The HPI F3.5 Pro engine has been developed especially for off road racing. The HPI engraved oversized cooling head not only looks great but has been has been drilled and lowered over the crankcase for maximum heat dissipation and keep that all important C of G as low as possible. It fits on top of a separate Turbo combustion chamber. A finned black-coated crankcase design not only adds strength and rigidity but will also help cool the engine.

The F3.5 Pro is a 5 port 3.49cc ABC engine and has been optimised for performance and durability without compromising on run time. Tested with the HB and HPI Racing teams with great success (UK National A Finalist already) the F3.5 Pro is an engine that can win at the highest level at a price that's ultra competitive. HPI F3.5 Pro Features:

• 14mm crankshaft
• 5 ports + 2 by pass
• Composite slide carburettor with interchangeable 8mm and 7mm venturi
• Black coated finned designed crankcase
• 3.49cc
• Bore: 16.20mm
• Stroke: 17.00mm
• Weight: 345 Gr
• Dust Protection Caps
• Max RPM: 50,000
• Horsepower: 3.30