Peaty's Holeshot Fast Flow Tubeless Valves - Slate Grey, 42mm

Peaty's Holeshot Fast Flow Tubeless Valves are high-flow valves made for modern tubeless tyre systems. Their Fast Flow design delivers around twice the airflow of a standard Peaty's MK2 Presta valve. This helps seat tyre beads faster and makes sealant easier to add. A protected internal seal, anti-clog construction and tyre insert compatibility also improve long-term reliability.Key Features and Benefits:Fast Flow design air delivery: The large internal bore allows around twice the airflow of a Peaty's MK2 Presta valve. Peaty's recorded 110L/min compared with 54L/min in a constant 45psi airflow test. This higher air volume helps push the tyre bead onto the rim faster. It can make tubeless setup easier without a compressor or specialist pump.Internal bell house design: Peaty's moves the main valve seal from the upper stem to the base of the 7075 aluminium shaft. This creates a larger sealing area and removes a key restriction from the airflow path. Air can move more freely through the valve and into the tyre. Sealant also has a clearer route into the tyre.Core-free sealant filling: The wide internal flow path lets sealant pass through the valve without removing a traditional Presta valve core. This cuts out an extra step when adding or topping up sealant. It also reduces the chance of losing small valve parts during maintenance. Tubeless servicing is faster and less messy.Clog-resistant construction: The aluminium surfaces are anodised inside and outside to help stop sealant from sticking to them. A stainless steel internal core also supports long-term durability. This design reduces the build-up that can restrict a normal tubeless valve. Airflow stays more consistent and the valve needs less cleaning.Fail-safe internal seal: The critical valve seal sits inside the rim rather than at the exposed end of the stem. If the outer shaft is hit by a rock or damaged during a ride, the protected seal can remain intact. This reduces the risk of a damaged stem causing a sudden loss of tyre pressure.Tyre insert compatible: An internal protective cage keeps the air and sealant path open when a tyre insert is fitted. This prevents foam inserts from blocking the valve opening or restricting flow. The valves can therefore be used with major tubeless tyre insert systems while retaining their high-flow design.Presta pump compatibility and pressure control: The valve works with standard Presta pump heads, so there is no need for a special inflation fitting. Its design also allows small pressure adjustments when setting tyre pressure. This makes it easier to fine-tune pressure while keeping the benefits of the larger internal airflow path.Serviceable lightweight construction: The valve uses a strong 7075 aluminium shaft with a stainless steel core and can be stripped for cleaning or seal replacement. There are no disposable valve parts, which helps extend its working life. Each pair also includes an E-Bike Lube Cap and Spoke Key Cap for extra workshop or trail use. The 42mm pair weighs 11g, while the 60mm pair weighs 14g and the 80mm pair weighs 21g.A dependable tubeless valve should make inflation and maintenance simple without becoming a restriction in the system. The Holeshot Fast Flow design addresses the common problems caused by narrow valve bores, dried sealant and exposed seals. Its serviceable construction also means a worn or dirty part does not mean replacing the complete valve. Peaty's backs the design with its Valves for Life guarantee.Choose from 42mm, 60mm, 80mm or MX 42/60mm lengths to suit your rim and bike. The MX set uses a longer 60mm rear valve for clearance on compatible Bosch e-bikes, while the other lengths cover MTB, road, gravel and deep-section rims. With a wide choice of colours available, Peaty's Holeshot Fast Flow Tubeless Valves are a practical upgrade for a faster and easier-to-maintain tubeless setup.Specification:200% more airflow than a MK2 Presta valveAnti-clog designCompatible with tyre insertsFully serviceable - no disposable partsInternal fail-safe valve sealMicro-adjustment capabilityPresta pump compatible7075 aluminium shaft with stainless steel coreWeight: 11g per pairChris King colour options availableSizes: 42mm, 60mm, and 42/60mm MX (Bosch e-bike)Lifetime Peaty's warranty