Ride faster over harsh gravel tracks while reducing arm fatigue. The ultra-wide 32 mm internal rim bed paired with widened rim edges eliminates tire lightbulbing on high-volume gravel tires and drastically reduces pinch-flat risks.
Maintain your speed on the most punishing sections of Unbound or Traka. The rim profile seamlessly matches the footprint of 40 to 60 mm gravel tires to eliminate aerodynamic turbulence. The widened rim bed lets you run lower tire pressures without experiencing tire squirm under hard cornering loads.
Key Features
Aerodynamic optimization: the 32 mm internal rim width creates a seamless transition with the tire sidewall to reduce high-speed drag.
Pinch-flat protection: extra-thick hookless rim walls redistribute impact forces to prevent tire casing cuts when bottoming out on rocks.
Precise hub engagement: the ZR1 DB hub provides 66 points of engagement for instant power transfer out of corners or on technical climbs.
Lower tire pressure: increased air volume dampens trail vibrations and maintains traction on loose rocks without the risk of burping.
Compatibility
Designed for modern gravel bikes with disc brakes (Center Lock mount) and thru-axles (12x100 mm front, 12x142 mm rear). Compatible with approved Tubeless Ready tires in 40 mm to 60 mm widths (hookless rim profile).
Freehub bodies available in SRAM XDR or Shimano/SRAM 11-speed options. Installation requires sealant and dedicated tubeless valves. Need guidance? Contact us.
Technical Specifications
Product Name
303 SW XPLR Disc Tubeless
Brand
ZIPP
Weight
1452 g per pair
Activity
Cycling
Discipline
Gravel
Color
Black (UD fiber, Impress valve graphic, adhesive decals)
Material
Carbon (Rim) / Aluminum (Hubs)
Wheel Size
700c
Rim Depth
54 mm
Internal Width
32 mm
Maximum External Width
40 mm
Rim Profile
Symmetrical, Hookless
Tire Compatibility
Approved Tubeless Ready tires (40c to 61c) with tube or sealant
