O.S.Engines
2954 produkter
This is the O.S. 21XR-B Ver.2 club-level nitro GT and off-road engine with the EFRA 2089 pipe
The power plant targets club level drivers and it features the 21J3 3-needle carburettor with 7mm and 8mm venturi inserts.
Tech specifications:
Displacement: 3.49 cc
Bore: 16.27mm
Stroke: 16.80mm
Intake ports: 3-port
Practical RPM range: 4,000 – 40,000 rpm
Max. power output: 2.42 hp / 34,000 rpm
Weight: 380Gr
