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Home RC Car Parts OS 12XZ Speed Spec III Nitro Engine
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OS 12XZ Speed Spec III Nitro Engine

OS 12XZ Speed Spec III Nitro EngineThe team over at OS Engines have been hard at work on their latest R/C nitro race engine, meet the OS 12XZ Speed Spec III. In addition to smoother acceleration from idle to full throttle, the 12XZ Speed Spec III also has increased low-to mid-range torque. Drivers will still enjoy the same impressive top end speeds that 12XZ Speed Spec engines are known for with the bonus of improved fuel mileage. In fact, acclaimed on-road champion racer Takaaki Shimo utilized all of the 12XZ Speed Spec III’s advantages to claim victory in the 2012 Japan Nats!

Features:

  • Redesigned head button for better performance and improved acceleration
  • New cylinder liner and piston improve mid speed torque and fuel mileage
  • The slide valve’s shape allows for a smoother flow of fuel and air

Specs:

  • Displacement: 0.128 cu in (2.1 cc)
  • Bore: 0.543 in (13.8 mm)
  • Stroke: 0.55 in (14.0 mm)
  • Practical RPM range: 5,000-44,000
  • Output: 1.73 hp @ 35,000 rpm
  • Weight: 7.9 oz (225 g)
  • Includes: 12F2(B) carburetor, RP6 glow plug, exhaust seal ring, dust cap set, 5.5 mm red carb reducer
  • Part: OSMG1992
  • Price: $699.99

OS 12XZ Speed Spec III Nitro Engine

 
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