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SRAM's RAIL line now goes two deep with the RAIL 50 and the new RAIL 40 announced here. Intended for all-mountain use, the RAIL 40s aren't as wide as most new wheels their category, but SRAM claims that they strike the right balance between weight, stiffness and width. More info below.

SRAM RAIL 40

SRAM RAIL 40 DETAILS


- Available in 27.5” and 29”
- Welded-joint aluminum rim, asymmetrical profile with TAPER CORE™ technology.
- UST Tubeless
- WIDE ANGLE™ profile—23mm
- SOLO SPOKE™—double butted spokes
- DOUBLE TIME™ ratchet mechanism for durable, quick engagement
- SPEEDBALL™ bearings
- Convertible axles:
  - Front Hub: QR 9x100, QR Torque Caps, 15x100, 15x100 Torque Caps, 20x110, 15x110, 15x110 Torque Caps
  - Rear Hub: QR 10x135, 12x135,12x135 XD, 12x142, 12x142 XD,12x148, 12x148 XD
- Available in XD™ or 10-spd driver body
- BOOST 148 compatible
- Weight: 1810g (27.5”), 1900g (29”) (pair, in lightest configuration).
- Pricing: $322 - $380 depending on size and configuration.