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The Zipp 303 S Tubeless Disc Brake Rear Bicycle Wheel provides today’s cyclists the versatility they demand with the speed they crave. Expanding greatly on its heritage of conquering the Spring Classics, the Zipp 303 S Tubeless Disc Brake Rear Bicycle Wheel maintains its ideal-for-every-terrain 45mm rim depth but adds a significantly wider internal width to provide greater performance and ride quality in almost every measurable way. Road bikes are more versatile than ever, no matter the road surface, but just as fast as before. The Zipp 303 S offers an entirely new rim profile and design to optimize rider performance on this new breed of bike. This wheel is tubeless for disc-brake bikes, allowing the ability to run wide tires at lower pressures for race-ready speed on or off the pavement. The Zipp 303 S is among Zipp's lightest wheels, optimized for top aero performance with a 28mm tire but capable of handling gravel tires up to 50mm wide. The 303 S borrows design concepts from the higher-level 303 Firecrest Tubeless Disc-brake wheels to gain speed through increased efficiency. That is achieved by creating a wheel with reduced: Wind resistance, rolling resistance, rider fatigue, and weight. The key innovation is in the 303 S Series’ rim design. Its 45mm rim depth is the same as its predecessor, the 302 Disc brake. But its rim width is 2mm wider, at 27mm, and its tire bed is a full 7mm wider, at 23mm. That rim platform is designed to be the fastest with a 28mm tire. The wide rim optimizes tire profile to allow lower tire pressure. That helps to reduce rolling resistance and provides a more compliant ride. The result of all this is a 10 percent watt savings vs. a top peer wheel in total power required to ride 40kph on a smooth flat road with a 28mm tire, according to internal Zipp testing. This groundbreaking wheelset also features all-new cosmetics, setting the rider apart from the pack, and comes at an attractive price.
Fuji, Giant, Specialized, BMC and Yuba bikes can only be picked up at our local store in Miami (5995 Sunset Drive, Miami, FL 33143). These brands do not allow any retailer to ship their bikes.
We accept Visa, Mastercard, American Express, or Discover (as well as PayPal and Apple Pay) as forms of payment. Once your order is placed, the payment method is charged immediately and we do aim on shipping most orders within 24 business hours.
Orders usually ship within one business day after being placed.
Indoor bikes (i.e. Stages SB20 and Wahoo Kickr) are considered overweight items by UPS and FedEx and cannot ship with regular UPS or FedEx Ground because they have a high probability of getting damaged. These indoor bikes must ship with Kitzuma using our white glove service. The Kitzuma White Glove Service for these oversized bikes is $350.
If you wish to cancel your order after we charge your payment method, please contact us by phone at 305-661-8363 or email at firstname.lastname@example.org and we will refund your payment method asap provided that your order has not yet shipped.
After placing an order, you will get a confirmation email within 10 minutes. If you place an order with us and don't get a confirmation email check your "junk" mail folder - it will probably be in there; otherwise, shoot us an email at email@example.com and we'll resend an order confirmation to your email immediately.
Orders may only be canceled or changed on the same calendar day they are placed, after which they are subject to the terms of our Return Policy.
When you place an order with us, you will receive a link that will allow you to track that order. Once your order ships, you will receive another email with tracking information (if available).
We want you to be happy with your order! With some exceptions (see below), if you are not satisfied with your order you may return it within 30 days of your receipt of merchandise for a refund of the purchase price less the original shipping fees. Returns can be shipped to:
Return shipping costs are the responsibility of the customer and any shipping fees originally paid on your order are non-refundable. Here are the exceptions and clarifications:
Returns can be shipped using UPS, FedEx, or USPS (we do not accept CODs). We will refund shipping costs on damaged or incorrect merchandise. Merchandise returned that appears used will be subject to a restocking fee. (Labor fees are not refundable, i.e., custom-built wheels.). Once we receive your return, we do aim to process it within 24 to 48 hours.
Mack Cycle expert mechanics assemble your new bike. Our assembled bike transport partner (Thru) will transport your new bike to you assembled and ready to ride!