May 11, 2017

Team Orion CRF 21 7-port V3 WS Edition off-road engine

Available now from Team Orion is the World Championship winning CRF 21 7-port V3 WS Edition nitro off-road engine. The second engine David Ronnefalk used to win the 2016 IFMAR World Championship with, the 7-port variant is a replica of the World Spec engine and it was developed throughout the 2016 season in cooperation with Team Orion’s U.S. team to offer a power plant that delivers both power and maximum control. The engine uses the new World Championship winning V3 platform with a completely redesigned crankcase which is stronger and uses a different internal volume. The 7-port sleeve features a new timing and exhaust port shape to deliver extremely high RPM. The dual tungsten-balanced crankshaft revolves in high-quality Swiss ball bearings and the updated carburettor allows for optimised mixture tuning and perfect drivability. In addition to the engine, the CRF EFR 2149 exhaust set is available which is based on the 2-times World Championship winning 2058 pipe. It is keeping the same bottom-end feeling and crispy sound but offers better fuel efficiency and cleaner response in the mid-RPM range.

CRF 21 7-port V3 WS Edition specifications:
– Ports: 7
– HP: 2.9
– RPM: 39,000
– Displacement: 3.5cc
– Bore: 16.2mm
– Stroke: 16.9mm
– Front bearing: 7x19x6mm Swiss
– Rear bearing: 14.2×25.3×6.3mm steel
– Crankshaft: Balanced SG shaft
– Carburettor: Aluminium 2 needles
– Weight: 350g

Source: Team Orion []


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