ProTek RC has announced the pre-sale of its new Samurai RM.1 Maifield Edition 3-Port .21 Competition Nitro Engine. Designed in collaboration with legendary professional RC racer Ryan Maifield, the new Samurai RM.1 enhances all the winning features found in the original Samurai RM engine and improves the power plant package even more through higher top end speed, increased fuel mileage, an improved and strengthened engine block, smooth yet powerful bottom end, and a slightly lower CG cooling head with new graphics. “The ProTek RC Samurai RM.1 engine is smooth but powerful, gets awesome fuel mileage, and is easy to tune,”…