WTB TCS Max-Flow Tubeless Valves - 44mm Black Pair. The TCS Max-Flow Tubeless Valves features an insert-compatible base increased bore diameter an integrated valve core remover and an ergonomically designed nut that allows riders to properly tighten down the valve without the use of a tool. TCS Max-Flow Tubeless Valves feature a castellated base for multi-directional air flow out the sides therefore preventing the airflow restriction that can occur with a tire insert being pushed up against a traditional valve opening. The increased bore diameter helps seat tubeless tires and prevent clogging that would typically occur after pouring sealant through the valve.
Insert-Compatible: Max-Flow base guarantees air flow
Increased Bore Diameter: Supports an 84% increase in air capacity and reduces sealant clogging
Valve Core Removal Cap means searching for pliers no longer needed
Uses a Universal Presta Valve Core
Knurled Easy-Grip Nut with ergonomic shape allows hand tightening
O-Ring rubber grommet protects the rim from damage
Universal Rubber Stopper compatible with all rim widths and offsets
QUALITY SERVICE
Just real riders who strive to provide the best customer service.
FREE SHIPPING
Most orders over $75 ship free anywhere within the lower 48 United States
RETURNS
Not happy with your order, just send it back to us for a refund or exchange.
Our Race Team Sponsors
Also Supported By
Our Race Team Sponsors
Also Supported By
Race Team
Racing is a huge part of the culture at Lenny’s Bike Shop, and the Lenny’s Race Team represents the shop on trails and racecourses throughout the region. Made up of passionate riders who love pushing their limits, the team competes in gravity and mountain bike events while proudly representing the Lenny’s community.
Why Shop with Lenny's?
At Lenny’s Bike Shop, cycling isn’t just a business — it’s a passion. As a locally owned, full-service bike shop, Lenny’s is dedicated to helping riders of every level enjoy the sport with the right bikes, gear, and expert support.
From high-quality bicycles and components to trusted service and advice, the team focuses on delivering products and support that help you ride more and ride better.
Whether you’re upgrading your bike, tuning up your ride, or just getting started, you’ll find knowledgeable staff, great brands, and a commitment to keeping the cycling community rolling.