Belt-to-Chain Conversion Kits

For Harley-Davidson Sportster and Big Twin motorcycles

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Petcocks

Brass, aluminum, and steel petcocks and all shapes and sizes!

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Fabrication Parts for Fall

Bungs and Mounting Tabs

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Battery Trays and Battery Boxes

For industry-leading brands like Antigravity, Shorai, EarthX, and more.

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Barrel Style Fuel Gauges

Get one with custom text in brass or aluminum for your custom gas tank!

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Motorcycle Parts, Gear,
and Accessories

Billet Proof Designs was established in 2005 with the goal of providing the best, most affordable motorcycle parts and customer service on the market. We are RIDERS HELPING RIDERS build the bikes of their dreams.

Shop now with us and we promise you'll be a customer for life!

CUSTOMER REVIEWS

 

The guys at Billet Proof Designs are top notch in quality and design. Keep up the great work.

- Rusty Nut Trikes

Stopped into their shop today, the guys invited me in like family, super nice dudes, I will definitely be a returning customer.

- Doug Lowery

Awesome to deal with. Very fast and fairly priced. Was very responsive and the owner himself delt with me directly.

- Steve Longj