Built for speed on any surface, the Zipp 303 SW is your go-to wheelset for road, gravel, cobbles, and cyclocross. It features Zipp’s integrated AXS Wheel Sensor, letting you monitor tire pressure in real time—no valve-mounted devices needed. Check before you ride (green means go) and stay dialed in as conditions change. Inspired by the 303 XPLR, the 40mm-deep rim uses a wide design for better aerodynamics and lower rolling resistance with wider tires. The result? A smoother, faster ride with less fatigue. The improved carbon layup increases impact strength by nearly 10%, while keeping weight low. Optimized for 30–35mm tires (best with 35mm), the rim shape helps prevent pinch flats and improves tire-rim integration. At the core is the updated ZR1 hubset with stainless steel bearings for

Zipp 303 SW Rear Wheel 700c Disc Centerlock 12x142 40mm Depth Carbon

Reference Number: 6CS6CH

Experience unmatched speed, versatility, and innovation with the Zipp 303 SW Tubeless Disc B1 Rear Wheel - the ultimate choice for modern road, gravel, and cyclocross riders. Crafted with premium UD carbon, this 700c Rear Wheel combines lightweight performance with durability, making it ideal for a variety of surfaces. Its 40mm hookless rim features ABLC SawTooth Dimples for superior aerodynamics and crosswind stability, ensuring a smooth, fast ride even in gusty conditions.

Engineered with Zipp's cutting-edge technology, the 303 SW incorporates the integrated AXS Wheel Sensor, enabling real-time tire pressure monitoring without external devices. Stay ahead with instant alerts, optimizing your ride safety and efficiency. The rim's wide design (25mm internal width) enhances tire integration for better grip, lower rolling resistance, and reduced pinch flats, especially when paired with 30-35mm tubeless tires.

Performance is further enhanced by the ZR1 hubset with stainless steel bearings, delivering long-lasting, smooth performance. The wheel's Center Lock disc compatibility, combined with the XDR cassette body, ensures seamless integration with your disc brake system and drivetrain.

Built for durability and impact resistance, the carbon layup improves impact strength by nearly 10% while maintaining a lightweight profile - perfect for demanding terrains from asphalt to rugged gravel paths. Spoked with Sapim CX-Sprint spokes and featuring a 20-hole hub design, the Zipp 303 SW ensures reliable power transfer and responsiveness.

Key Features:

- Fully tubeless-ready 700c carbon Rear Wheel with 40mm depth for optimized aerodynamics and crosswind stability

- UD carbon hookless rim with ABLC SawTooth Dimples for low aerodynamic drag

- Integrated AXS Wheel Sensor for real-time tire pressure monitoring

- Light, durable ZR1 disc brake hub with stainless steel bearings and CX-Sprint spokes

- Optimized for 30-35mm tubeless tires; includes Center Lock rotor compatibility with lockring

- 12mm Thru-Axle with 142mm spacing and XDR cassette compatibility

- Enhanced impact strength with advanced carbon layup for durability on rough terrain

Whether you're racing on the pavement, exploring gravel roads, or conquering cyclocross courses, the Zipp 303 SW Tubeless Disc B1 Rear Wheel delivers speed, smart technology, and exceptional performance you can trust. Upgrade your riding experience with this innovative, high-performance Rear Wheel designed to keep you ahead of the pack.

  • - Crafted with high-strength UD Carbon and hookless rim construction, the Zipp 303 SW Tubeless Disc B1 Wheel offers superior durability, impact resistance, and a lightweight profile ideal for demanding road, gravel, and cyclocross riding.
  • - Advanced Performance & Engineering features include a 40mm-deep aerodynamic rim with ABLC SawTooth Dimples, optimized for 30-35mm tubeless tires, providing reduced rolling resistance, improved crosswind stability, and enhanced speed on various surfaces.
  • - Innovative Components & Technology: Equipped with the integrated Zipp AXS Wheel Sensor for real-time tire pressure monitoring, stainless steel-bearing ZR1 hubset for smooth, reliable performance, and CX-Sprint spokes for robust, lightweight strength.
  • - Versatile Style & Use Case: Designed for multi-surface riders seeking a high-performance, aerodynamic Rear Wheel capable of handling road, gravel, and cyclocross, with a sleek black carbon finish and center lock disc compatibility for quick, secure braking.
  • - Industry-Leading Features: Includes a XDR cassette body, tubeless-ready design, 142mm thru-axle compatibility with 12mm TA, and lockring included, making this Rear Wheel a seamless upgrade for serious cyclists demanding connectivity, low rolling resistance, and endurance for all adventures.
Item Specifications
Rear Axle12mm Thru x 142mm
Rim Width (Internal)25
Cassette Body Type XDR
ValvePresta
ColorCarbon
Wheel Size700c
Defined ColorCarbon
ISO Diameter622 / Road / 29"
Tire TypeTubeless Ready
Rim MaterialCarbon
Hub/Brake CompatibilityCenter-Lock Disc
Axle Type12mm TA
Cassette Body Type XD-R
Hub TypeZR1
Hub Spacing142mm
PositionRear
ColorBlack
Rim ConstructionDouble wall
Wheel Depth40mm
Hub Drilling20
Rim Width (Internal)25mm
Rim MaterialCarbon
Rim Model303 SW B1
Skewer IncludedNo
Spoke InterfaceSapim CX-Sprint
ValvePresta
Brake CompatibilityDisc Center Lock
Minimum Wheel Diameter700C / 622
Tire TypeTubeless
Rim Strip Width (mm)22-27.9mm

Why 365 Cycles?

365 Cycles is an Authorized Zipp Dealer, and we offer the Full Zipp Warranty!

Fast Shipping!

Professional Customer Service- available 7 days a week
Check out our 200,000+ amazing reviews!

365 Cycles delivers all your cycling needs fast! We don't waste time preparing your order. Our priority is to serve our customers first and foremost. If you need help picking the right product, have questions about bike component compatibility, or just want to geek out about bikes we are here 7 days a week! Simply put, we are bike experts from dirt to tarmac and want to make sure you get the full 365 Cycles experience when you shop with us.

At 365 Cycles our mission is to simplify the shopping experience. We want to get you the right product in a quick time frame and be here if you need help with questions, warranty, friend to talk to, etc.

We’re dedicated to building lasting relationships with our customers, communities, and team members. We combine the knowledge and service of a traditional bicycle shop with the convenience of shopping in your own home.





Shipping & Handling

Most orders placed during the workweek before 1:30 pm EST ship the same day, but in rare cases (peak season/holiday periods) handling time can take up to 48 hours. If you have questions regarding shipping estimates, please let us know prior to placing your order. There is a direct signature requirement for all orders over $500.

Please allow 1-2 business days for your order tracking to update.

  • Cut off for SAME DAY SHIPPING- 1:30 pm EST Monday - Friday
  • Friday afternoon -Sunday orders ship the following Monday
  • Due to carrier restrictions orders shipped to: PO Box, HI, AK, & PR 365 Cycles may use a comparable service to what was selected.

Combined Shipping Discounts

To offer customers savings on shipping, we offer discounts when shipping multiple items from our store. We cannot issue refunds on shipping once an order is finalized so please follow the 5 steps below and ask if you are having trouble with the discount before you make a purchase.

  1. Be sure you are using the US site: https://www.ebay.com
  2. Select Add to Cart (instead of Buy It Now) with items from our store 365Cycles
  3. Click on Proceed to Checkout. On the checkout page, the shipping service on each line item needs to match
  4. Compare First Class vs Priority as sometimes Priority can be cheaper and it gets to you faster!
  5. You’ll need to change the shipping method to Priority on every item in your cart before the rate can be calculated.

Returns

365 Cycles offers returns for 30 days on new items in their original, intact packaging. Return shipping for ALL orders are to be paid by the buyer. Please be sure to read our return policy entirely and if you have any questions, please contact Customer Service.

Full refunds are issued on items that are brand new and we are able to resell as new. 365 Cycles reserves the right to deny returns that are outside of policy including, but not limited to, used items, items missing original packaging, items with damaged manufacturer packaging, or international orders. Return orders must be shipped in a box or bubble mailer. Items shipped without an outer box will incur a restocking fee. You will be contacted through eBay if your return is ineligible for a full refund.

Returns must be initiated within 30 days from purchase date through your Purchase History under My eBay.

If we make an error in shipping, please contact us -- we will ship out the correct item and provide a free prepaid return label as quickly as possible!

Exchanges

If you need to exchange your order, the fastest and easiest way to do this is to reorder. We will ship your new order immediately and, in the meantime, please initiate a return through eBay on the original item and return it. We will refund for the returned item once it is received back.



RRWH3301 .

Company Details

365 Cycles
1180 Enterprise Rd
East Petersburg, PA 17520
United States

Connect With Us

Sign up for news, special offers & other good stuff!