is this jp base engine..
Jammin Products is proud to introduce two new engines. A .21 and a .28 size engine. Jammin Jay himself did the R&D on these engines and paid special attention to the details that are so important for off-road R/C racing. Such as durability, ease of tuning, and driveabilty. Tweaks to the materials, crank timing, and tolerances all played a part in getting the engine to the high performance edge that Jammin Jay requires. Both engines deliver excellent bottom end power with great top end run out. Both include Turbo Plug type heads. While the .21 is tuned for the buggies, testing proved it to be more than capable in the truggy class. The .28 is all out big block performance but still very easy to drive and gets surprisingly good fuel mileage. Turbo Glow plug included. Made in Italy
.21 Jammin Engine = Part # 51250
.28 Jammin Engine = Part # 51251