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Home Offroad RC OS Speed 21RX-B V2 Nitro Buggy Engine

OS Speed 21RX-B V2 Nitro Buggy Engine

OS Speed 21RX-B V2 Nitro Buggy Engine
OS engines unveils the new Speed 21RX-B Version II nitro buggy engine! This version of the 21XR-B power plant has been totally re-designed. It’s even more reliable, and the new 21J3-I carb is easy to tune. The aluminum cooling head ensures steady power even under harsh conditions. And when you’re ready to move up to top competition, you can get up to speed with the 21XR-B Version II. This engine is upgradeable with high-performance OS Speed parts, letting you realize your full winning potential. Equip your ride with the 21XR-B V2, and start owning the podium.


  • Displacement: 0.211 cu in (3.46 cc)
  • Bore: .641 in (16.27 mm)
  • Stroke: .661 in (16.8 mm)
  • Practical RPM: 4,000-40,000
  • Power Output @ 33,000 rpm: 2.45 ps/2.42 hp
  • Weight: 13.40 oz (380 g)
  • Part: OSMG2056
  • Price: $260


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