O.S. Engine Speed R2102 1/8 On-Road Nitro Engine

O.S. Engine Speed R2102 1/8 On-Road Nitro Engine

From O.S. Engine:

With the goal of once again dominating the world championships, O.S. has gone back to the drawing board and refurbished the Speed R2101. The result is the Speed R2102, designed to deliver the performance 1/8 scale on-road racers demand. Virtually everything about the R2102 has been tweaked, but don’t worry: the key features that have made Speed engines hugely popular among competitive drivers are still here.


  • Center of gravity is 3 mm lower, for better handling
  • A second inner button head allows for finer tuning to meet track conditions
  • New ceramic rear bearing reduces friction loss
  • Sharp new laser graphics
  • Compatible with 16% nitro fuel, which complies with EFRA regulations
  • Retains Speed innovations such as DLC coating and tungsten weighted crank shaft


Displacement: .213 cu in (3.49 cc)
Bore: .633 in (16.08 mm)
Stroke: .677 in (17.2 mm)
Practical RPM: 4,000-45,000
Power Output: 2.8 ps/2.76 hp @ 33,000 rpm
Weight: 11.99 oz (340 g)


R2102 inner head, T-RP7 plug, exhaust seal ring, tapered collet

OSMG2048 – $449.99

O.S. Engine Speed R2102 1_8 On-Road Nitro Engine

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Updated: October 30, 2015 — 10:16 AM
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