Solidify the Harley crankcase

Start with the cases

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Your cases or ours. This is the foundation, no shortcuts here!

Timken bearing upgrade

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Convert your drive side case to the stronger Timken bearings. Remove the weak link in your lower end. 

Balance & Blueprint

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All Harley crankwork is done at the Darkhorse facilities

Darkhorse Specs & Warranty

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Specs

We true all crankshafts to within .0015” total indicated run-out at each main bearing race and guarantee all street/OEM applications to stay within  .0005” for 2 years and unlimited mileage.