Reynolds Black Label 329 Pro 157mm Wheelset

The Reynolds Blacklabel 329 Pro 157mm Wheelset is a 29-inch trail wheelset built specifically for frames running Super Boost rear spacing — a configuration that's become standard on modern long-travel trail and enduro bikes designed around wide-stance rear suspension geometry. Reynolds has been building carbon mountain wheels since the category existed, and the Blacklabel Trail Pro is their current benchmark for a hookless, tubeless-ready 29er that balances weight, stiffness, and long-term durability without requiring tradeoffs between them. At 1,574 grams with Industry Nine Hydra hubs and Sapim CX-Ray spokes, this is a wheelset where every component is spec'd to the same standard.

MR5 Carbon Rim — Asymmetric, Hookless, 32mm Internal

The rim uses Reynolds' MR5 construction — their fifth-generation mountain carbon layup — developed to optimize the balance of strength, compliance, and weight for trail riding. At 32mm internal width and 19mm depth, the profile is designed for the tires a trail rider actually runs: 2.3" to 2.5" and wider, where a 32mm internal channel produces a rounded casing shape and full bead support rather than the pinched, distorted profile that older narrow rims impose. The hookless bead design pairs with tubeless tire setups to produce an airtight interface that resists burping in hard corners better than traditional hooked clincher profiles. Reynolds applies IDM (Integrated Dimple Matrix) to the rim's outer surface — a dimple texture that reduces aerodynamic drag — and TSS (Tube Surface Smoothing) to the inner channel for consistent tubeless tape adhesion and sealing. The rim is also asymmetric: the spoke bed is offset from centerline, which equalizes tension between the drive and non-drive sides. Uneven spoke tension is the primary driver of wheel flex and premature spoke fatigue; the asymmetric design directly addresses both.

Industry Nine Hydra Hubs — 0.52° Engagement

The Industry Nine Hydra hub is Reynolds' choice across the Blacklabel Trail Pro line, and the engagement spec tells you why: 0.52° of rotational movement before the pawls catch and power transfers — the equivalent of 690 points of engagement from a 6-pawl ratchet mechanism. On a trail wheelset, that translates to near-instant drivetrain response when you pedal out of a corner, up a technical roll, or through any sequence where clipping a feature versus clearing it comes down to milliseconds of drivetrain slack. The hubs are precision-machined aluminum with oversized flanges sized for optimal spoke bracing angles. Freehub bodies are available in Shimano Microspline and SRAM XD, covering current 12-speed mountain drivetrains from both major groupset manufacturers. The rear axle is built for 157mm Super Boost spacing — the wider standard that improves tire clearance and drive-side spoke bracing angle on frames designed for big-volume rear rubber.

Sapim CX-Ray Spokes and 3x Lacing

Reynolds builds the 329 Pro with 28 spokes per wheel, laced 3x front and rear. The spoke is Sapim CX-Ray — a bladed, butted stainless steel spoke used extensively in high-end mountain wheel builds for its combination of tensile strength and vertical compliance. CX-Ray's flattened cross-section resists twisting during tensioning and reduces aerodynamic drag along the spoke length. The 3x crossing pattern provides a more compliant, impact-absorbing spoke path than radial lacing, which matters on a trail wheel that will take repeated hits from roots, rocks, and drops. External alloy nipples are used throughout. Twenty-eight spokes per wheel is the appropriate count for a trail rider's output — sufficient redundancy and lateral stiffness for demanding terrain without the weight penalty of higher spoke counts.

What's Included and Who It's For

The Blacklabel 329 Pro arrives with tubeless rim tape pre-installed and tubeless valve stems included — ready to mount tires and set up tubeless without additional preparation. Reynolds backs the wheelset with a lifetime warranty to the original owner, a commitment that reflects building wheels in-house to proprietary engineering specifications rather than outsourcing production. The 157mm rear spacing makes this wheelset specific to Super Boost frames; the same Blacklabel 329 Pro is also available in 148mm Boost for standard frames. At $2,299.99, the 329 Pro is priced where the hub, spoke, and rim specification are all genuinely premium — a coherent build across every component rather than one strong element supported by two compromises.