ONEAER GC4 Carbon Gravel Wheelset

Overview & Key Features
The ONEAER GC4 is a high-performance carbon gravel wheelset designed to conquer demanding off-road conditions with confidence. With 42mm deep rims, 25mm internal width, and tubeless compatibility, it provides excellent support for wider gravel tires while maintaining low weight at just 1390g.

Choose between the responsive ONEAER RCS hub or the CS version with premium Ceramic Speed bearings, offering up to 5x the bearing life and ultra-low rolling resistance. Built for strength, speed, and long-distance durability, the GC4 is the ideal companion for gravel racers and adventure riders alike.

Rim Specifications

• Material: 100% Carbon Fiber
• Rim Depth: 42mm
• External Width: 30mm
• Internal Width: 25mm
• Tubeless Ready: Yes (rim tape required)
• Tire Compatibility: 700c x 30–40c
• Maximum Tire Pressure: 85 PSI / 5.8 bar
• Maximum Rider Weight: 120 kg
• Inner Tube Compatible: Yes

Hub & Bearing System

• Model Options:
  • ONEAER RCS
  • ONEAER RCS CS (with CeramicSpeed Bearings)
• Type: J-bend & Straight Pull combination
• Axle Compatibility: 12 x 100mm (front), 12 x 142mm (rear)
• Brake Interface: Center Lock
• Freehub System: Rapid Clutch System (6-pawl, 120 engagement points)
• Cassette Compatibility:
  • Shimano 11–12-speed
  • SRAM XDR 12-speed
• Bearing Performance (RCS CS):
  • 400% smoother
  • 128% harder and 58% lighter than standard bearings
  • 3–5x longer life than industry standard

Spokes & Lacing

• Model: Pillar Wing21 Aero
• Material: Black Stainless (Silver spokes near valve for visual ID)
• Count: 24 front / 24 rear
• Nipples: DSN External Alloy
• Lacing Design:
  • Mixed J-bend & Straight Pull
  • Optimized spoke tension and angle for durability and stiffness

Why Choose This Wheelset?
The GC4 brings the best of modern gravel tech with a lightweight carbon construction, wide internal width for tire support, and advanced hub design offering rapid engagement. The option to upgrade to CeramicSpeed bearings makes it one of the smoothest and most durable gravel wheels available. It’s fully hand-built with precision, quality controlled with traceable ID, and backed by lifetime support.

What’s Included in the Box?

• ONEAER GC4 Carbon Gravel Wheelset (Front & Rear)
• Tubeless Rim Tape (pre-installed)
• Tubeless Valves
• ID Certificate with QR Code for Specs
• User Manual

Tackle every gravel adventure with confidence. Choose your hub option and ride the ONEAER GC4 — lightweight, tough, and built for the long haul.