Description

DT SWISS RR 421 Disc Rim: Lightweight Performance for the Modern Road Cyclist
Elevate your road cycling experience with the DT SWISS RR 421 Disc rim, a masterpiece of engineering designed for riders who demand performance, reliability, and versatility. As a premium choice in the world of road and cyclocross wheel building, the RR 421 stands out as the ultimate all-rounder. It provides an exceptional platform for a custom wheelset optimized for the power and precision of modern disc brake systems. Whether you are climbing steep mountain passes, navigating technical cyclocross courses, or enjoying long days on varied pavement, this rim delivers a responsive and confident ride.
At the heart of the RR 421´s design is an exceptional balance of low weight and high strength. Weighing in at a mere 430 grams, it significantly reduces rotational mass, leading to faster acceleration, more nimble handling, and less effort required on demanding climbs. This lightweight characteristic does not come at the expense of durability. The rim features a meticulously welded joint, a superior construction method that creates a stronger, stiffer, and more reliable connection than pinned or sleeved alternatives. This ensures a perfectly round and balanced rim for a smoother ride, easier wheel building, and a flawless seal for tubeless applications.
Embracing the evolution of road cycling, the generous 20mm internal width is perfectly suited for today´s wider road and gravel tires. This modern profile provides better support for the tire, creating an optimal shape that enhances traction, increases comfort by allowing for lower tire pressures, and reduces rolling resistance. The tubeless-crotched/clincher (TC) tire interface makes setting up for a tubeless ride straightforward, giving you the benefits of increased puncture resistance and a more supple ride quality. Designed specifically for disc brake use, its profile is optimized for the unique stresses and forces generated by disc braking, ensuring consistent performance and long-term reliability for your high-performance road machine.
This model is the specific Aluminum rim for bicycles RR 421 700C 21 mm DB VI 24 holes, with standard component decal Decal DIS no 10012271, Placement DIS no 10011535.
Attributes: Rims, Road Cycling
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Specifications:
Optional Accessories
– Optional Accessory Tape: Tubeless tape 23 mm
– Optional Accessory Valve: Tubeless valve road 32 mm
General
– Field Of Application: RR
– Product Type: 421
– Rim Joint: Welded
– Decal Type: Vinyl
– Net Weight : 430.000
– Recommended System Weight Max.: 120 kg
– ASTM Classification: 2
– Material: Aluminium
– Brake Interface: Disc
Dimensions
– Rim Diameter: 622 mm (29´´ / 700C)
– Reference Diameter ERD: 601 mm
– Inner Width: 20 mm
– Outer Width: 24 mm
– Rim Height: 21 mm
– Tire Interface: Tubeless crotched/clincher TC
– Spoke Bore Rim: Non eyelet PHR
– Valve Hole: Presta
Holes
– Number Of Holes: 24 Black