The XR 421 is a lightweight cross-country aluminum rim engineered for riders seeking speed, efficiency, and confidence on technical XC terrain. Its asymmetric rim profile, durable aluminum construction, and wide 30 mm internal width provide excellent tire support, traction, and wheel strength while keeping weight low for fast acceleration and climbing.Lightweight aluminum construction optimized for cross-country racing and fast trail riding30 mm internal rim width supports tires up to 2.7" wide for improved grip and cornering stabilityAsymmetric rim design equalizes spoke tension for a stronger, more durable wheel buildTubeless-ready design allows lower tire pressures for enhanced traction and reduced rolling resistance28-hole drilling helps create a lightweight wheelset without compromising reliability29" rim size with a weight starting at 548 g for efficient rolling and climbing performanceItem SpecificationsBrake CompatibilityDisc OnlyBrake TrackNoneColorBlackDefined ColorBlackHub Drilling28ISO Diameter622 / Road / 29"Manufacturer Spec ERD (mm)604Rim MaterialAlloyRim Width (Internal)30Tire TypeTubeless ReadyValvePrestaWeight548Wheel Size29" DT Swiss XR 421 Rim Rims EAN: 7613052427744 MPN: RDXR42CDPW28SA0756