Over 2,000,000 Million Customers Served!!!

Need Help? Click the Live Chat to Talk to a Gearhead 💪

Enjoy Free Shipping on Orders Over $75 – Available Within the Lower 48 States!

Load image into Gallery viewer, Industry-Nine-Hydra-2-Classic-Rear-Hub-28-hole-6-Bolt-Disc-SRAM-XD-RRHB2661-Bicycle-Rear-Hub
Load image into Gallery viewer, Industry Nine Hydra 2 Classic Rear Hub - 12 x 157mm, 6-Bolt, XD, Black, 28H

SKU: RRHB2661

Industry Nine Hydra 2 Classic Rear MTB Hub - 12x157mm Thru-Axle, XD Drive, 6-Bolt Disc, J-Bend Spokes, Black, Enduro & E-Bike-Ready with 6903 Bearings, Reinforced Axle & Bombproof Durability

Regular price $470.00
$522.95 Sale price $470.00 Regular price
Sale Sold out
Unit price
/per 
Save 10%
  • Free Shipping Over $75
  • 30 Day Returns
  • Satisfaction Guaranteed!

$10 Gift Card

at 250 points

$25 Gift Card

at 500 points

$75 Gift Card

at 1,000 points

This is a pre order item. We will ship it when it comes in stock.

$10 Gift Card

at 250 points

$25 Gift Card

at 500 points

$75 Gift Card

at 1,000 points

Description
Specifications

Enhance your mountain biking experience with the Industry Nine Hydra 2 Classic Rear Hub - the ultimate choice for trail, enduro, downhill, and e-bike riders seeking unmatched durability, precision engagement, and cutting-edge engineering. Crafted with advanced materials and innovative features, this premium hub ensures superior performance in demanding conditions.

Materials & Construction

Made from robust, lightweight aluminum with scalloped flanges, the Hydra 2 combines strength and weight-saving design. Its 65% thicker axle and larger 6903 sealed cartridge bearings deliver superior stability and long-lasting performance, even under full-power e-bike use. Full-contact radial lip seals and proximity dust shields effectively keep dirt and grime out, ensuring reliable operation mile after mile.

Performance & Engineering

Re-engineered based on insights from over 100,000 Hydra hubs, the Hydra 2 features a reinforced axle and enlarged pawl pockets for enhanced durability and force distribution. The 6-pawl Hydra 2 freehub body engages every 0.41 degrees with an unprecedented 870 points of engagement (P.O.E.), providing instantaneous, telepathic connection and control - perfect for aggressive trail riding and technical descents.

Components & Technology

Equipped with a SRAM XD driver body and sealed 6903 bearings, this hub guarantees smooth, efficient power transfer and minimal drag. The refined drive ring and increased tooth counts on each pawl improve engagement reliability, while the sophisticated labyrinth seal system prevents grit ingress, preserving internal lubrication and performance over time.

Style & Use Case

Designed in sleek black, the Industry Nine Hydra 2 offers versatility for mountain bikers needing a high-performance rear hub capable of handling rugged trails, steep descents, and powerful e-bikes. Its durable, lightweight design with 28 spoke holes and J-bend spoke interface makes it compatible with most trail and enduro wheelsets, elevating both the aesthetic and functional aspects of your bike.

Innovative & Differentiating Features

- 6-Pawl Hydra 2 Freehub with 870 P.O.E. engagement for rapid, precise control

- 65% thicker axle with advanced stress washer for maximum strength

- Enlarged pawl pockets for even force distribution and increased longevity

- Scalloped flange design for strength-to-weight optimization

- Full contact radial lip seals and proximity dust shields for superior sealing against dirt and debris

- Compatible with 12x157mm thru-axle systems and 6-bolt disc brakes for versatile setup options

Upgrade your mountain bike with the Industry Nine Hydra 2 Classic Rear Hub and experience unmatched durability, rapid engagement, and cutting-edge engineering tailored for serious riders. Perfect for trail, enduro, downhill, and e-bike applications-get ready to ride with confidence.

  • Heavy-duty 12x157mm boost rear axle compatible with SRAM XD freehubs, designed for optimal strength and durability in trail, enduro, and downhill riding conditions.
  • Constructed with high-grade materials, including a thicker 65% reinforced axle and sealed 6903 bearings, ensuring long-lasting performance and resistance to harsh terrain and full-power e-bike loads.
  • Innovative Hydra 2 freehub technology features a 6-pawl configuration with 870 P.O.E., delivering lightning-fast engagement every .41 degrees and improved responsiveness for aggressive riding styles.
  • Engineered with scalloped flange design for increased strength-to-weight ratio, reducing hub mass while enhancing stiffness and reliability on demanding climbs and descents.
  • Sealed full-contact radial lip seals and proximity dust shields protect internal components from dirt, grime, and moisture, maintaining smooth operation and longevity in all weather conditions.
Rear Axle12mm Thru x 157mm
Cassette Body TypeSRAM XD
ColorBlack
Skewer IncludedNo
Bearing TypeSealed Cartridge
Weight292
Designed for ebikeYes
Defined ColorBlack
Spoke InterfaceJ-Bend
Hub Drilling28
Hub/Brake Compatibility6-Bolt Disc
Shipping
Returns
About Us
Contact Us

We pride ourselves on our ability to ship and deliver your gear with excessive speed! We ship from 22 locations throughout the United States and most orders will arrive in 3 days or less with Free Shipping on orders over $75!

The nitty gritty, for specific delivery timelines please pay attention to the delivery timelines on the product pages and the time frame estimated in the carts. If you need a part by a specific day, please contact us by chat, phone, or

Chat

Talk with a representative

Start Chat

Email

info@365cycles.com

Send Email

Phone

603-968-5797

Call Now

Most orders placed during the workweek before 1:00 PM Eastern time ship the same day, but during peak/holiday season or depending on inventory location handling time can take up to 48 hours. If you have questions regarding shipping estimates, don't hesitate to get in touch with us before placing the order. There is a direct signature requirement for all orders over $500.

We provide the you the ability to utilize multiple shipping & billing addresses, based upon what fits your current needs. However you are responsible to maintain and update any new address changes, as 365 Cycles will not be held liable for orders being shipped to an incorrect address.

  • Our Mistake: If we messed it up you can rest assured we are going to make it right. Contact us by email, phone, or chat and we will make your head spin with how quick we fix it
  • Warranty: We are an authorized retailer for everything we sell, so rest assured your product is covered under the manufacturer's warranty. Contact Us if you are having an issue and we will make sure you are taken care of
  • Just don't want it anymore: We have a 30-day return policy for orders within the US. We offer refunds on returned items that are brand new and in their undamaged, original packaging. Customers are responsible for the cost of return shipping. Damaged, installed, and used items as well as those without original packaging are not eligible for returns. If it's returned in this condition it may be denied and sent back to you

If you need to return your order please email us at info@365cycles.com, call us at 603-968-5797, or use the live chat on our site.

Chat

Talk with a representative

Start Chat

Email

info@365cycles.com

Send Email

Phone

603-968-5797

Call Now

*Please allow up to 3 business days for us to process your return*

365 Cycles puts the customer above everything. Our number one goal is your satisfaction. When you press the shift lever you want the gears to shift, and when you buy bicycle parts, you want the bicycle parts to arrive on time in new condition. With over 60,000 products and 22 warehouse locations throughout the country, we have the parts you need and they are coming in hot!

Living an active lifestyle is just that, a lifestyle that never goes away and our goal is to always exceed your expectations so we can take this lifelong journey together. We strive to have the parts you need, at competitive prices with unmatched shipping speeds!

If there is ever an issue with an order we will work at warp speed to fix our mistake and make sure you never go a day without a bicycle! If you are not receiving the quality of service you need from one of our exceptionally qualified bicycle experts, tell them Ben Berman told you to tell them "Customer Loyalty" and then name your terms.

Our team is waiting to help you 7 days a week and they are more qualified to help than I am but if you ever feel like you're not getting the service you need I’m personally asking you to email me at ben@365cycles.com with "CUSTOMER LOYALTY" in the title and I will personally handle your order.

Over the years we have served millions of satisfied customers and continue to serve many of them today. With your feedback, we are confident we can take this lifelong journey together and build a friendship that goes beyond parts and accessories.

“If you want to go fast, go alone, if you want to go far, go together.” -Someone Smart

Ben Berman Founder & CEO of 365 Cycles


Company Core Values: 

These were established by the members of our team and we use them every week to call out team members who have shined in one of these areas. Feel free to let us know at info@365cycles.com if someone you worked with has gone above and beyond in one of these areas. 

Customer Loyalty

Put yourself in their shoes and support those who support us.

You Control the Outcome

If it is to be, it’s up to me" You are personally responsible for controlling the outcome.

Seek Understanding

Understanding the answer is more important than the answer.

Progress Not Perfection

Pick a direction, analyze the results, and be willing to change course.

Will to Win

Customers, 365 Team, Partners, all need the will to win. Bring the Will to Win to every conversion.

Keep Moving

Move the body, move the mind, and remove any hurdles to achieving an active lifestyle.

Do the Right Thing:

Doing the right thing is more important than doing the thing right.

Stronger together:

If you want to go fast, go alone, if you want to go far, go together. Get your team involved and become stronger together.

Chat

Talk with a representative

Start Chat

Email

info@365cycles.com

Send Email

Phone

603-968-5797

Call Now

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)