The Harley-Davidson Fat Boy boasts greater power than the Kawasaki Ninja H2.

Picture yourself stopped at a signal astride your Harley-Davidson Fat Boy, with a liter-class sports bike rolling up beside you. As your eyes meet, nods are exchanged, and both of you prepare for the sprint ahead. It's a familiar scenario: despite any early advantage you might gain, there's a high probability the superbike will effortlessly streak past you. Superbikes, after all, boast over 200 horsepower, a figure dwarfing the Harley's output by more than half.

But what if there were a way to morph your Fat Boy into a behemoth, boasting over 200 horsepower, capable of outpacing these more potent machines? Enter Britain’s TTS Performance, creators of such a marvel. Here's the scoop.

Yes, you read it correctly. TTS Performance's dynamometer tests reveal that the modified Fat Boy pumps out an impressive 232 horsepower and 205 pound-feet of torque. This marks a staggering 130-horsepower increase from its stock 94-HP output, accompanied by an 80-pound-feet surge in torque. To put this into perspective, these power figures surpass even the mighty 226-HP Kawasaki Ninja H2. And it all kicks in much earlier in the RPM range, promising a white-knuckle ride.

What's the secret behind this monumental power boost? A slew of engine enhancements spearheaded by a supercharger kit, a specialty of TTS Performance. At its heart lies a Rotrex C30-94 counterclockwise supercharger, bolted directly to the crankshaft, delivering 16 pounds of boost. This is complemented by a bespoke intercooler for the charger and a new oil cooler for the engine. On the opposite side of the engine sits a plenum chamber, typically housing the air filter.

But that's not all. This particular machine boasts a Screamin’ Eagle kit, boosting its cubic capacity from 1,868cc to 1,917cc, along with a SE-515 high-performance camshaft and modified cylinder heads. Furthermore, it sports a straight two-into-two exhaust, producing an earth-shattering roar.

Here are the key specs:

  • Power: 232 horsepower
  • Torque: >200 pound-feet
  • Transmission: Six-speed
  • Engine: Screamin’ Eagle 117ci
  • Exhaust: Full-system two-into-two

The Harley-Davidson Supercharger Kit is available for $7,000.

Excited? TTS Performance is currently accepting orders. Priced at $7,000 (excluding VAT), the Softail Supercharger kit can be shipped worldwide. Standard configuration boosts output to 140 horsepower (dyno-tested), but TTS can help you push that number up to a staggering 400! Each kit comes with a 12-month warranty and includes:

  • Rotrex C30-94 counterclockwise supercharger
  • Inlet plenum
  • Intercooler
  • Injectors
  • Belts
  • All brackets, hoses, and ancillaries
  • TTS base engine map (requires Powervision ECU)

Considering a new 2024 Fat Boy retails for $21,999, this kit offers the chance to own an insanely powerful Harley for under $30,000. A compelling proposition, wouldn't you agree?