The DT Swiss XM 421 is a versatile aluminium all mountain rim that balances weight, strength and tyre support for trail riding day in, day out. The 25 mm internal width gives modern trail tyres a stable, well-shaped profile.

Highlights

  • 25 mm internal width gives trail tyres a stable, well-supported footprint
  • Tubeless ready (TC) hooked bead for confident low-pressure running
  • Welded joint and non-eyelet PHR interface for a light, durable build
  • Disc specific, with a Presta valve hole
  • E-bike approved for light electric trail use

Construction

The rim is welded for an even, consistent bead seat and uses the DT Swiss PHR (non-eyelet) spoke interface, which spreads spoke loads across a broad area so wall thickness stays low without losing strength.

Compatibility & fit

This is a 29" (622) rim drilled for 28 spokes, suitable for disc-brake trail and all mountain wheel builds. It is hooked and tubeless ready (TC) and takes a Presta valve. Pair with compatible DT Swiss spokes, nipples and PHR washers for the intended build.

DT Swiss covers this rim with a 24-month warranty against material and manufacturing defects from the date of purchase. Normal wear items, including tubeless tape, are not covered. The DT Swiss crash-replacement (Fair Share) programme applies to carbon rims only and does not apply to this aluminium rim.

For any warranty support, please return the item to Tune Cycles and our team will handle the claim on your behalf.

  • Discipline: all mountain / trail
  • Aluminium rim
  • 29" (622) diameter
  • 25 mm internal width, 30 mm outer width
  • 20 mm rim depth
  • 28 spoke holes
  • Welded rim joint
  • Non-eyelet PHR spoke interface
  • Tubeless ready (TC), hooked bead
  • Presta valve hole
  • Disc specific
  • ASTM category 4
  • Recommended max system weight 120 kg
  • E-bike approved (to 25 km/h class)
BrandDT Swiss
ModelXM 421
DisciplineAll mountain / trail
Diameter29" (622)
Internal width25 mm
Outer width30 mm
Rim depth20 mm
Hole count28
Brake typeDisc specific
TubelessTubeless ready (TC), hooked
ValvePresta
Rim jointWelded
ASTM category4
Max system weight120 kg
E-bikeApproved (25 km/h class)
Weight465 g (29")
SKU APO-DTR0009
Barcode # 7630033852081
Brand DT Swiss

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