The definition of “road cycling” now includes gravel and dirt as well as pavement. At the same time, bikes are evolving to meet the fit requirements of smaller riders. Meeting these two distinct needs was the driving force behind the Zipp 303 Firecrest 650B Tubeless Disc-brake wheel.
The smaller rim size provides room within frames and forks for larger tires, 28mm or wider, that deliver increased comfort, compliance, and cornering performance. With more tire between the rim and the ground, the overall wheel diameter including the tire is similar to a standard 700C wheel and road tire combination. Back on the pavement, the 650B is a better fitting wheel for smaller athletes riding compatible frames. For too long, many smaller cyclists have trained and raced on standard 700c wheels, losing out on the advantages of a proper fitting wheel such as improved handling and the elimination of front wheel-toe overlap. At the center of the 303 650B Firecrest Tubeless is a versatile and durable hubset, the German-engineered ZR1 DB.
ABLC Sawtooth
Zipp’s Sawtooth dimple design consists of 12 nodes that are specifically clocked to start aerodynamic shearing at a rate of 50hz at a rider speed of 20mph. Sawtooth accomplishes this by inducing small sheet vortices that shed at a low magnitude, but at a higher natural frequency, thus decreasing the laminar bubble effect on the aerodynamically shielded side of the rim’s profile to further reduce high yaw drag and improve crosswind stability.
Choosing the best tubeless tire for your Zipp road wheels is simple now. See the specific guidelines on selecting a tubeless tire for Zipp road wheels with a hookless rim-tire interface, along with a list of approved tires by make and model: ZIPP's Hookless Tire Compatibility Guide
Scope of delivery: wheel incl. rim tape, 12mm endcaps, Centerlock lockring
Hubs: | ZR1 |
Rims: | UD Carbon |
Color: | Black |
Etrto: | 21-584 |
Spokes: | SAPIM CX-Sprint |
Nipples: | Sapim Secure Lock |
Activity: | Cycling |
Material: | Carbon |
Item code: | ZIP528574 |
Rim width: | 30mm |
Tire type: | Wire Bead Tire, Folding Tire, Tubeless Ready |
Model year: | 2022 |
Wheel size: | 27,5" / 650B (584mm) |
Air pressure: | 8.6bar |
Manufacturer: | ZIPP |
Product name: | ZIPP 303 Firecrest Carbon 27.5 Inch Front Wheel - Tubeless - Centerlock - 12x100mm - black |
Weight limit: | 113kg |
Axle standard: | 12x100mm (FW) |
Wheel version: | Front Wheel, Standard Wheel |
Braking system: | Centerlock/AFS |
Usage bikesport: | Road Bike |
Manufacturer page: | http://www.zipp.com |
Rim profile height: | 45mm |
Inner profile width: | 21mm |
Number of spoke holes: | 24 |
Manufacturer item code: | 00.1918.608.000 |