A practical choice for road, gravel and MTB riders who want a compact, fast emergency option for inflating and sealing a small puncture mid-ride.
Muc-Off B.A.M! Instant Puncture Repair is an emergency aerosol for tyres and inner tubes, combining inflation and puncture sealing in one application. The pressurised can injects air and pink synthetic latex foam directly through a Presta valve, helping you get moving without removing the wheel or fitting a new tube at the roadside.
It is designed for road, CX/gravel and MTB wheels, including tubeless setups using most common sealants, and seals punctures up to 3–4 mm. The can is rated to inflate a 29-inch MTB tyre and a 700c road tyre in under a minute; independent testing also found it restored a 25mm road tyre to 90 psi and handled smaller road punctures particularly well.
For the cleanest result, remove the cause of the puncture, place the valve at 12 o’clock, shake the can thoroughly and press the nozzle firmly and straight onto the valve. Once applied, tighten the valve core and spin the wheel to distribute the latex. The nozzle needs careful alignment because escaped foam can make a mess. B.A.M! is an especially useful backup for racing, commuting, tubular-style emergency planning and rides where a conventional puncture repair would cost valuable time.
Inflates and seals together
One application delivers compressed air and latex foam, helping you deal with a puncture without carrying out a full roadside tube change.
Seals holes up to 3–4 mm
The synthetic latex foam is designed to close common small punctures in tyres or inner tubes.
Fast roadside inflation
Muc-Off rates it at under one minute for both a 29-inch MTB tyre and a 700c road tyre.
Broad riding use
Suitable for road, CX/gravel and MTB wheels, making it a useful backup across multiple bikes.
Ammonia-free formulation
The sealant does not contain ammonia and is compatible with most tubeless sealants.
Compact emergency backup
The 125 ml can fits in a ride pack and can also be carried on the bike using a separate utility belt.
Presta valve connection
Designed for Presta valves; fit the nozzle firmly and keep it straight to reduce foam escaping during use.
General
Performance
Compatibility
Materials and formulation
How to use
Safety information
B.A.M! Instant Puncture Repair
Combines inflation and puncture repair in one emergency aerosol, injecting air and latex foam directly into the tyre or tube so you can get riding again quickly.
Synthetic latex foam sealant
The pink latex foam is designed to seal punctures up to 3–4 mm while the aerosol inflates the tyre.
Bike care, tubeless and workshop products with roots in racing and rider-led development.
Muc-Off is a British cycling brand that began in 1991, originally linked to X-Lite UK and the development of an early twin crown bicycle fork. The company grew from its now-signature pink bike cleaner into a much broader range covering cleaning, lubrication, tubeless setup, workshop tools and puncture protection.
Today, Muc-Off is known well beyond bike wash products, with an in-house R&D focus and an expanding catalogue aimed at road, gravel and mountain biking. Its tubeless range sits alongside maintenance and workshop products, reflecting the brand’s evolution from bike care specialist to a broader performance accessory brand.
