Shimano SM-AX56-B Rear Thru-Axle – 12×148 mm, 177 mm, Lightweight Hollow Design
Upgrade your mountain bike’s rear end with the Shimano SM‑AX56‑B rear E‑Thru axle—a precision-crafted component designed for modern disc brake frames with 12×148 mm spacing. Built with a hollow aluminum body featuring an internal cam quick-release mechanism, this axle offers improved rigidity and swift wheel changes while maintaining a lightweight profile (~77 g).
Key Specifications: • Overall length: 177 mm • Thread pitch: M12 × 1.5 (approx. 15 mm thread) • Hub spacing: 12 × 148 mm (through-axle standard) • Weight: ~77 g • Shimano part number: E‑SMAX56B
