2018 Jack Hammer THUMP

[Philipe1]

I have a new to me Jack Hammer with less than 5000 miles. Going over small bumps in the road can create a “thump” like the sound of your fist thumping on a sturdy wooden table. Has anyone else had this and what was it? Sway bars?

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[Q6543]

Post pics, very few people know about “jack hammer” mustangs

with only 5k miles I’d expect a bushing or 2 could likely be dry rotted or failed.

 

[Philipe1]

Jack Hammers were only made in 2018. Coyote engines w Roush Supercharger rated at 710hp. Only 133 approx (estimates vary) made. Basically a GT then sent to Roush Specialist dealer who adds the blower and other Roush stuff. Mine is manual though they make autos as well.

 

[Philipe1]

I’m having lettering for each front quarter panel 710 hp, Supercharged, Jack Hammer. Named Jack after Jack Roush. Not sure how they came up with hammer.

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