable option, and that’s what Watson Racing has created.
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