Brass Balls Cycles “Challenge Coin” Fuel Cap

brassballs1brassballs2brassballs3brassballs4Dar Holdsworth of tells me that after many years of only building bikes, he has decided to offer a limited edition line of parts. His first new part is a billet aluminum fuel cap that accepts “Challenge Coins” that he has decided to bring to market via Crowdhoster, a crowd funding website. As most among you already now, many members of the military have a “challenge coin” that is very special to them. These challenge coins are normally presented by unit commanders in recognition of special achievement by a member of the unit. They are also exchanged in recognition of visits to an organization.

Holdsworth got the idea to offer a gas cap allowing to proudly display a challenge coin flush mounted in the cap on their bike. The gas cap is machined from  6061 billet aluminum, fitted with a Viton o-ring which is impervious to modern fuels with ethanol, offered in polished, brushed and black anodize and brushed and clear anodize and made in the USA (Oklahoma) The cap fits late model Harley-Davidson gas tanks.

For those who do not have a challenge coin, Dar Holdsworth have created his own Brass Balls Cycles coin in limited edition. Only 100 numbered coins will be made. A dab of RTV silicone is all that is needed to secure the coin to the fuel filler cap. Screw the fuel cap securely on your bike. Dab a small amount of RTV silicone on the recessed area of the fuel cap as well as on the back side of the coin. Press the coin firmly in place in the recessed area of the cap (positioning it as you desire). Let it sit overnight.

Shipping is expected to start mid March 2014. There are only 3 days left to reserve your gas cap & commemorative coin. Just Go to .

5 Responses to “Brass Balls Cycles “Challenge Coin” Fuel Cap”

  1. 1 18Bravo Feb 25th, 2014 at 10:02 am

    As a holder of the original challenge coin, I find this a great idea. But for those who know why it is called a challenge coin, you’re still going to have to buy a round if it is not physically on your person when the first coin hits the bar. Just sayin’.

  2. 2 Feb 26th, 2014 at 7:27 am

    Cool idea. Dar always brings top quality to the marketplace.

  3. 3 Feb 26th, 2014 at 9:52 am

    Dar does great work. Curious though. Does a Brass Balls coin trump a MoCo challenge coin? 🙂

  4. 4 JusmecuZ Feb 26th, 2014 at 2:08 pm

    Damn right it does

  5. 5 Feb 26th, 2014 at 4:59 pm

    Agree with ALL of the above

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