JIMS 131" Twin Cam Evolution Mount Race Engine

JIMS R&D Department has developed a 131 Cubic Inch Twin Cam engine that bolts directly into Evolution style frames. Now the reliability and performance of Twin Cam technology is available for most OEM Harley-Davidson applications back to 1991, as well as most custom Evolution frames.

The 131" features the same stroke as JIMS 120" at 4 ½", but carries a larger bore diameter of 4 5/16".  To feed fuel to the 131" CNC Ported Heads were developed for effortless airflow. Our R&D team upgraded the oil pump which is found in all current production Harley-Davidson® Twin Cams. Of course, these enhancements were made to increase performance, but they also decreased engine temperatures.  Throw in a brand new billet cam support plate, which utilizes Harley-Davidson’s new hydraulic cam chain tensioner, and finish it off with the latest in high-performance tappets, the new JIMS Powerglide II™. 

Combined, these enhancements take the 131" to a new level of performance and reliability unmatched in race engines.  As always, power deliveries are as smooth off the bottom as stock, with a wide powerband of endless horsepower and torque.  JIMS 131", the newest member of the now legendary JIMS Twin Cam Race Engine family. 

This is, by far, the ultimate race engine for an Evolution based projects. These engines are available through any authorized Harley-Davidson® dealership. For more information contact your local H-D dealer, visit our web-site at www.jimsusa.com, or call Jims at

1-800-482-6913.

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