FEATURES:
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Reinforced 29mm wide rim shape built to handle AM, DH, Enduro and anything else
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Proven with wins at World Cup DH and Enduro World Series events
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Tiebeam triple cavity 6069 welded aluminum rim resists dents and air loss during impacts
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E-sync hubs offer fast 8.18° engagement with reinforced pawls
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Enduro bearings with double-row freehub bearing and cromoly axle offer 47% increase in max torque capacity over Neo hubs
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Matched wheelsets use traditional J-bend lacing and share a single spoke length for easy serviceability
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Connection program includes crash replacement coverage, 7-year carbon rim warranty, and $10 donation to trail maintenance or advocacy group of your choice
DESCRIPTION:
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.
WHAT'S INCLUDED:
Flow EX3 wheels include pre-installed tape for tubeless use and presta valves.
| Rim Internal Width: | 29.0mm | Rim Weight: | 580g (27.5") / 618g (29") | |
| Rim External Width: | 32.6mm | Wheelset Weight: | 2018g (27.5") / 2115g (29") | |
| Rim Depth: | 17.9mm | Front Wheel Weight: | 932g (27.5") / 981g (29") | |
| Spokes: | Sapim D-Light Black 2.0/1.65/2.0mm | Rear Wheel Weight: | 1085g (27.5") / 1134g (29") | |
| Nipples: | Sapim Secure Lock Alloy Black | ERD: | 564mm (27.5") / 602mm (29") | |
| Hub: | Neo OS with Durasync | ETRTO: | 584x29.0 (27.5") / 622x29.0 (29") | |
| Hole Count: | 32-hole | ISO: | 27.5"x32.6mm / 29"x32.6mm | |
| Rim Material: | 6069 Aluminum Alloy | Tape: | 30mm | |
| Rim Color: | Black Bead Blasted Finish (BBQ) | Max Spoke Tension: | 125kgf (1225N) | |
| Hub Color: | Black | Max Pressure with 2.4" Tire: | 37psi | |
| Brakes: | Disc Only | Max Pressure with 2.8" Tire: | 26psi | |
| Valve: | 35mm Presta | Max Rider Weight: | 250lbs (113 kilo) |
3-YEAR ALUMINUM RIM WARRANTY AND CRASH REPLACEMENT POLICY
3-YEAR ALUMINUM RIM WARRANTY:
Stan’s MK4, S2, and EX3 series aluminum rims are covered under a 3-year warranty against manufacturing defects from the original purchase date. Warranty does not cover abuse, misuse, consequential damages, normal wear and tear, damage resulting from crashes, or improper installation. Warranties only apply to the original owner. If a product is found to be defective, a free repair or replacement will be provided at the sole discretion of Stan’s. Purchases made through unauthorized resellers such as eBay, Alibaba, Amazon or similar resale sites are not supported under our warranty policy.
ALUMINUM RIM WARRANTY PROCESS:
- Retain a copy of the original proof of purchase (i.e. Itemized receipt or invoice)
- Submit your claim via an authorized Stan’s dealer with your proof of purchase or contact us at warranty@notubes.com with a description of your issue, a photo that helps illustrate the issue, and your proof of purchase
Note: For warranty and crash replacement inquires outside the United States, please contact your local dealer or distributor - The dealer will contact Stan’s or the local distributor and arrange for repair/replacement, or, if you’ve contacted us directly, we will work quickly to reply to your email with instructions
- If you have contacted Stan’s directly regarding a wheelset warranty, and your approved request requires a return, Stan’s will provide you with a shipping label for return, free labor for your wheel rebuild, and return shipping
1-YEAR ALUMINUM RIM CRASH REPLACEMENT:
Should you have the unfortunate experience of crashing and damaging your Stan’s aluminum rims, we want nothing more than to help you get back on the bike as quickly as possible. The Crash Replacement Policy covers the rims for a period of 1 year from the original purchase date against damage caused during normal operation of the bicycle, including racing. Crash replacement aluminum rim pricing is 50% off the MSRP of the exact or comparable product at the time of the claim. If necessary, spokes, nipples, tape, and costs associated with any build labor performed by Stan’s will be provided at a discount.
ALUMINUM RIM CRASH REPLACEMENT PROCESS:
- Retain a copy of original proof of purchase (i.e. Itemized receipt or invoice)
Note: Reply to the registration confirmation email with a picture or scan of your receipt and we’ll keep it on file for you in the event of a future claim - Submit your request via an authorized Stan’s dealer with your proof of purchase or contact us at warranty@notubes.com with a description of your issue, a photo that helps illustrate the issue, and your proof of purchase
Note: For warranty and crash replacement inquires outside the United States, please contact your local dealer or distributor - The dealer will contact Stan’s or the local distributor and arrange for repair/replacement, or, if you’ve contacted us directly, we will work quickly to reply to your email with instructions
- If you have contacted Stan’s directly regarding crash replacement and your request has been approved you will be charged crash replacement pricing for your product and standard return shipping fees.
ALUMINUM RIM WARRANTY AND CRASH REPLACEMENT CONDITIONS:
- Warranty and crash replacement are valid only for the original owner and are not transferrable.
- Warranty does not cover the following:
a. Damage sustained during shipment
b. Products on which serial numbers, production lot codes/date codes or other identifying marks have been removed
c. Normal wear and tear, misuse, incorrect installation or improper maintenance, use of incompatible parts or components, accident or crash damage, negligence, modifications not recommended or approved by Stan’s
d. Labor costs for work not performed by Stan’s
e. Shipping costs to Stan’s or local distributor
f. Instances determined to be cosmetic only
g. Any representation or warranty expressed or implied by a third party beyond the provisions of this stated policy
h. Purchases made through unauthorized resellers such as eBay, Alibaba, Amazon or similar resale sites - Crash replacement does not cover the following:
a. Normal wear and tear expected with the use of high-quality mountain bike components
b. Products on which the serial numbers, production lot codes or other identifying marks have been removed
c. Misuse, incorrect installation or improper maintenance, use of incompatible parts or components, negligence, modifications not recommended or approved by Stan’s
d. Instances determined to be cosmetic only
e. Shipping costs to or from Stan’s or the local distributor
f. Labor costs associated with removing the wheels and any associated components including but not limited to rotors, tires, cassette, computer magnets, etc. from the bicycle or wheel
E-SYNC HUB WARRANTY POLICY
E-SYNC 3-YEAR HUB WARRANTY:
Stan’s E-sync hubs are covered by a 3-year warranty against manufacturing defects. Warranty does not cover abuse, misuse, consequential damage resulting from lack of or improper maintenance, normal wear and tear, and improper installation. Warranty applies only to the original owner with valid sales receipt. If a product is found to be defective, a free repair or replacement will be provided at the sole discretion of Stan’s.
HUB WARRANTY PROCESS:
- Retain a copy of the original proof of purchase (i.e. Itemized receipt or invoice)
- Submit your claim via an authorized Stan’s dealer with your proof of purchase or contact us at warranty@notubes.com with a description of your issue, a photo that helps illustrate the issue, and your proof of purchase
Note: For warranty and crash replacement inquires outside the United States, please contact your local dealer or distributor - The dealer will contact Stan’s NoTubes or the local distributor and arrange for repair/replacement, or, if you’ve contacted us directly, we will work quickly to reply to your email with instructions
- If you have contacted Stan’s directly regarding a wheelset warranty, and your approved request requires a return, Stan’s will provide you with a shipping label for return, free labor for your wheel rebuild, and return shipping
HUB WARRANTY CONDITIONS:
- Warranty is valid only for the original owner and is not transferrable.
- Warranty does not cover the following:
a. Damage sustained during shipment
b. Products on which serial numbers, production lot codes/date codes or other identifying marks have been removed
c. Normal wear and tear, misuse, incorrect installation or improper maintenance, use of incompatible parts or components, accident or crash damage, negligence, modifications not recommended or approved by Stan’s
d. Labor costs for work not performed by Stan’s
e. Shipping costs to Stan’s or local distributor
f. Instances determined to be cosmetic only
g. Any representation or warranty expressed or implied by a third party beyond the provisions of this stated policy
Our Technology
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Learn MoreOur race-proven Neo hubs with Durasync & Neo Ultimate hubs with Speedsync offer the durability and faster engagement to handle today's most difficult trails and more aggressive riding style.