Zipp 303 SW 700c Road Wheel – Rear
Blending cutting-edge tech with real-world performance, the Zipp 303 SW Rear Wheel is your go-anywhere, crush-anything wheel upgrade. It’s built to take on everything from tarmac and cobbles to gravel and cyclocross—without flinching. With a wide rim profile for increased efficiency, integrated AXS pressure sensor, and a bombproof ZR1 hub with rapid engagement, this rear wheel doesn’t just roll—it rips.

Back-End Brilliance
The 303 SW rear wheel features a 25mm internal width and a hookless carbon rim that supports wider tubeless tires at lower pressures. That means less rolling resistance, more comfort, and serious power transfer. The updated carbon layup improves impact resistance by 10%, while the 6-pawl freehub with 66 points of engagement gives you lightning-fast response.

Smart Pressure Monitoring On The Go
The integrated AXS tire pressure sensor gives you live data for on-the-fly adjustments—no fumbling with gauges. It tracks performance ride after ride and helps you keep things dialed for max efficiency and speed.

Key Features
– Carbon hookless (TSS) rim construction with 40mm depth
– AXS integrated pressure sensor for real-time tire pressure feedback
– 25mm internal rim width ideal for 30–44mm tires (optimal: 35mm)
– ZR1 aluminum hub with 6-pawl freehub (66 engagement points)
– Centerlock disc brake interface
– Double-crossed aero J-bend spokes with 2.0x16mm nipples
– Durable stainless steel cartridge bearings
– Total System Efficiency (TSE) design: maximizes speed, reduces fatigue
– Approx. weight: 1440g (wheelset, manufacturer spec)
– Max system weight: 114kg
– Max tire pressure:
 – 30–34mm: 4.5 bar / 65 psi
 – 35–39mm: 4 bar / 58 psi
 – 40–44mm: 3.5 bar / 51 psi

Specs
– Rim Material: Carbon
– Wheel Size: 700c / 28"
– Rim Width: 33.5mm external / 25mm internal
– Rim Depth: 40mm
– Tire Type: Tubeless Only (TSS – Tubeless Straight Side)
– Hub: ZR1 rear hub, aluminum, angled flanges
– Freehub: 6-pawl with 66 points of engagement
– Spokes: 20x J-Bend, aero, stainless steel
– Brake Compatibility: Disc (Centerlock)
– Axle: 12x142mm Thru-Axle
– Color: Black
– Warranty: Unlimited structural warranty on wheels; 2-year SRAM warranty on AXS sensor

Why It’s Great
From race days to rough days, the 303 SW Rear Wheel gives you every advantage—responsiveness, reliability, and ride-tuned performance. Add in smart pressure monitoring, and you’ve got a wheel that adapts as fast as you do.