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    Triumph builds a great looking bike, no contest, but that bulky, stock plastic brake reservoir doesn’t do it any favors. British Customs has developed a stealthy solution: a slick, black billet replacement unit that fits right in and enhances the design dynamic of your Street Twin. Our Reservoir upgrade kit goes well beyond mere dress up of the stock reservoir with a new cap or “sweat band” cosmetic cover -- it’s a complete replacement, smaller, sleeker and machined from billet aluminum and anodized black. It fits directly into the Nissin master cylinder* with a machined adapter and o-ring seal, eliminating the stock hose. Made without a sight glass, our unit will never have fogging or leaking sight glass issues.


    • Billet reservoir replacement
    • Eliminates stock plastic reservoir and hose
    • Low, sleek profile
    • Direct mount to Nissin Master Cylinder
    • Improves look of handlebar and controls
    • Billet reservoir cup
    • Nissin reservor adapter
    • Brembo O-ring
    • Fluid diaphragm

    Note: Does not fit radial master cylinders.

    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