Περιγραφή:

O.S. Engines has an affordable new .21 8th scale buggy race engine called the XR-B. The XR-B was designed to put out good power at a reasonable price point, yet can be upgraded as yours skills improve. Some of its features and specifications include-
* A blue-anodized aluminum head keeps the engine cool under harsh conditions
* Simple, adjustable carb features easy tuning
* Shares the same basic layout as the ultimate high-performance 21XZ-B engine
* Can be upgraded with 21XZ-B parts
* Displacement: 0.213 cu in (3.49 cc)
* Bore: 0.641 in (16.27 mm)
* Stroke: 0.661 in (16.8 mm)
* Practical RPM Range: 4,000-40,000
* Output: 2.4 hp @ 33,000 rpm
* Weight: 13.1 oz (370 g)
* Part #OSMG2055