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This is the Biggest Motorcycle Engine You Can Buy

Popular Mechanics logo Popular Mechanics 5/2/2019 Alexander George
a person riding on the back of a motorcycle: 2.5 liters of British power.© Triumph 2.5 liters of British power.

There are some things nobody needs in this world, and a motorcycle with a huge 2,458 cc engine is one of them. That’s what powers the new Triumph Rocket 3 TFC (Triumph Factory Custom), which sets a new record for the largest engine in a production motorcycle


  • Engine: 2,458 cc in-line triple
  • MSRP: $29,000
  • Available: December 2019

For context, Genesis makes a sport sedan, the G70, with a 2.0-liter four-cylinder engine-that’s 2,000cc of displacement. With a turbocharger, that car produces decent power for moving over 3,500 pounds of metal and leather and driver, with a zero-to-60 time of 6.5 seconds. Triumph hasn’t stated the exact weight of the Rocket 3, but it will be lighter than it’s 800-pound predecessor. Whatever that number, paired with 163 ft-lbs of torque, means involuntary burnouts on the 240mm rear tire.

Actually, not always. Bikes this overpowered sound intimidating, but like modern supercars, electronics will intervene before catastrophe. The Rocket 3 TFC has multiple riding modes that can keep power in check when roads are wet, anti-lock brakes, and traction control, plus Brembo Stylemas brakes for stopping power. The new Rocket also gets all of Triumph’s modern electronics-a digital dash that syncs to your phone, GoPro connectivity, keyless ignition, LED headlights, cruise control, and USB charging port.

a motorcycle parked on the side of a road: The Rocket 3 TFC’s three-cylinder engine produces 163 ft-lbs of torque.© Triumph The Rocket 3 TFC’s three-cylinder engine produces 163 ft-lbs of torque.

Since the first Rocket 3 came out in 2004, this model has held the superlative of largest production motorcycle engine-low-production custom bikes have gone bigger, but the Rocket has been the biggest you could go buy at a dealership. However, Triumph is only selling 750 examples (with 225 coming to North America) of the new Rocket 3 TFC.

Again, nobody really needs that.

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