X-Act Pro 5 .21 5-port nitro engine

New from X-Act is the Pro 5 3.5cc nitro buggy engine. The Pro 5 uses the same high quality carburettor as the Sportive but offers enhanced power thanks to a new crankcase and a 5-port piston and liner set with lightened piston for higher RPM. Greater internal porting enhances fuel flow and the engine also comes with a coated crankshaft. To top it all off the Pro 5 comes with a lightweight, drilled, CNC machined head as well and a turbo plug combustion camber insert. All piston and liner sets are hand matched and offer a tight initial fit but long life after the run in process and all engines from the range are hand assembled in the UK to ensure correct fitment and parts quality verification.

Features:
– 5-port ABC piston and liner for high power output
– Coated crank
– Double bushed “Pro” conrod
– Turbo head button
– German manufactured O-rings for long life
– High quality 2-needle carburettor with thermal heat shield for consistent tuning
– Includes 8.00mm and 9.0mm venturi insert with alternative fitments available
– Black treated crankcase with high quality bearings and laser etched logo
– Multi fin CNC heat sink head for enhanced cooling
– Pre shimmed for 25% nitro. Includes additional 0.1mm shim which can be used to ease running in or reduce shimming

Source: X-Act [xact-rc.com]