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SKU: TUBE0549

Premium 26x1.9-2.125 Flat Attack Tubeless Valve Street & Mountain Bike Tubes with SV Valve, 48mm Length, Pre-Injected Flat Attack Fluid, Supports IBD, 5-Year Guarantee, Durable Materials, Innovative Puncture Resistance

Regular price $17.30
$14.95 Sale price $17.30 Regular price
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$10 Gift Card

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Description
Specifications

Experience unparalleled flat tire protection with the Flat Attack Tube 26x1.90-2.125 SV 48mm - an essential upgrade for serious cyclists and daily commuters alike. Crafted with premium materials and engineered for durability, this high-performance inner tube combines innovative technology with reliable design to keep you rolling smoothly on both pavement and light trail terrains.

Materials & Construction:

Made from high-quality, durable rubber compounds, the Flat Attack Tube ensures optimal elasticity and puncture resistance. Its 48mm Presta valve features a smooth valve stem for easy inflation and deflation, providing a secure and consistent seal that minimizes air loss during rides. The tube's precise sizing (26x1.90-2.125) ensures a snug fit within compatible tires, enhancing overall ride quality.

Performance & Engineering:

Built with flat protection in mind, Flat Attack tubes are pre-injected with Flat Attack sealant technology, providing instant sealing of small punctures and cuts. This innovative feature reduces downtime and extends the lifespan of your inner tube, making it ideal for urban commuting, touring, or mountain biking on light trails. Backed by a 5-year guarantee, these tubes are engineered for peace of mind and long-lasting performance.

Components & Technology:

Supporting the Integrated Bicycle Design (IBD), these tubes are compatible with modern wheelsets and rim profiles. The SV (Shrader Valve) setup with a 0-degree valve angle allows for straightforward installation and inflation, compatible with most standard bike pumps and inflators. The pre-injected Flat Attack foam ensures continuous protection against flats without sacrificing ride quality.

Style & Use Case:

Designed for versatile use, the Flat Attack Tube 26x1.90-2.125 SV is perfect for everyday commuters, gravel riders, and hobbyists seeking reliable flat protection without compromising on performance. Its neutral appearance complements a wide range of bike styles, from mountain bikes to hybrid bicycles.

Innovative & Differentiating Features:

- Pre-injected with Flat Attack sealant for rapid puncture repair

- 5-year guarantee for extended peace of mind

- Supports IBD for easy integration with modern wheel systems

- Not sold in big box stores - ensuring quality and exclusivity

Upgrade your cycling experience with the Flat Attack Tube 26x1.90-2.125 SV 48mm - designed to keep you moving forward, no matter what the road or trail throws your way. Trust in its technology, durability, and performance to reduce flats and boost confidence on every ride.

  • Premium Flat Attack Tube designed for 26-inch mountain and hybrid bikes, featuring durable materials and seamless injection technology for enhanced reliability.
  • Constructed with high-quality butyl rubber and reinforced with advanced engineering, ensuring superior puncture resistance and long-lasting performance on rugged terrains.
  • Supports IBD (Inner Bike Discipline) standards and compatible with Presta valves, providing versatile use for different bicycle setups and tire pressures.
  • Innovative Flat Attack injection process offers a 5-year guarantee, giving cyclists confidence in durability and reducing the frequency of tube replacements.
  • Optimized for mountain biking and gravel riding, these tubes are ideal for aggressive trails and off-road adventures, combining strength, reliability, and easy installation.
Size26x1.90-2.125
Valve TypeSV
Valve StemSmooth
Valve Angle0d
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We pride ourselves on our ability to ship and deliver your gear with excessive speed! We ship from 22 locations throughout the United States and most orders will arrive in 3 days or less with Free Shipping on orders over $75!

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Most orders placed during the workweek before 1:00 PM Eastern time ship the same day, but during peak/holiday season or depending on inventory location handling time can take up to 48 hours. If you have questions regarding shipping estimates, don't hesitate to get in touch with us before placing the order. There is a direct signature requirement for all orders over $500.

We provide the you the ability to utilize multiple shipping & billing addresses, based upon what fits your current needs. However you are responsible to maintain and update any new address changes, as 365 Cycles will not be held liable for orders being shipped to an incorrect address.

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If you need to return your order please email us at info@365cycles.com, call us at 603-968-5797, or use the live chat on our site.

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365 Cycles puts the customer above everything. Our number one goal is your satisfaction. When you press the shift lever you want the gears to shift, and when you buy bicycle parts, you want the bicycle parts to arrive on time in new condition. With over 60,000 products and 22 warehouse locations throughout the country, we have the parts you need and they are coming in hot!

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Our team is waiting to help you 7 days a week and they are more qualified to help than I am but if you ever feel like you're not getting the service you need I’m personally asking you to email me at ben@365cycles.com with "CUSTOMER LOYALTY" in the title and I will personally handle your order.

Over the years we have served millions of satisfied customers and continue to serve many of them today. With your feedback, we are confident we can take this lifelong journey together and build a friendship that goes beyond parts and accessories.

“If you want to go fast, go alone, if you want to go far, go together.” -Someone Smart

Ben Berman Founder & CEO of 365 Cycles


Company Core Values: 

These were established by the members of our team and we use them every week to call out team members who have shined in one of these areas. Feel free to let us know at info@365cycles.com if someone you worked with has gone above and beyond in one of these areas. 

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Stronger together:

If you want to go fast, go alone, if you want to go far, go together. Get your team involved and become stronger together.

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Customer Reviews

Based on 13 reviews
69%
(9)
15%
(2)
15%
(2)
0%
(0)
0%
(0)
A
Amazon Customer

Nice quality & quick delivery;

J
J. Mark Cobb

Installed them over a year ago but still have to add air to one tire now and then. Better than having to insert the substance yourself into the valve though. There are lots of sticky balls around here.;

f
farington

I've had these on my bike for about 9 months riding 2-3 times a week and I haven't had any problems. When I was installing one of them I had some problem with the valve being stuck open because of the sealant. I took out the valve cleaned the inside of the valve stem cleaned the sealant off of the valve and it worked fine. I haven't hit any thorns or nails or glass so I don't know if the sealant works or not but on previous bikes I've put sealant in the tubes and it did in fact seal up thorn punctures.;

s
susan

Shipped on time. No flames in month. Will update in a year;

p
paul Smith

Great;