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Press Release From SMJ:
www.smj-rc.com
The new SMJ Kabuto R21 engine has undergone a detailed review and evolution.
While maintaining the smooth and easy-to-use characteristics of the previous Kabuto R21 engine, the improved crankshaft delivers more torque in the mid- and low-speed range along with better idling performance, resulting in stable and easy-to-use performance even during long races. The lightweight outer head, with its superior cooling performance, features a special graphic design.
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