SRAM XG-1371 E1 13-speed Cassette

The SRAM XG-1371 E1 13-speed Cassette is SRAM's dedicated gravel cassette built around the XPLR 1x drivetrain platform. Designed for riders who want a single chainring setup without sacrificing range, it runs a 10-46T spread across 13 speeds — enough to handle punishing climbs and fast gravel descents on the same ride. It slots into the XPLR ecosystem alongside SRAM's 13-speed rear derailleurs, giving you a purpose-built solution rather than a retrofit.

That 460 percent gear range is the headline figure, but what matters on the road — or the gravel — is how the cassette gets there. SRAM has designed the 13-speed layout to keep the jumps between gears consistent, so you're not suddenly losing momentum when you shift on a steep pitch. Compatibility is specific: this cassette requires an XDR driver body and is intended for use with SRAM Flattop chains, keeping it firmly within the XPLR ecosystem. The mixed-material construction — steel on the harder-wearing smaller cogs, paired with an aluminium carrier on the larger sprockets — is designed to balance durability with weight savings where it counts most.

SRAM XG-1371 E1 13-speed Cassette Specs at a Glance

• Speed: 13-speed
• Range: 10-46T
• Gear Range: 460 percent
• Driver Body Compatibility: XDR
• Chain Compatibility: SRAM Flattop
• Derailleur Compatibility: SRAM XPLR 1x 13-speed
• Color: Black / Silver
• SKU: 00.2418.160.000

Design Benefits

1. Wide range without wide gaps: The 13-speed layout distributes the 10-46T range across more steps than a 12-speed equivalent, which means the jumps between ratios stay manageable even as you approach the larger cogs — useful on sustained climbs where cadence control matters.
2. Ecosystem compatibility: Built specifically for SRAM's XPLR platform, the XG-1371 E1 is designed to work in close coordination with XPLR rear derailleurs and Flattop chains. Running a matched system means shift performance is optimized from the ground up, rather than relying on cross-compatibility workarounds.
3. XDR driver body mounting: The XDR interface is SRAM's road and gravel-specific driver body standard, offering a secure, precise fit on compatible hubs. If your wheel is already set up with an XDR freehub, this cassette drops straight in without adapters.