Zipp 303 XPLR SW Carbon Rear Bicycle Wheel

The Zipp 303 XPLR SW Carbon Rear Wheel is a 700c hookless carbon gravel race wheel. Zipp built it around a 32mm internal rim width and a 54mm-deep symmetrical profile. Zipp did not start from a road rim and widen it. It applied its Total System Efficiency approach to gravel, so the rim and tire are designed as one system that handles rolling resistance, vibration and aerodynamics together on rough surfaces.

The wide internal profile adds tire air volume, which lets riders run pressures under 30psi without tire squirm. Lower pressure lets the tire soak up surface vibration while keeping grip in corners and traction on climbs. The rim laces to Zipp's ZR1 Disc hub with 66 points of engagement, uses a Center Lock rotor interface and carries a lifetime warranty. Note that this wheel works only with Zipp-approved tires.

Who It's For

• Gravel racers and long-distance gravel riders running 40–61c tubeless tires

• Riders who already use, or plan to use, Zipp-approved tires. The Goodyear XPLR Slick and XPLR Inter were designed specifically for this rim.

• Riders on SRAM XDR or SRAM/Shimano Road drivetrains (a Campagnolo N3W driver is sold separately)

• Consider a different wheel if you want free choice of tires, ride tires narrower than 40c, need more than 50psi, or your total system weight is over 298 lbs / 135 kg

What to Look For

• Choose your tire before your wheel. The hookless TSS rim accepts only approved TLR tires from 40c to 61c, set up with a tube or sealant. Check that your tire is on Zipp's approved list.

• Check rear frame clearance. The rim measures up to 40mm wide outside. Confirm that your frame clears the tire size you plan to run.

• Specify the driver body and brake interface. Choose XDR or SRAM/Shimano Road when you order. The wheel ships with 12mm end caps and a Center Lock lockring.

Key Features

Rim: The 32mm internal, 54mm-deep hookless rim is the core of the design. The straight-side (TSS) bead wall gives tires a wide, supported base at low pressure. It is also why tire compatibility is restricted and pressure is capped at 50psi / 3.45 bar. Zipp shaped the deep symmetrical profile to blend smoothly into the tire's sidewall for better aerodynamic efficiency on gravel.

Hub: The ZR1 Disc hub is engineered in Germany. Zipp redesigned its seals for better durability. Its 66 points of engagement pick up drive faster when you restart on a steep pitch or put power down out of a technical corner. The hub runs on custom stainless steel 61903 bearings.

Brake interface: The Center Lock rotor mount comes with the lockring included.

Service details: Drive-side spokes are 258mm and 260mm, and non-drive-side spokes are 256mm and 258mm. These are worth keeping on hand for trailside or in-shop truing. Maximum recommended system weight is 298 lbs / 135 kg.

Warranty: Zipp's lifetime warranty covers the wheel.

Rider Intent Summary

• Biggest strengths: The 32mm internal width supports low-pressure grip and comfort, the 66-point hub engages quickly, and the lifetime warranty backs it up.

• Tradeoffs: It takes approved tires only, pressure tops out at 50psi, and this is a rear wheel only.

• What makes it different: Zipp designed it as a gravel rim-and-tire system from the start, not as a road rim modified for gravel.

Victory's Take

At Victory Bicycle Studio, we see the 303 XPLR SW as the right rear wheel for a rider who has committed to wide gravel tires and wants a rim built around them. Settle on your tire first, and the rest of the setup is easy.