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OS .12 CV-R

The engine of choice for serious off-roaders!

This engine draws from O.S.' many years of engineering expertise, with the result being an innovative power plant that's destined to dominate .12-sized racing. The .12 CV-R is packed with high-tech features that transform it into a real powerhouse. Three larger ports (instead of two smaller ones) significantly increase air and fuel intake, for greater and more efficient horsepower.

High-performance features include:

  • Crankshaft is 1mm larger, with a larger crank port that directs fuel mixture more smoothly
  • Larger crankshaft bearings and a beefier, machined aluminum con rod improve the engine's durability
  • The fit between the crankshaft and bearings is much tighter, which increases vacuum and crankcase pressure for added efficiency
  • 10E-R carburetor is especially well-suited for off-road cars, buggies and trucks
  • Full linear action of the 10A slide-valve carb offers more consistent throttle response throughout the rpm range
Displacement 0.129 (2.11 cc)
Bore 0.55 in (14.0 mm)
Stroke 0.54 in (13.7 mm)
RPM n/a


1.0 BHP @ 31000 RPM
Weight 7.05 oz (200 g)
9.11 oz (258 g)
including recoil starter
Price R Not Available

Also available with recoil starter