Darkhorse Crankworks
Darkhorse Crankworks

Darkhorse Crankworks     |     10629 Highway 42     |     Newton, Wisconsin 53063     |     (920) 726-9999

New Crankshafts

We are committed to building the strongest foundation for top engine builders and dealers across North America and around the world.

View Retail Price List

How It All Began

Our distributors and dealers asked us to build new Darkhorse certified crankshaft assemblies. The crankshaft assemblies needed to meet our stringent tolerances and be balanced to our specifications. To fulfill this request, we formed alliances with top flywheel manufacturers across the USA who now supply us with components which we couple with our precision parts. The end result is an affordable, top-of-the line crankshaft. 

We manufacture crankshafts that are truly unique. They are designed and built specifically for an intended application and customer. This value added service, provides you with a bottom end that will surely strengthen your bottom line. This is a product that will stand the test of time and torque. 

Our Inventory

If an “off the shelf” crankshaft is all your build or budget requires, we also stock Harley-Davidson® OEM crankshafts, S&S® crankshafts, as well as other manufacturers.

Ordering is Easy

New Crankshafts and components can be ordered by filling out the New Orders Form, or by contacting us.

New Motorcycle Components

Darkhorse is the "pioneer" in offering full service to pressed together Harley Davidson® and Buell® crankshafts.

H-Beam Chromoly

Our exclusive line of parts, supports the ever-growing need for big horsepower and torque. Our H-Beam Chromoly connecting rods are second to none. Product options include our inexpensive competition rods (made with imported forgings), to our impressive “Made in the USA” forgings and Carrillo-made connecting rods.  Centerlines are machined to within .0003” of each other. They are the only rod that can provide you a true .001” stack-up tolerance which is quickly becoming industry standard.

Darkhorse Pro-Plug System

Darkhorse's innovative Pro-Plug System is often copied, but never duplicated. Our system far outperforms welding alone. It is is truly the cornerstone of our success and reputation.  All our proprietary bearings and races are now available exclusively through Darkhorse.

Properly Balanced Crankshaft

Our precision balancing method has proved to our dealers, and their customers, the benefits of a properly balanced crankshaft from Darkhorse Crankworks. Since 1980, we have been perfecting our processes, constantly reviewing and improving. This method equates to the smoothest crankshafts in America.

Crankshaft Vibration Analysis and Runout Measurements

Since 1980, we have performed extensive testing on crankshaft balancing and conducted vibration analysis. We have concluded that the most important unit of measure is runout at each main bearing race. Runout measured at the end of each shaft is a byproduct of those measurements.

Darkhorse Crankshaft Craftsmen

Over the years there have been many businesses who attempt to follow our processes, utilize our techniques or claim to have the same quality as our Darkhorse Crankworks ® products. What they do not have is our team of machinists, engineers and craftsmen - experts in providing the solid, quality products in a time frame you deserve.

View warranty info.

Thanks to Darkhorse Crankworks for preparing the perfect crankshaft: pinion shaft runout close to zero paired with vibration-free running condition.

Thank you very much and best regards from Germany!

Armin Jung,
Ratingern, Germany

I just got back from a 3,700 mile trip with my new 107 build Darkhorse Crank. It was very smooth - plugged and welded. Very happy with work.

Tony Gray