MAGENE – EXAR – Karbon Jant Seti – Carbon Fiber Wheelset Ultra Series 2026 – DB405

The Magene EXAR Ultra DB405 (2025 Model) is a high-performance, disc-brake-only carbon fiber wheelset designed primarily for climbing and versatile road racing. It sits at the top of Magene’s EXAR hierarchy, emphasizing a “systematic design” where the rim, spokes, and hubs are engineered to work as a single unit.

???? Technical Specifications

The DB405 is characterized by its “staggered” rim depth, which balances aerodynamic stability with lightweight climbing prowess.

???? Key Performance Features

• Carbon Fiber Spokes: Using HI-MOD T800 carbon, these spokes are 30% lighter than top-tier steel spokes and offer 30% higher tensile strength. This results in exceptional lateral stiffness and immediate power transfer when sprinting or climbing out of the saddle.

• Staggered Rim Profile: The lower 40mm front rim improves handling and reduces “twitchiness” in crosswinds, while the deeper 45mm rear rim provides higher inertia and aerodynamic efficiency.

• Ceramic Bearings: Standard in the Ultra series, these reduce rolling resistance and are more resistant to corrosion compared to standard steel bearings, though they require high-precision maintenance.

• Wide Internal Channel: The 23mm internal width is “modern-wide,” allowing 28mm tires to sit more flush with the rim walls. This creates a more aerodynamic “U-shape” and allows for lower tire pressures, significantly increasing comfort.

???? Verdict

The DB405 Ultra is arguably the “sweet spot” in the Magene lineup for riders who live in hilly areas or want a “do-it-all” lightweight set. While the DB508 (50/58mm) is faster on flats, the DB405’s ~1,280g weight makes it a formidable climbing wheel that doesn’t feel sluggish in gusty conditions.