EXAR Ultra Carbon Road Disc Wheelset — High-Performance Carbon Fiber Wheels for Road Cycling
The EXAR Ultra series is a premium carbon road disc wheelset engineered for riders who demand speed, stability, and reliability. Built with HI-MOD carbon fiber rims and carbon spokes, the Ultra series delivers an exceptional strength-to-weight ratio while maintaining superior aerodynamic performance.




Key Features:
• HI-MOD Carbon Fiber Rims — Lightweight and stiff for maximum power transfer
• Carbon Fiber Spokes — 30% lighter than top steel spokes with 30% higher tensile strength
• Ceramic Bearings — Ultra-smooth rolling with lower resistance for faster rides
• 36T Flat Ratchet Hub Engagement — Instant, precise power pickup with minimal lag
• Mixed Depth Profile — Deeper rear rim for inertia and speed; shallower front rim for crosswind stability and control
• 23mm Internal Rim Width — Compatible with modern road tires for better cornering and comfort
• Tubeless Ready — Supports tubeless or clincher tire setups
• Disc Brake Compatible — Designed for modern disc brake road bikes
• UCI Impact Tested — Built to meet competitive racing standards
Available Models:
• DB405 — 40mm front / 45mm rear | Approx. 1,280–1,290g | Best for climbing and all-around riding
• DB508 — 50mm front / 58mm rear | Approx. 1,350–1,375g | Ideal balance of aero, weight, and handling
• DB607 — 60mm front / 67mm rear | Approx. 1,460g | Maximum aerodynamic efficiency for flat terrain
Includes: Tubeless rim tape, rim plugs, and valves.
Specifications:
• Material: HI-MOD Carbon Fiber
• Brake Type: Disc Brake
• Bearing: Ceramic Bearing
• Spokes: Carbon Fiber
• Hub Engagement: 36T Flat Ratchet
• Internal Rim Width: 23mm
• Axle Standard: 12x100mm (front) / 12x142mm (rear)
• Tire Type: Tubeless Ready / Clincher Compatible
• Freehub Options: Shimano HG / SRAM XDR