DT Swiss - XR 391 29" RimsDT SWISS XR 391 29" RIMS A modern Cross Country (XC) rim: The right width to run the wide tyres necessary to be competitive on today's demanding XC courses. The welded construction of the XR 391, along with the bead blasted, anodized finish are on par with a high end XC ride. The user specific profile, custom alloy and the use of the PHR nipple interface allow these rim to be simultaneously wide, strong and light. Material: Aluminium Weight: 440 grams

The same SRAM X-SYNC™ technology at a price well below competitors’ imitation “narrow wide” rings

Other advancements include a new inner plate finish plus chrome hardened pin construction

it helps keep things cool even when the riding gets rowdy

Backer Material Aluminum

Fits SRAM 2 Piece Caliper Road Brakes

Profile: HS425

Single speed steel spline sprockets 3/32" & 1/8" 12t to 20t

This lightweight

Rainbow Technology (Cassette) XG Cog Sizes 10

commuting or just cruising the neighborhood

The new Zipp Stem Top Cap and Bolt are designed to work specifically with Zipp stems

ERD (mm++): 551 (27