Harold's Cast Aluminum Primary Cover

This cast aluminum inner and outer primary cover replaces the early stamped steel "tin" covers for Harley big twins from 1936 to 1964. The cover is designed to mount just like the OEM steel covers with stock frames and the stock horseshoe oil tank and fit 1 1/2" belt drive only. All mounting hardware is included. The models from 1965 to 1969 require special bearing support and hardware sold separately. 
These covers are sold in a raw finish or polished with or with out the mid-shift crossover support option. Please indicate in the "notes to seller" upon checkout if you want the cover with the mid-shift or without. There is no additional charge for the mid-shift option. 
These covers are all hand made one at a time in the USA. The two parts are machined and then bolted together and match sanded for a perfect fit by Jasin himself. A lot of attention to detail goes into each one of these parts during the production process to ensure you are getting the best part possible. Since these are all made to order please allow up to 4 weeks lead time. Please visit haroldsusa.com to view this as well as other hand made parts and apparel.  





Upgrades to this shovel head.




The bars are relics from an old Frisco club member that were made in the 60's. The mag is new and I ran some sexy cloth covered wiring. The Harolds' tear drop air cleaner finishes it off.

Harold's tear drop modification

Contact me at haroldsironworks@gmail.com if you're interested in this treatment for your air cleaner.

Fresh from the foundry!

The aluminum primary covers are cast and ready for machining! The final product will be available for viewing at the born free 5 show. We will be taking pre production orders at the booth. They will be numbered so if you're interested in getting one of the early production casings come by the booth at the bornfreeshow.com and see us. They will be for sale in July.

Meditation 4 Madmen video interview



I'm honored to be a part of a new project by meditation4madmen.com. They have a video interview with me online. To view it go to http://vimeo.com/67540348. This is the first of a series of video interviews and features produced by Meditation 4 Madmen. Thanks to everyone who helped produce this and to all the sponsors that gave their support!

Shovelhead with a magneto installed and no more battery!


Vent panel on the Harold's inner primary

The belt drive set up must breath!

Inner and outer patterns for the big twin primary cover are finally done!!


This was quite a project developing my first cast piece. We did 100% of the work on these patterns. Hand made in the USA!! They are at the foundry right now getting put to use. The first castings will be at the bornfreeshow.blogspot.com June 29th. Come check it out if you're at the show.

This is an out take from the Harold's book that is being produced by Josie Ramondetta. Welding up a mold plate for the Harold's Primary cover.

The book will be available at the Born Free 5 show this year. bornfreeshow.blogspot.com Come by and see us at our little shack in the grass if you make it out to the show. It will also be available at the Harold's store online. haroldsironworks.com very soon!

Harold's Panhead Intake Manifold

The directional flow of the Shovelhead intake manifold will soon be incorporated in the Panhead intake manifold. This is the next cast aluminum project by Harold's. Its currently being designed and soon to be flow tested! I want to gain as much performance as possible without compromising the original aesthetic. More details soon, stay tuned...

S&S air cleaner molestation.





This last shot shows the fat we trimmed from the stock cover on Jason Jessee's shovelhead, "The Crazy Negro"

Im working on a photo book produced By Josie Ramondetta exposing the attitude behind Harold's Iron Works. -American Craftsmen-

 The book will be very limited and available at the Born Free 5 Show this June. www.bornfreeshow.blogspot.com Stay tuned for more details...

The drag bike project has begun!!


This is the very beginning of a long journey. A poor man's quest for speed. Here Dagur is stoked on the slicks. This was the first draft at the chassis. It's already changed a little. More to come, stay tuned...