Delay of Overseas Postal Services & Postage Adjustment
Hello Valued Customer, Due to the worldwide epidemic our long time mail partner: Hong Kong Post's services has been affected greatly. Rest assured, we have sourced several other courier methods, and hope to send all orders to all our customers around the world. Even with the new courier methods, shipping times will have some delays, hope you will understand that during these difficult times due to reduced flights no courier can function as usual. Sorry for any inconvenience caused.
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O.S. Engine O.S. ENGINE 1/8 R2103 On-Road 21 Class Engine OSMG2020

USD 309.90 USD 400.90 (Save 22.7%)

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Tags: O.S. Engine, Engine

O.S. ENGINE 1/8 R2103 On-Road 21 Class Engine OSMG2020 #OS1AY00


The next generation of on-road performance has arrived with the Speed R2103 from O.S.! Capable of a wider range of torque than the R2102, the Speed R2103 dominates even on high-grip surfaces. Superior fuel consumption ensures you get the most mileage from every fill-up. Factory-applied two-color graphics add signature style to this sleek-looking power plant.


  • For: 1/8 On-Road
  • Material: Metal / Plastic
  • Color: Black
  • Compatible with 16% nitro fuel, which complies with EFRA regulations.
  • Crankshaft with Diamond-Like Coating (DLC) and an embedded tungsten weight.
  • Outer head with factory-applied two-color graphics.
  • Inner button head allows for finer tuning to meet track conditions.
  • Steel rear ball bearing.
  • Slide valve carburetor.
  • 8.5 mm reducer installed in the carburetor venturi to reduce the amount of airflow for greater torque.
  • Turbo RP7 glow plug.
  • Includes exhaust seal ring, tapered collet and three carb dust seal caps.
  • Also available with the T-2080SC Pipe Set, constructed of polished aluminum and tuned for competition.


  • Displacement: 0.213 cu in (3.49 cc)
  • Bore: 0.633 in (16.08 mm)
  • Stroke: 0.677 in (17.2 mm)
  • RPM Range: 4,000-45,000
  • Output: 2.76 hp @ 33,000 rpm
  • Weight: 11.99 oz (340 g)


  • O.S. ENGINE 1/8 R2103 On-Road 21 Class Engine OSMG2020 (1 set)

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