RCMAX is the leader in Big Bore Technology and performance. Made in Great Britain RCMAX was the first one to produce a big bore engine for RC. RCMAX continues to push the envelope of performance and quality with second to none machining quality and customer service. If you are looking for the best there is, look no farther. RCMAX also produces high quality aftermarket upgrades. See other page for a list of those parts for your 1/5 scale car.