OS Engines Speed B2105 .21 Nitro Buggy Engine

The OS Speed B2105 RC engine has evolved into the fifth generation of the B21 series. It is designed to secure power that gives an advantage in harsh off-road racing scenes and pursues a driving feel that steadily demonstrates performance in any situation. By re-designing the cylinder liner and crankshaft, we have achieved smooth and linear power delivery. Furthermore, the effect of a lighter outer head successfully improves drivability in any situation. Features Newly designed cylinder and liner for better performance The carburettor is based on the 22E with an improved idle adjustment valve providing a more stable fuel supply The thrust plate with surface treatment embedded in the cover plate reduces friction against a connecting rod to extend its life Inherited from the well-established B2104 crankcase, the bearing uses a proven ceramic bearing Outer head weight has reduced Modified crankshaft has undergone O.S.SPEED's traditional DLC coating and the internal shape has been revised to improve not only power characteristics but it's easier to use than B2104 Specs Displacement: 3.49 cc / 0.213cu.in. Bore: 16.27mm / 0.641 in. Stroke: 16.80mm / 0.661 in. Output: 2.68 ps / 2.64 hp / 34,000 r.p.m. Practical rpm range: 4,000-42,000 r.p.m. Engine Weight: 348g / 12.28 oz.