Mountain Rear Hub - J-Bend 6-Bolt Boost
HRJ28-248-XD60-BLK
Machined in Minnesota
Every hub is precision-machined and proudly assembled right here in our Minnesota shop. Please allow 1-2 business days for your order to be processed and shipped.
Mountain Rear Hub - J-Bend 6-Bolt Boost
Find your freehub body
Wolf Tooth J-Bend Mountain Hubs
When the time came to design our first mountain bike hub, we followed three guiding principles: pure performance, refined aesthetics, and extreme durability. To accomplish this, Wolf Tooth hubs use Enve INNERDRIVE internals and focus on what matters most to riders:
- Low drag for maximum rolling efficiency
- Extreme durability
- Ease of service
- A beautifully machined hub shell
Wolf Tooth MTB Hubs are precision engineered to be at the heart of your next high performance mountain bike wheel build.
Engineered and Machined In-House
Our MTB hubs are engineered and machined in-house from aerospace-grade 7075-T6 aluminum. Quintessentially Wolf Tooth by design, they feature a bombproof hub shell and beautiful Color Shop anodized finishes to match your other Wolf Tooth components and accessories.
Perfect Preload For Prolonged Bearing Life
The Perfect Preload system eliminates the need for bearing preload adjustments using a tuned wave washer. Bearing preload is optimized and set during hub assembly (and during repeat tear down and re-assembly during service) and dynamically adjusts over the life of the hub. Simply torque the hub to spec. No special tools required.
- Tuned wave washer between bearings for consistent and even force to eliminate play
- Concentric and coplanar driveside bearings and ratchets allow for extra wide bearing spacing
- Improved bearing efficiency
- Prolonged bearing life
- No adjustment required
Proven Performance
During development, we explored numerous options for the drive system in our new lineup of hubs. Proven by some of the hardest hitting cyclists in the world, we chose to build our hubs around the Enve INNERDRIVE system for its perfect balance of high rolling efficiency, prolonged bearing life, and immediate, zero flex engagement for powerful performance when things get steep and deep.
Oversized 42mm Steel Ratchets
The oversized INNERDRIVE ratchet rings found inside Wolf Tooth Mountain Hubs provide numerous benefits over traditional ratchet style hubs. First, the larger diameter drive rings allow for higher engagement tooth counts without sacrificing durability. Next, riders have the option of choosing between a 60, 80 (stock offering), and 100t drive ratchet to tune the hub engagement rate to their preferences. With the highest tooth count, INNERDRIVE hubs will engage in as little as 3.6 degrees. Finally, this is paired with the Perfect Preload system which delivers tool-free, adjustment-free preload on the hub internals for prolonged bearing life, minimal maintenance, and reduced drag.
- Immediate, zero flex engagement
- 100% engagement of teeth
- Isolated torque transmission for reduced axle load and stress
- 42mm ratchet
- Large diameter = lower stress on ratchet teeth
- Prolonged bearing life
- Extreme durability
- Fewer parts = less/lower maintenance
Customized Engagement
Three interchangeable ratchets (60, 80, 100T) allow riders to tune their engagement to their personal performance needs. Whether it be maximizing efficiency, response, or reliability, we have a solution.
Simple, Easy Service
No special tools required. Our refined MTB hub geometry incorporates many features that make living with and servicing our hubs easy.
- Consistent spoke lengths per wheelset
- Standardized bearing sizes across front and rear hubs
- Easily swap ratchets for customized engagement
- Your freehub and ratchets won't fall out during trailside or shop maintenance
- No manually set preload, simply torque to spec and it is perfect every time
Wolf Tooth Mountain Hubs are available in six Color Shop anodized finishes: Black, Red, Blue, Gold, Orange, and Ultraviolet Purple.
Machined and Assembled in USA
Wolf Tooth Mountain Hubs are CNC machined right here in our Minnesota machine shop.
Exceeds all EN/ISO safety standards
Safety is paramount. Wolf Tooth Mountain Hubs have undergone strenuous static and fatigue stress tests that exceed EN/ISO safety standards.
5-year Warranty
Wolf Tooth Mountain Hubs are warrantied for defects in material or workmanship for a period of five years from the date of purchase.
We believe in your right to be able to fix your components. Crashes happen, parts get misplaced, things go bump in the night. Replacement parts are available.
100% USER SERVICEABLE
Service for Wolf Tooth Hubs is simple and can be done at home with no special tools required.
REPLACEMENT PARTS AVAILABLE
Each component of your Wolf Tooth Hub can be purchased separately, from the shell, to the axle, and bearings.
SERVICE TUTORIALS
An owner’s manual and video guide are available so you can disassemble, service, and reassemble your Wolf Tooth Hubs.
Wolf Tooth J-Bend Mountain Bike Hubs are engineered and machined in-house from aerospace-grade 7075-T6 aluminum and run on the ENVE INNERDRIVE system. Each hub model features optimized weight, high rolling efficiency, prolonged bearing life, and immediate, zero flex engagement tailored to suit their intended riding applications.
This result is a balanced hub optimized for pure performance and extreme durability, with a lightweight, beautifully machined hub shell that is easy to service and configure to suit a wide range of rider preferences. The INNERDRIVE internals feature oversized 42mm diameter steel ratchets and Perfect Preload for low rolling resistance and prolonged bearing life. Riders have the option of choosing between a 60T, 80T, or 100T drive ratchets to tune hub engagement to prioritize lower drag or quicker engagement.
Our hubs are precision engineered and machined at Wolf Tooth HQ to be at the heart of road, gravel, and MTB riders' next high performance wheel build. Wolf Tooth Hubs are backed by Right To Repair, with service kits and parts available, and come with a 5-Year warranty.
Wheel Building Information
Hub Spec and Wheel Building Sheet
Compatibility
- Rear hub for 12x148 Boost spacing
- For use with 6-bolt rotors only
- For use with j-bend spokes only
Tech Specs
Weight: 246 g (XD) | 254 g (Micro Spline) | 258 g (HG)
Material: 7075-T6 aluminum hub shells and axles
Machined in the USA
Patent Pending
