Based on the legendary Flow rims that have won World Cup DH and Enduro World Series events, Flow S2 wheelsets are a great upgrade for riders looking for better tubeless performance and excellent durability. Patented Bead Socket Technology means easier tubeless inflation and more confidence on the trail. An emphasis on durability means a reinforced and eyeletted spoke bed, a quality sleeved joint, and 6061 alloy construction. A 30mm internal width makes the Flow S2 ideal for 2.3-2.6” tires.

Durability, serviceability, and value: every E-sync hub is built around these three priorities. From cromoly steel axles and double row Enduro bearings, to special heat treated steel ratchet rings and a pawl design that reduces stress on freehub and bearings, every detail of the E-sync hub is designed for durability. E-sync hubs are also designed for fast engagement, with four pawls needing only 8.18° of rotation to engage simultaneously and put power to the ground. E-sync hubs are perfect for eBikes and riders who demand stronger components, but still want the fast engagement of a high-performance hub.

The Flow S2 wheelset is available with Shimano Micro Spline, HG, or SRAM XDR freehub, and 6-bolt brake style, with options to fit all popular axle configurations.Tubeless ready with rim tape comes pre-installed. S2 wheels are built to last long, but also be easy to service and update with changing axle and cassette standards. Traditional J-bend spokes and lacing have a proven history of ride quality, durability, and serviceability, and matched S2 wheelsets all use a single spoke length, making it even easier to own and service your S2 wheelset for years. The Flow S2 with E-sync hub is the perfect wheelset for riders who value durability and tubeless performance.

FEATURES

• Low-profile 30mm internal width optimizes tire shape, traction, and control for 2.3-2.6” tires
• 6061 aluminum with sleeved joint and stainless steel rim eyelets
• Patented BST low-profile rim shape for easy tubeless inflation and the most reliable seal
• Matched wheelsets use traditional J-bend lacing and share a single spoke length for easy serviceability
• 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
• Connection program includes 3-year E-sync hub Warranty, 3-year S2 rim Warranty, 1-year crash replacement, and $10 donation to trail maintenance or advocacy group of your choice

Tubeless tape installed, requires additional valve stems.

These videos offer step-by-step processes for maintaining and servicing Stan's NoTubes E-sync hubs.

Warranty

2-YEAR ALUMINUM RIM Warranty AND CRASH REPLACEMENT POLICY

2-YEAR ALUMINUM RIM Warranty:
All aluminum rims are covered under a 2-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:

1. Retain a copy of the original proof of purchase (i.e. Itemized receipt or invoice)
2. 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
3. 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
4. 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:

1. 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
2. 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
3. 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
4. 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:

1. Warranty and crash replacement are valid only for the original owner and are not transferrable.
2. 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
3. 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:

1. Retain a copy of the original proof of purchase (i.e. Itemized receipt or invoice)
2. 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
3. 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
4. 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:

1. Warranty is valid only for the original owner and is not transferrable.
2. 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