Quick Bob Twin Cap Gas Petrol Tank Harley Chopper Bobber Cycle Haven 4.5 U.S. Gallon approx. Twin screw in Cap, ideal for any custom Bike, Trike, Chopper or Bobber.. Last priced £209.76 12/20 £209.76 Quantity: at £209.76 each Add To Basket 0 in your basket View Basket Checkout