{"product_id":"dt-swiss-rr-421-28-asymmetric-disc-rim","title":"DT SWISS RR 421 28\" ASYMMETRIC DISC RIM","description":"\u003cdiv class=\"mb-1\"\u003e\n\u003ch3\u003eThe DT Swiss RR 421 Asymmetric is a premium aluminium rim engineered for modern road cycling.\u003c\/h3\u003e\n\u003cp\u003eFeaturing a generous 20 mm internal width, it accommodates wider tyres while maintaining a featherlight 430-gram weight—ideal for endurance road disc brake builds. The asymmetrical profile counterbalances the offset created by disc brake hubs, optimising spoke angles for more uniform tension and enhanced wheel stiffness.\u003c\/p\u003e\n\u003cp\u003ePosition the offset towards the drive side on the front wheel and away on the rear for optimal performance.\u003c\/p\u003e\n\u003cp\u003eFully compatible with both standard clinchers and tubeless road tyres using DT Swiss tubeless tape and valves. Assembled with Squorx ProHead nipples and PHR washers for maximum durability without added weight.\u003c\/p\u003e\n\u003cp\u003eStrength Boost Welding Technology delivers a perfectly welded, reliable construction. The tough black coating provides both resilience and visual appeal. Specifications include Presta drilling, 24 mm outer width, 21 mm height, 601 mm ERD with PHR washers, and maximum spoke tension of 1200 N.\u003c\/p\u003e\n\u003cp\u003eRated for systems up to 120 kg. For heavier-duty applications, consider the RR 521. A versatile upgrade that transforms your road bike's performance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Road \/ Endurance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 28\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReference diameter ERD:\u003c\/strong\u003e 601mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRim diameter:\u003c\/strong\u003e 622mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInner width:\u003c\/strong\u003e 20mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter width:\u003c\/strong\u003e 24mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 21mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrake type:\u003c\/strong\u003e Disc brake\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore Type:\u003c\/strong\u003e Non-Eyelet (PHR washer)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve hole:\u003c\/strong\u003e Presta \/ SV Ø 6.5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax recommended system weight:\u003c\/strong\u003e 120kg (body weight + bike + equipment)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eASTM Classification:\u003c\/strong\u003e 2\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHoles\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e24\u003c\/li\u003e\n\u003cli\u003e28\u003c\/li\u003e\n\u003cli\u003e32\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMaterial\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAluminium\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eColour\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlack\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWeight\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e430g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eContents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x DT Swiss RR 421 Performance asymmetric Road Rim\u003c\/li\u003e\n\u003cli\u003eincl. PHR Washer and DT Pro Lock Squorx Pro Head Nipple\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mb-1\"\u003e\n\u003cp\u003eWeights are based off pre-production products at time of publication. Weights may vary in final production.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"DT SWISS","offers":[{"title":"24H","offer_id":57656224481655,"sku":"RRR421DBBK24","price":84.99,"currency_code":"GBP","in_stock":true},{"title":"28H","offer_id":57656224514423,"sku":"RRR421DBBK28","price":84.99,"currency_code":"GBP","in_stock":true},{"title":"32H","offer_id":57656224547191,"sku":"RRR421DBBK32","price":84.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0707\/2350\/2370\/files\/rr421adb_e782bbfb-35b9-47f7-89f7-2ea3f5340d7d.jpg?v=1793367795","url":"https:\/\/www.allterraincycles.co.uk\/products\/dt-swiss-rr-421-28-asymmetric-disc-rim","provider":"allterraincycles","version":"1.0","type":"link"}