124” S&S Street Elite Kit

If you have an S&S 124” motor and want to give it an increase in power and torque, then this kit is for you. Our Street Elite head is fully CNC ported and utilizes oversized valves to increase flow and velocity. We use oversized custom pistons to ensure your cylinders are completely concentric and true. Our pistons have a full skirt coating, Total Seal Rings and a 20° angle. The heads are machined to match the piston which unshrouds the chamber and allows a better combustion. Pair this with one of our custom cams for big performance or stay with the S&S 640 cam that comes in the 124” motors.

$2,516.75

Price does not include shipping or sales tax

Our Jims Upgrade kit is a great way to get more power and torque out of your Jims 131/135. Our Upgrade head uses your existing CNC ports, but by increasing the inlet size and using high-flow valves, we are able to increase the flow and velocity. We offer a 20° angle custom piston for these motors, and the head is machined to match the piston, which will unshroud the chamber and allow for better combustion. Pair this kit with one of our cams to get the most out of your performance Jim’s motor.

$2,512.31

Price does not include shipping or sales tax