Pulverize the competition with this amazingly fast, durable and easy to adjust engine! Using the latest technology and construction techniques, this is the standard powerplant for the Bullet 3.0 trucks!The slide carburettor fitted in this engine provides a faster response than standard carbs, making it ideal for performance-oriented drivers. Glow Plug: R5 (use HPI #1504) Displacement: 3.01cc Bore: 16.8mm Stroke: 13.6mm Maximum Horse Power: 2.2PS(2.17hp)/ 31,000 RPM Maximum RPM: 32,000rpm Head Gasket: x3 0.2mm Carburetor: F2 Composite 6.5mm