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Want to run wider tyres without adding weight? the RR 421 offers a full 20 mm of internal width making it the perfect match for the latest endurance road disc brake bikes but weighs in at only 430 grams.
Want to run wider tyres without adding weight? the RR 421 offers a full 20 mm of internal width making it the perfect match for the latest endurance road disc brake bikes but weighs in at only 430 grams.
Dt Swiss

DT Swiss RR 421 Asymmetric DB Disc Road Bike Rim in Black

£80.95 £89.99 10% off
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Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
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60 Day Easy Returns

We offer a 60 Days returns on the majority of items purchased on our website and in store. Simply return the item unused and undamaged with its original packaging and we will process a refund to you within 7 days to the original payment method.



After 60 days the suppliers original warranty will apply, and we will endeavour to repair, replace or refund the item depending on how the supplier sees fit to remedy any acknowledge issue with a product.

RETURNING ITEMS WITH BATTERIES - Please use Royal Mail and notify them of the contents when arranging shipping so a battery label can be attached - Please connect batteries before packing, for example batteries should be connected to heated gloves, as this is the only way you can ship items with Lithium Batteries. This is VERY IMPORTANT as items can be destroyed and this is your responsibility when using Royal Mail!

Items Excluded from 60 Days returns:

Base Layers – Layers next to skin cannot be refunded or exchanged if worn, for hygiene reasons

Gift Purchasing
We extend our 60 day returns window from November 1st, giving you or the receiver of a gift until 31st Jan to contact us to arrange a return or replacement. A proof of purchase will be required.

Our Returns Address

Returns
The Bicycle Barn
Hillhouse Farm Units
Worthing Road
West Grinstead
West Sussex
RH13 8LG

We always recommend using a tracked returns service if posting items back, as you are responsible for the safe delivery of any returns. If a warranty Item please contact us and we will organise a collection/return.

DT Swiss RR 421 Asymmetric DB Disc Road Bike Rim in Black

Brand:Dt Swiss

Code:VARRR421BLK

Want to run wider tyres without adding weight? the RR 421 offers a full 20 mm of internal width making it the perfect match for the latest endurance road disc brake bikes but weighs in at only 430 grams.

Asymmetrical rim profile is intended to counteract the off-set produced by using disc brake hubs, improving spoke angles and allowing for more even tension, strengthening and stiffening the wheel.

When lacing these rims, the offset should be towards the drive side on the front and away from the driveside on the rear, this allows for an optimal balance of spoke angles.

Can be run either with standard clinchers or road tubeless tyres using DT Swiss tubeless tape and valves.

Comes packaged with DT Swiss Squorx ProHead nipples and PHR washers to complete your build.

Strength Boost Welding Technology creates a perfectly welded join for a durable, reliable rim.

PHR washers and convex Squorx nipples naturally align perfectly with your chosen spokes, increasing stiffness and durability with no weight penalty over traditional eyeleted rims.

Features:

  • Unique process for the black coating produces a tough and durable finish
  • Suggested maximum system weight of 120 KG, those looking for 20 mm wide rim for heavier duty use are advised to consider the seriously robust RR 521
  • Presta drilling
  • Outer width: 24 mm, Inner Width: 20 mm, Height: 21 mm
  • ERD 601 mm with PHR Washers installed
  • Max spoke tension: 1200 N
  • Weight: 430 grams
Sizing Information
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