SOC 2019: e*thirteen XCXr 1x World’s Lightest Gravel Cranks!, Chainrings & Cassettes

“Since 2001, the world’s fastest riders have been winning world championships equipped with e*thirteen’s dependable, lightweight chainguides. Through the application of uncompromising engineering discipline, e*thirteen is not only the market leader in chain retention, but a leader in high-performance drivetrain and wheels. A small, rider-owned company with laser-sharp focus on improving the rider experience, e*thirteen brings you thoughtfully engineered, beautifully executed products.”

e*thirteen XCXr 1x cranks

According to e*thirteen, their new XCX carbon cranksets are the lightest production models you can buy. For the 1x crowd, you can rejoice, as they are 1x specific (sorry 2x fans), utilize a 30mm spindle and a self-extracting bolt.

e*thirteen XCXr 1x cranks

A demonstration of their supreme lightness:

  • XCXr Gravel Crank with e*thirteen 38T XCX chainring = 398 grams.
  • SRAM Force 1 Crank with 42T rings = 611 grams.

XCXr Gravel Crank Specs:

  • Spindle: 30mm x 68mm
  • Q Factor: 152.6mm
  • Chainline: 47mm (1x)
  • Lengths: 170mm, 172.5mm and 175mm
  • Price: $US399

Available in July of 2019.

e*thirteen XCX Chainrings and Cassettes

The e*thirteen gravel cassettes all start with a 9 tooth cog, in 9-34, 9-39 and 9-42. All variants are 11-speed compatible, with a mix of 10 steel cogs and 1 in aluminium.

XCX Plus Cassette Specs:

  • XCX Plus 9-34 – 9, 11, 13, 15, 17, 19, 21, 24, 27, 30, 34 (271 grams), range = 378%, Price: $US 209
  • XCX Plus 9-39 – 9, 11, 13, 15, 17, 19, 21, 24, 28, 33, 39 (315 grams), range = 433%, Price: $US 249
  • XCX Plus 9-42 – 9, 11, 13, 15, 17, 20, 23, 27, 31, 36, 42 (330 grams), range = 467%, Price: $US 269
  • All cassettes feature 1 aluminium cog, 10 steel cogs.
  • Compatible with XD or XDR drivers (spacer included)

All are available now barring the 9-42, coming in June 2019.

e*thirteen XCXr 1x cranks

Finally, the XCX chainrings become ultralight thanks to some handy machine work, and are available in 32, 34, 36, 38, 40 and 42 teeth.

XCX Ultralight Chainring Specs:

  • 30T (49 grams), 32T (54 grams), 34T (58 grams), 36T (64 grams), 38T (73 grams), 40T (84 grams), 42T (91 grams)
  • -5mm offset for Boost MTB/1x Gravel
  • Direct Mount and Dual Width
  • 10/11/12 speed Shimano and SRAM compatible
  • Price: $US 64.95 – 74.95

Available in July of 2019.

e*thirteen/By The Hive

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