OS1EG01 OS MAX-B21 WITH EFRA 2089 COMBO SET

£364.99
This is the O.S. 21XR-B Ver.2 club-level nitro GT and off-road engine with the EFRA 2089 pipeThe power plant targets club level drivers and it features the 21J3 3-needle carburettor...
Availability: In Stock
Sku: OS1EG01
Vendor: OS

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