Double Checker BF25 The Pro formula uses an

The Pro formula uses an optimal viscosity to enable fast and even distribution of the sealant around the tyre

wax and grease in a safe way

Suitable for all purposes on and around bikes

guides and elastomers

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Double Checker BF25 The Pro formula uses anChecking your chain and rotors for wear is crucial if you want to get the most out of your components and stay safe. A worn out chain is slower, can affect the durability of your entire drivetrain and can snap more easily. Similarly, disc rotors that are too thin mean your braking power is drastically lower than with new rotors, which leads to unreliable braking and dangerous situations. With the Double Checker, you know exactly how worn your chain