Ty Tessmann Speed B2101 Engine

Speed R2102 Engine

Ramping up an on-road powerhouse

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.

Speed R2102


  • Specifications
  • Parts Listing
  • Gallery
Stock Number: OSMG2048
Displacement: .213 cu in (3.49 cc)
Bore: 0.633 in (16.08 mm)
Stroke: 0.677 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)
Includes: R2102 inner head, T-RP7 plug, exhaust seal ring, tapered collet