One photo. That is all HWA has offered so far, and it has been enough to send AMG loyalists into a frenzy.

The German firm posted a single teaser image to social media showing the unmistakable boxy profile of a W124 sedan, wearing what look like updated LED headlights and taillights. HWA has not said the words “AMG Hammer.” It does not need to.

This is the company that built the road-legal CLK GTR Straßenversion and has spent years developing and racing Mercedes-AMGs. Its most recent trick was resurrecting the 190E Evo II as a limited-run restomod. Now it appears to be reaching for the car that made AMG’s reputation before Mercedes-Benz ever owned it.

HWA’s own description is carefully vague. The project, it says, will stay “true to its origins while exploring the possibilities of modern technology, a familiar idea is taking on an entirely new form.”

That sentence is carrying a heavy load. “True to its origins” is a big promise when the origin in question is the 300E 5.6 AMG.

The original Hammer arrived in the mid-1980s, when AMG was still an independent tuner with something to prove. It took a sensible W124 executive sedan, pulled out the naturally aspirated 3.0-liter inline-six, and dropped in a 5.5-liter V8.

The result was 355 horsepower and 388 lb-ft of torque going to the rear wheels. Sixty mph came up in five seconds, in a car that looked like it belonged in a dentist’s driveway.

AMG later went further, fitting a 6.0-liter V8 good for 385 hp and 420 lb-ft. The nickname stuck because the car earned it.

The Hammer was never about styling. Plenty of W124s wore body kits. What made this one matter was the engine, and the sheer nerve of cramming that much displacement into a family sedan.

Which brings things back to HWA’s last project. The reborn Evo II uses a twin-turbocharged 3.0-liter V6 that HWA developed itself, rated at 444 hp and 406 lb-ft. That out-muscles the original Hammer on horsepower in both forms, though the 6.0-liter car still wins on torque.

HWA has not confirmed what will power the new car. It could reuse that V6, or it could do something else entirely.

But anyone who remembers why the first Hammer existed can see the problem. Its whole identity was the V8. A modern version with fewer cylinders and more boost might be quicker on a spec sheet, but it would feel like a very different car.

The Evo II hints at the visual direction. That car gained more aggressively flared wheel arches and extensive changes beneath the bodywork, and the same approach would suit the W124 shape well.

The teaser itself reveals little beyond the silhouette and lighting. No detail on the arches, no interior, no badge that settles anything.

What HWA has shown is a willingness to touch the most sacred material in AMG’s back catalog. The CLK GTR road car proved it could build something extreme. The Evo II proved it could sell nostalgia with modern hardware.

The Hammer will test whether it can do both without losing the thing that made the original worth remembering. HWA has the silhouette. The heart is still under wraps.