O.S. 21XR-B Version II Nitro Engine — RC Crawler Store

O.S. 21XR-B Version II Nitro Engine

Have you been having trouble with the nitro engine in your 1/8th scale buggy? If so, the totally re-designed O.S. 21XR-B Version II is made just for you. The big 21XR-B V2 puts out serious power, yet is designed to be more reliable than ever. Here are some of its highlights- * 2.42 horsepower at […]
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