Reynolds Blacklabel 289R DH LTD 29" 157mm Wheelset

Downhill racing is the most destructive environment a wheel can face — repeated impacts at speed, sustained lateral loads through high-G corners, and full bike weight hammered through rough terrain at race pace. The Reynolds Blacklabel 289R DH LTD 29” 157mm Wheelset is designed to survive all of it and win doing so. Built around Reynolds’ MR5 carbon construction and IDM resin system, these 29-inch wheels bring World Cup-proven durability and a rim profile optimized for the demands of modern Super Boost-spaced downhill bikes.

Reynolds has been refining their downhill wheel program through the highest levels of competitive gravity racing. The Blacklabel DH line has been used across full EWS and UCI DH World Cup seasons by elite teams — not one-off race appearances, but complete seasons of racing on a single set of rims. That durability record comes directly from the IDM (Impact Dispersing Matrix) system, a combination of high-quality carbon fibers and a unique resin with exceptional impact-dispersing characteristics. The result is a wheel that handles rim strikes other carbon products wouldn’t survive, without the weight penalty that comes from simply building thicker walls.

The rim geometry is purpose-built for aggressive DH riding. At 28mm inner width and 34mm outer width, the profile is wide enough to support modern high-volume DH tires correctly — squaring them off the bead, improving casing support in corners, and reducing the risk of burping on hard landings. The hookless tubeless straight-side bead delivers a secure air seal without the vulnerabilities of a hooked bead design. The asymmetric rim profile corrects the spoke tension imbalance inherent in 157mm Super Boost rear axles, creating a more even and structurally sound wheel build. Both wheels are laced with 32 Sapim Sprint J-bend spokes to external brass nipples — a combination Reynolds chose for its ability to handle vertical impacts without catastrophic failure.

The hub is the Reynolds/Ringlé Super Bubba, a fully CNC-machined unit available with either 4-degree quick engagement or 8-degree bomb-proof engagement. Front spacing is 20x110mm Boost; rear is 12x157mm Super Boost Plus, matching the axle standard of essentially every current high-end DH frame. Freehub is available for Shimano HG and SRAM XD drivetrains. Reynolds backs every rim in the Blacklabel line with a lifetime warranty.

Design Benefits

1. IDM construction for real-world impact resistance — The Impact Dispersing Matrix combines high-quality carbon fiber with a unique resin system engineered to absorb and redirect rim strike energy rather than concentrating it. Proven over full-length World Cup DH and EWS seasons on a single set of rims.
2. MR5 five-zone rim architecture — Reynolds’ Mountain Rim 5 process engineers each zone of the rim cross-section individually — balancing strength, weight, and compliance across the bead walls, channel floor, and sidewalls rather than treating the rim as a uniform structure.
3. Asymmetric profile for Super Boost spacing — The asymmetric rim design shifts the spoke bed off-center, compensating for the extreme driveside/non-driveside tension imbalance created by 157mm rear spacing. The result is a stronger, more evenly tensioned wheel build.
4. Wide hookless bead for DH tires — The 28mm inner width and tubeless straight-side profile support modern DH casings correctly at the bead, improving lateral stability in corners and creating a more reliable air seal than hooked bead designs under hard use.
5. Ringlé Super Bubba hub flexibility — Selectable engagement (4° or 8°) lets riders tune the hub to their preference and terrain. CNC-machined construction provides the dimensional accuracy needed for consistent ratchet ring engagement under load.
6. Sapim Sprint spokes for compliance — J-bend Sapim Sprint spokes are selected for their balance of lateral stiffness and vertical compliance — a meaningful distinction on DH terrain where excessive lateral rigidity translates to rim strikes rather than absorption.

Final Take

The Reynolds Blacklabel 289R DH LTD Wheelset is for riders who race, or who want a wheel that can handle race-level abuse across full seasons of riding. The combination of IDM carbon construction, an asymmetric hookless rim, Ringlé Super Bubba hubs, and a lifetime rim warranty puts this in a different category than most DH wheelset options at this price. If you’re running a 157mm Super Boost Plus DH bike and want 29-inch wheels that won’t quit, this is a proven starting point.