O.S. Engine – 12XZ Speed Spec III — RC Crawler Store

O.S. Engine – 12XZ Speed Spec III

New from O.S. Engines is the 12XZ Speed Spec III engine. The guys over at O.S. keep squeezing every little ounce of power out of these things! The outer head is 1mm shorter and sits 6mm lower over the crankcase for a lower center o gravity. The crankshaft has DLC coating and pressed-in Tungsten weights […]
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