The Firebolt power plant is the Buell Thunderstorm V-Twin engine. The fuel-injected engine is well-cooled, using air, oil, and fans to accomplish the task. Producing 103 horsepower and 84 lb-ft of torque, acceleration is smooth and powerful. The 3.8-gallon fuel tank is located within the frame, a decision originating from the ""Trilogy of Technology"" mantra of Buell engineers. Buell theorizes that producing a powerful yet nimble motorcycle is a balance of mass centralization, low unsprung weight, and frame rigidity. The aluminum frame contributes to keeping the Firebolt at a lean 395 dry pounds.