DT Swiss XM 421 Rim

Color: Black
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As light as an all-mountain rim can get, the DT Swiss XM 421 rim is ready for any trail, no matter how rocky or steep.


  • Tubeless-ready rim can be used with or without tubes (tape, valves and sealant not included)
  • Welded rim joints offer the most reliable connection, and are used on all high-quality aluminum rims
  • Hooked/crochet tubeless interface supports fixation of the tire bead
  • Internal rim width: 25 mm
  • For use with disc brakes


View all DT Swiss Bike Rims

Technical Specs

Best Use

Mountain Biking

Tire Type

Tubeless Ready

Wheel Size

27.5 IN X 28H: 27.5 inches

29 IN X 28H: 29 inches

29 IN X 32H: 29 inches

Spoke Hole Count

27.5 IN X 28H: 28

29 IN X 28H: 28

29 IN X 32H: 32

Internal Rim Width

25 millimeters

External Rim Width

30 millimeters

Effective Rim Diameter

27.5 IN X 28H: 564 millimeters

29 IN X 28H: 602 millimeters

29 IN X 32H: 602 millimeters

Rim Depth

20 millimeters

Brake Compatibility

Disc Brake

Rim Material


Rim Bead Type


Rim Symmetry


Valve Type



27.5 IN X 28H: 440 grams

29 IN X 28H: 465 grams

29 IN X 32H: 465 grams

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