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Shovelhead | JPrecision
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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.

Find Dealer_EN

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.

Find Dealer_EN

Adrenaline and Satisfaction Guaranteed!

Shovel-head Stage2b

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

Shovelhead compression Release Valve

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:

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