Peaty’s has launched the Peaty’s Holeshot Fast Flow Valve, a new tubeless valve that looks particularly relevant for electric mountain bike riders who want faster inflation, less sealant clogging and fewer workshop headaches.

According to the company, the new valve has been developed over two years and through more than 27 design iterations, with the aim of improving airflow, reducing hassle, and making tubeless setups easier to live with day-to-day. That matters in the eMTB world because riders are often running tougher casings, lower pressures and tyre inserts, especially through winter and on rougher UK terrain. In other words, a tubeless setup is not a minor detail. It is a real part of how a bike feels and how reliable it is on wet, rocky, and unpredictable trails.

It also fits neatly with the broader setup and ownership advice in Electric MTB UK’s Tech & Advice section and the site’s wider e-MTB buyer’s guide hub, where first-time buyers and experienced riders alike are already comparing bikes, kit and real-world upgrades.

A tubeless upgrade with a clear eMTB angle

The headline claim is airflow. Peaty’s says the valve uses a patent-pending design that moves the seal inside the rim and replaces the usual straight-bore format with a flared bell-house shape. The brand claims this delivers 200% more flow than its MK2 Presta Valve, allowing air and sealant to move into the tyre more quickly and making tubeless seating easier. That is a strong claim, but it is also easy to see why the idea will appeal to eMTB riders, particularly those using inserts or setting bikes up at home without endless patience for stubborn tubeless tyres.

The release also says the valve is designed to resist sealant blockage, with anodised 7075 aluminium surfaces intended to reduce the chance of dried sealant sticking internally. Another interesting detail is the fail-safe angle. Because the sealing point sits inside the rim, Peaty’s says the tyre can remain inflated even if the valve shaft is damaged in a crash or rock strike. For electric mountain bikes, where extra bike weight and harder impacts can punish wheels and tyres, that is arguably one of the more relevant claims in the whole launch.

The company is also positioning the valve as fully serviceable rather than disposable, with service kits available and its established “Valves for Life” approach still part of the pitch. Peaty’s existing tubeless valves already lean on insert compatibility, replaceable parts and durable aluminium construction, so this new model appears to build on an already familiar product direction.

Sizes, compatibility and price

For eMTB riders specifically, the most useful hook may be compatibility and sizing. Peaty’s says the Holeshot Fast Flow Valve works with all tyre inserts, pressure gauges, CO2 inflators, standard Presta pump heads, hand pumps and compressors. It will be sold in 42mm, 60mm and a mixed 42/60mm MX configuration, with the MX option aimed at Bosch e-bikes. That gives this launch a stronger electric mountain bike angle than a generic tubeless accessory story might otherwise have, especially for riders on mixed-wheel setups or Bosch-equipped bikes.

Pricing is listed at £34.99, with a claimed weight of 11g per pair. In a market where riders are already spending serious money refining tyres, inserts, pressures and puncture protection, a better valve is not just workshop jewellery. If the Peaty’s Holeshot Fast Flow Valve really does make seating tyres easier, cut down clogging and hold up better in hard use, it could be one of those small upgrades that makes tubeless life noticeably less annoying.

For more, visit Peaty’s. Riders also looking at the bigger eMTB setup picture can browse Electric MTB UK’s buyer’s guides and tech advice coverage for more practical kit and upgrade ideas.