Stans No Tubes Flow EX3 27.5-inch Rear Wheel

More Information
Brand	Stans No Tubes
Colour	Black
Wheel Size	27.5-inch
Tyre Type	Tubeless

Stans No Tubes is the first name in tubeless bike tyre systems. Established in 2000, this small company has a big name and their reputation is known all over the World - Stan's tyre sealant, ZTR rims, tubeless conversion kits, tubeless wheelsets & tyres.

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Stans No Tubes Flow EX3 27.5-inch Rear Wheel

The Flow EX3 craves high speeds and the most demanding trails and courses. With a proven pedigree in Enduro World Series and World Cup DH races, this is the most durable, high-performance wheelset available.

The Flow EX3 rim combines the 29mm internal width and durable 6069 aluminum construction of the Flow MK3 with the incredibly strong Tiebeam triple cavity design of the classic Flow EX rim. The result is a rim shape that perfectly balances radial compliance with lateral stiffness and sets the benchmark for durability and impact resistance. The Flow EX3 rim’s Tiebeam inner bridge lets it withstand impacts that would deform most rims to the point of air loss and structural failure. Even if you use a tire insert, huge impacts can cause the sidewall of most rims to fold, causing air loss and eventual failure. But the Tiebeam brace and patented low sidewalls of the Flow EX3 resist this folding, maintaining air pressure and structural integrity better than any other rim.

The E-sync hub is built for strength and durability. Whether you're racing in wet conditions, attacking rock gardens, or putting down the climbing torque of an eBike, the cromoly axle and double row Enduro bearings of the E-sync can take it. The 6066 alloy shell and heat-treated steel ratchet ring provide brute strength, but smart details like a pawl angle that removes stress from the bearings and a flange design that balances spoke tension make this hub even more durable. And with 8.18° engagement, the E-sync hub is as fast as it is strong.

Available with Shimano Micro Spline, HG, or SRAM XDR freehub, and 6-bolt or Centerlock brake style, with options to fit all popular axle configurations.Tubeless ready with rim tape installed.

The Flow EX3 is the evolution of the Flow line for aggressive riding. Every World Cup DH and Enduro World Series win, every hour of testing, riding, and improving, it’s all here in the Flow EX3. This wheel erases limitations.

Technology

Stan's No Tubes Bead Socket Technology (BST)

Bead Socket Technology rims are designed to match the shape of your tire's bead to create a safer and more secure air tight interface. Unlike the secure “socket” of a BST design, conventional rim shapes drive the bead of the tire down deeper into the rim, putting pressure on sidewalls that causes friction, restricts tire volume, and keeps the interface from forming a sufficient seal for tubeless use. BST rims secure the bead of the tire, not the sidewall, creating an air tight seal while allowing the tire's sidewall to expand to its true, rounder, more effective profile. The result is more traction and less rolling resistance. With lower-profile, less vulnerable sidewalls, our BST rims are also lighter and stronger by design, and accelerate more quickly.

Stan's No Tubes WideRight Rim Design

The most important piece to the bicycle-terrain interaction is the contact patch between the tire and terrain, so tire profile and tire pressure play huge roles in bicycle performance and overall handling. But many rims just don't work well with the tires we're all using. Rims that are too narrow fail to offer sufficient sidewall support and protection to your tires and create a less stable shape. The result is less control in the corners, less traction on climbs, and more rolling resistance. Rims that are too wide also distort the tire profile, decreasing traction and control and driving impacts directly into the rim, negating the impact absorbing advantages of a tire's volume. Our WideRight rim widths are designed to strike the perfect balance between tire volume and sidewall function.

The Lightbulb.

Too narrow. Tire is constricted, robbing traction and cornering stability.

The Bell.

Too wide. Tire beads are pushed wide, deforming intended tire shape and tread design. Tire has less ability to absorb impacts and less cornering control, and sidewalls are exposed to cuts.

WideRight.

The perfect width. Tire expands to full volume without distortion. Tread pattern and side knobs are in the correct position for cornering, maximum traction and control with minimum rolling resistance.

WideRight rim profiles allow the tire to achieve its proper shape, and that's the foundation for a great handling, fast-rolling, and responsive bike.

Stan's WideRight system makes it easy to find the perfect rim width for the tire size and volume you ride. Too narrow of an internal rim mixed with a high sidewall design gives you a "light bulb" tire profile while an ultra wide rim on a narrower tire will give you a flat to "bell shaped" tire profile. Neither of these scenarios give optimal tire profiles nor allows the tire to perform as intended.

WideRight profiles provide the optimal volume without distorting the tread pattern or the side knobs so each part of the tire is in the correct position for rolling and cornering, allowing for maximum traction and control as well as offering minimal rolling resistance. The WideRight profile advantages don't stop there. Proper tire profiles not only allow for optimal tire performance but also allow the tire to do its secondary job of protecting the rim as well as the tire's sidewall. A flat or bell-shaped tire profile leaves the tire exposed to sidewall cuts and creates undue chances for rim damage.

Key benefits:

Optimises tire profiles
Maximizes traction
Properly distributes tire volume
Promotes the design intent of the tire profile and overall tire performance
Reduces tire pinch flats and sidewall damage
Allows tire to protect rim

E-Sync Hubs

Strength and durability were the main priority in designing E-sync hubs. Designed for more aggressive riders, wet environments, and the added torque and weight stresses of eBikes, E-sync hubs are built to last. The cromoly axle and Enduro sealed bearings of the E-sync can handle high loads and harsh conditions, and the double row Enduro bearing at the heart of the E-sync's freehub lasts longer than simply pairing two standard cartridge bearings side-by-side. The 6066 alloy shell and heat-treated steel ratchet ring add further durability, allowing the E-sync to boast a 47% higher max torque capacity than previous Neo hubs.

Beyond materials, the E-sync's durability and reliable engagement relies on smart details like a pawl angle and new longer pawl shape that channels stress away from the bearings and into the strongest, most reinforced areas to drastically improve both bearing life and overall hub durability. The E-sync's flange spacing and design also balances spoke tension between each side of the rim better. It all works together to make the E-sync hub stronger and more durable. And with 8.18° engagement, the E-sync hub is as fast as it is strong.

Available with Shimano Micro Spline, HG, or SRAM XDR freehub, and 6-bolt or Centerlock brake style, with options to fit all popular axle configurations.

Key benefits:

Cromoly axle and full Enduro bearings with double-row freehub bearing for years of trouble-free performance and eBike compatibility
Fast 8.18° engagement with reinforced high-torque capable pawls
Matched wheelsets use traditional J-bend lacing and share a single spoke length for easy serviceability
Backwards-compatible to accept Neo end caps, offering options to fit every popular axle style

Features

Reinforced 29mm wide rim shape built to handle AM, DH, Enduro and anything else
Proven with wins at World Cup DH and Enduro World Series events
Tiebeam triple cavity 6069 welded aluminum rim resists dents and air loss during impacts
E-sync hubs offer fast 8.18° engagement with reinforced pawls
Enduro bearings with double-row freehub bearing and cromoly axle offer 47% increase in max torque capacity over Neo hubs
Matched wheelsets use traditional J-bend lacing and share a single spoke length for easy serviceability
Connection program includes crash replacement coverage, 3-year E-sync hub warranty, 3-year rim warranty, and $10 donation to trail maintenance or advocacy group of your choice