Darkhorse Motor Company

Darkhorse Motor Company The Industry Leading Harley-Davidson Crankshaft Remanufacturing and Crankcase Services. Motor Sprocket & Crankshaft Products.
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07/31/2026

Testimonial's from one of the best engine builders should never be taken lightly, especially in a race set up & all that race experience translates to the best longevity on the street

Sturgis bound? Our trusted dealers will hook you up with genuine Darkhorse Motor Co. products:Cycle Solutions Inc. Black...
07/29/2026

Sturgis bound?
Our trusted dealers will hook you up with genuine Darkhorse Motor Co. products:

Cycle Solutions Inc.


Black Hills Harley-Davidson

07/27/2026

Saddle up with Seth for a hard-earned win in the Bagger Racing League GP Class this weekend at Mid-Ohio.

Big shoutout to Tucker Speed for helping us relive the moment!

07/27/2026

Crowned Pinion Races — the King Pin of accuracy and longevity.

At Darkhorse, we developed a crowned profile that supports natural flywheel flex, keeps alignment true, and delivers unmatched stability at the main bearing/crank interface. Tested under extreme load, installable on new or used cranks, and superior to every OEM and aftermarket option. This is the race that upgrades any build to Darkhorse‑level integrity.

Trust genuine Darkhorse MoCo products in all your builds.

07/24/2026

Coming into the weekend like…
BRL Mid‑Ohio is ON. Tune in and help us cheer on Seth Dahmer and the Tucker Speed crew.

07/15/2026

Precision engineering built in every crankshaft, right down to correct wristpin & connecting rod alignment explained with our state of the Art Tobin-Arp Pin Boring machine.

Darkhorse Motor Co is proud to stand behind TRUE American manufacturing. Our components are machined, tested, and finish...
07/03/2026

Darkhorse Motor Co is proud to stand behind TRUE American manufacturing. Our components are machined, tested, and finished right here in the USA. Built right & built to last.

Still riding high from an awesome weekend at Gingerman with the Tucker Speed team! We’re proud of Seth as he once again ...
07/02/2026

Still riding high from an awesome weekend at Gingerman with the Tucker Speed team! We’re proud of Seth as he once again put the #34 on top of the box twice and now sits as the national points leader in Bagger GP! Tony held it down on the #477 with two solid P3 finishes and currently sitting 3rd in National Points.

Both riders run Darkhorse Motor Co components — including prototype parts — in the best test environment possible, long before anything hits the street, so our customers know these parts are durability‑tested at the highest level.

Huge appreciation for the whole Tucker Speed crew, sponsors, and everyone who makes weekends like this possible. Mid‑Ohio, we’re coming in hot!


Tony Tucker - #477
Pro stock bagger

Seth Dahmer - #34
Bagger GP
Supported by:




















N.E.W. Industries





Sleeved lifter bores = a happy engine.Bringing worn bores back to spec keeps the lifters stable, the oiling clean, and t...
06/30/2026

Sleeved lifter bores = a happy engine.
Bringing worn bores back to spec keeps the lifters stable, the oiling clean, and the valvetrain quiet.
Small detail, big difference.

Address

10629 Highway 42
Newton, WI
53063

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

(920) 726-9999

Website

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