Unmatched Performance & Durability since 1983
JPrecision specializes in high performance machining of engines components. We let your local qualified mechanics to do the final assembly. Contact your local dealer for more details.
It only takes one pass on a dyne or a quick ride on an open road to fully appreciate the exceptional performance offered by JPrecision heads. Cylinder heads modified and upgraded by JPrecision are simply the most powerful and reliable that money can buy.
Unmatched Performance & Durability since 1983
JPrecision specializes in high performance machining of engines components. We let your local qualified mechanics to do the final assembly. Contact your local dealer for more details.
It only takes one pass on a dyne or a quick ride on an open road to fully appreciate the exceptional performance offered by JPrecision heads. Cylinder heads modified and upgraded by JPrecision are simply the most powerful and reliable that money can buy.
Adrenaline and Satisfaction Guaranteed!
STAGE IIB – High Torque Heads
The Ultimate upgrade for your Shovelheads.
We redesigned and raised the intake port by welding to increase velocity, allowing for a crisper throttle response and more power. We install new oversize valves and the intake and exhaust ports are fully hand finished to provide an optimal flow rate and raise the velocity for a crisper throttle response.
HEAD WORK OPTIONS
COMPRESSION RELEASE VALVES
We machine the heads to install the compression release valves in line with the spark plug for an easier access and a better look. Recommended for 96″ and up.
To download our Shovelhead machining services catalog or our head work sheet, click here:
