Indianapolis-based Zipp Speed Weaponry recently introduced its 1,530-gram/$2,400 Firecrest 202 and 1,645-gram, $2,400 303 carbon disc brake clincher wheelsets for cyclocross and road use, and today it’s introducing the 1,655-gram/$1,000 30 Course aluminum (above) tubeless-ready version, available in June. The design goal was low aerodynamic drag, greater stability and predictability in crosswinds, something we tested on California’s central coast Tuesday afternoon.
“Customers have been asking us for an aluminum, wide, tubeless wheelset, and the 30 Course is the answer,” said Jason Fowler, Zipp wheel product manager, during the company’s launch in Pismo Beach earlier this week. “This wheelset is targeted at the athlete riding cyclocross, mixed surface and gravel.”
Fowler emphasized that the new aluminum wheels are tubeless ready, though Zipp doesn’t make its own tire to go with it. “Zipp is not offering a tubeless tire today,” Fowler said with a smirk when asked if the company will be offering a larger diameter tire. Zipp already offers 700x23c clincher and tubular tires. This is Zipp’s first wheelset to be tubeless-ready, providing the ability to run lower tire pressures without risk of pinch flats.The 30 Course wheels include tubeless valves and carry a 250-pound rider weight limit plus five-year manufacturer’s warranty.
External width on the 30 Course rim is 25mm; internal is 21mm. According to Fowler, this means increased air volume, which spreads tire casing. This also helps increase the tire’s contact patch with the ground, while improving cornering grip.
While Zipp’s testing has shown a low aerodynamic drag with wider rims, speed demons will benefit from running 700x23c tires, but for more time savings—if that’s your aim—the Firecrest 202s are still faster. Fowler said there’s no tire size limit to the 30 Course rims; that’s based on your frameset’s clearances, but 700×23 is the smallest diameter allowed. Wheel depth is 26 mm, with 24 Sapim CX Ray spokes both front and rear.
New hub technology: 77/177D
The 30 Course wheels use the same 77/177D hubset as the Zipp 202 and 303 Firecrest disc-brake wheelsets, with bearing preload precision set, meaning no pre-load adjustment is needed. Additionally, this includes improved bearing protection and sealant, and for gravel and adventure riders, the hubs are thru-axle compatible. The 77/177D hubset comes with thru-axle end caps that can be swapped by hand. Front: 12×100 mm and 15×100 mm. Rear: 12×135 mm and 12×142 mm. Zipp also includes its newly designed quick-release skewers with a wider, more ergonomic handle to provide better leverage for opening and closing. When closed, lever contours neatly with the frame.
Zipp’s proprietary flange geometry and spoke-hole attachment pattern are designed for Sapim CX Ray spokes to maximize torsional and lateral stiffness without sacrificing weight or robustness. Also available with a 17 mm axle; a SRAM XD driver body for the 177D will be available separately.
77-177D Quick-Release Hubs
- 10 degrees or 36 points of engagement
- Weight: 145g/265 grams
- Compatible with SRAM, Shimano, Campagnolo and XD driver bodies
- Weight: 140 grams front, 260 grams rear
- Front: 12×100
Each wheel includes Zipp thru-axle end caps; one Zipp skewer; Zipp rim tape 700c X 20mm, and one Zipp tubeless valve (clincher). Rear wheel includes 1.85 mm cassette spacer 10-speed compatibility. The 30 Course Disc-brake Clincher rear wheel is available with a standard 10/11 speed driver body for SRAM/Shimano or for Campagnolo.
The 30 Course wheelset is made in SRAM’s Taiwan facility. A tubular version is also available. Stay tuned for a ride report and testing facility tour! Click the magnifying glass below to enlarge images in our gallery: