From O.S. Engine:
1/8 scale buggy competition is as fierce as it gets. You want every advantage possible — and it starts with the 21XR-B Version II engine.
This updated 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 O.S. Speed Parts, letting you realize your full winning potential. Equip your ride with the 21XR-B Version II, and start owning the podium. Get all the details by visiting osengines.com.
- Engineered for up-and-coming 1/8 scale buggy club racers, with upgrade capability for competing at the highest levels
- A dependable, low-maintenance engine that fits into most any budget
- 7 mm and 8 mm carb intake restrictors are included that can be swapped out quickly and easily for fine-tuning to meet specific track conditions
- O.S. Speed parts are available for updating the outer and inner heads, crankcase, crankshaft and more
Displacement: 0.211 cu in (3.46 cc)
Bore: 0.641 in (16.27 mm)
Stroke: 0.661 in (16.80 mm)
Practical rpm: 4,000-40,000
Output @ 33,000 rpm: 2.45 ps/2.42 hp
Weight: 13.40 oz (380 g)
Includes: P3 turbo plug
#OSMG2056 – $259.99