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Seatpost Upper Tube Assembly - 30.9/31.6, 100mm - (Includes Upper Tube, Keys, Clamp Bolt Plate, And Fill Valve) - Reverb AXS B1+ (2026+)
Designed specifically for RockShox Reverb AXS B1+ (2026+) models, this upper tube provides a perfect fit to ensure smooth, reliable seatpost operation.
Engineered with precision components and engineered fill valves, the upper tube enables easy maintenance and quick height adjustment on the trail or at the trailhead.
Suitable for 34.9mm seatpost diameters with a 125mm travel length, offering versatile performance for mountain bikers seeking reliable dropper post upgrades.
Featuring a sleek, modern design that complements your bike's aesthetics, this upper tube combines innovative technology with high-performance materials for long-lasting, trouble-free use.
