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    The British Customs Mock Monza Gas Cap utilizes the factory vented gas cap thread to ensure proper modern ventilation while delivering that old school vintage look to your Triumph Modern Classic. Our Mock Monza Gas Cap replaces the OEM cap cover and easily screws on to your stock gas tank. A quick and easy do-­it-­yourself upgrade that gives your Triumph a truly vintage look, the British Customs Mock Monza Gas Cap is available in a sleek anodized black. For those looking for something flashier, take a look at our Stainless Steel Mock Monza Cap, part of our new decoration.


    • Gives a nostalgic look while maintaining the factory gas cap thread
    • Easy to install
    • Light-­weight and durable
    • Easy to repolish and buffer to keep the cap looking its best

    Gas Cap Installation

    • Use snap ring pliers to remove retaining ring holding stock gas cap threads to cap
    • Install gas cap threads to British Customs gas cap with stock retaining ring. 
    • Snap ring pliers can be found at most local hardware stores. 

    What's in the box:

    • Mock Monza Gas Cap

    Common Q & A's:

    Q: Does this Monza cap swing open?
    A: No, this Gas Cap is only a mock version 

    Q: Do I need to use the OEM gas cap?
    A: Yes, this cap replaces the OEM cap cover 

    If you are not satisfied with your purchase we offer a no-hassle 30 day return policy. Items in unused, unaltered, unridden condition are eligible to return for store credit or exchange for FREE or we can refund to the original payment method for the cost of a return label. You can initiate a return online or by calling +1 (877) 999-BRIT or by emailing You will need your order number and the email attached to the order.

    Start your return here: Returns

    We understand that when you make an order, you want your gear as quickly as possible and we will do our best to make that happen! Most of the items we sell will ship quickly and be at your door fast.  

    In Stock Items will ship same or next business day.  The earlier in the day the order is placed, the better the chance it will ship that day.  

    A shipping confirmation email including carrier specific tracking information will typically be sent within 24 hours of an item shipping.  For example, if you place an order Monday night and it ships out Tuesday morning, you will receive your tracking information either Tuesday evening or Wednesday morning.

    View full Shipping Policy