JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser.

Sorry your version of browser is not supported. Please try to upgrade it.

Update browser now.

Compare Products

Wide, Full Open

Our enduro-ready, long-travel 29er brings 170mm of wheel travel to slay any singletrack, yet ascend uphills with Niner’s signature CVA suspension efficiency.

Find Your WFO 9 RDO

See All Mountain Bikes

King of the mountain

For over a decade, the RIP 9 trail bike has ruled Niner’s off-road lineup. This latest evolution of our flagship 140mm 29er is ready to tame any trail.

Find Your RIP 9 RDO 29

See All Mountain Bikes

Fit to take flight

Merge XC efficiency with trail bike capability, thanks to lightweight RDO carbon and 120mm of supple CVA suspension travel.

Find Your JET 9 RDO

See All Mountain Bikes

Rocket Powered

With 100mm CVA suspension and contemporary, modern geometry, this is our featherweight, cross-country race-ready launch vehicle.

Find Your RKT 9 RDO

See All Mountain Bikes

Elevate your ride

Light and bright, our signature RDO carbon fiber hardtail rules the racecourse.

Find Your Air 9 RDO

See All Mountain Bikes

To AIR is human

Cross-country quickness with a tough guy trail bike attitude, available in this accessible aluminum hardtail.

Find Your Air 9

See All Mountain Bikes

Steel is real

Made from Reynolds 853 steel and a 120mm fork for all-day epics, multi-day missions, and backcountry exploration.

Find Your Sir 9

See All Mountain Bikes

Magic Carpet Ride

Go gravel riding farther and faster with high performance, full suspension.

Find Your MCR 9 RDO

See All Gravel Bikes

Road Less Traveled

Premium RDO carbon fiber and a full feature set forms the most compliant, lightweight, and versatile gravel bike ever made.

Find Your RLT 9 RDO

See All Gravel Bikes

Overland explorer

Comfort, durability, and confidence from Reynolds 853 steel, with a full suite of gravel-ready features.

Find Your RLT 9 STEEL

See All Gravel Bikes

Less is more

For overlanders, explorers, and dreamers, a fully featured aluminum gravel bike to get you there and back.

Find Your RLT 9

See All Gravel Bikes

RIP e9 - Ride more, go farther.

Power past whatever holds you back. With smooth Bosch power, long range, and 150mm travel, this 29er is your dirt-riding difference maker.

Find Your RIP e9

See All E-Bikes

WFO e9 - No shuttle? No problem.

Access the toughest terrain under your own power. Extended range, exceptional Bosch power, and 180mm of travel for the rowdiest lines.

Find Your WFO e9

See All E-Bikes

RLT e9 - Overland adventure vehicle.

A shapeshifting, multipurpose e-gravel bike for any adventure.

Find Your RLT e9 RDO

See All E-Bikes

Your build starts here

Start your dream build here.

See All Ebikes

See All Gear

Your build starts here

Start your dream build here.

See All Frames

See All Gear

Built for the ride

Dial in your bike from top to bottom with our signature components.

See All Components

See All Gear

Ready for action

Frame bags, fenders, and all the final touches to personalize your rig.

See All Accessories

See All Gear

Don’t sweat the small stuff

We have you covered with derailleur hangers, pivot parts, and frame fittings.

See All Frame Parts

See All Gear

Dress for success

Join the Niner community with tees, hats, and logoed ride wear.

See All Ride Apparel

See All Gear

Apparel

Niner threads for on the bike or out on the town.

SEE ALL APPAREL

See All Gear

Accessorize your adventure

Add Niner to your car, campsite, office, or anywhere else you can imagine.

SEE ALL MERCHANDISE

See All Gear

On sale, limited quantities

Add Niner to your car, campsite, office, or anywhere else you can imagine.

See All Outlet Items

See All Gear

Constantly Varying Arc

Learn all about our patented, proven suspension system.

See CVA Suspension

Race Day Optimized

Our carbon fiber formula results in lighter, stiffer, and stronger bikes that last a lifetime.

See RDO Carbon Fiber

Singlespeed, simplified

Niner’s own BB system makes it easy to go geared-up or gear-free.

Learn More

You can’t stop the metal

We keep it real with our steel, so you can slay the miles with smiles.

Learn About Reynolds 853

Enduro Pivot Bearings

On every Niner Bikes full-suspension frame, Enduro Bearings MAX black oxide bearings are inside every pivot point. Niner is one of the only brands using these high-grade pivot bearings.

Learn More

From idea to actual

All our designs originate in-house. We’re control freaks and we obsess over the details.

See All Development

Niner e9 Series: Powered by Bosch

The global leader in e-bike drive systems, batteries, and displays, Bosch is our chosen partner for RIP e9, WFO e9, and RLT e9 RDO.

Power Up with Bosch

News, views, and good times

Get the latest from Niner! Adventures, travel, new bikes - it’s all here.

See All News and Culture

Ninerds at your service

Small in number but strong in spirit, we’re a fun group of passionate outdoor people.

Meet the Gang

Riding and representing

Our sponsored athletes and ambassadors travel the world, representing Niner, interacting with riders, and winning the occasional bike race.

Meet Our Riders

Supporting the sport

We actively engage with our global and local riding communities in support of riders at all levels.

Join Our Community

Where the magic happens

Our global HQ in Colorado is situated by bike paths, breweries, and a great group of riders.

See How We're Doing in FOCO

Thinking ahead and giving back

From Day One, Niner has always been about creating more rad places to ride.

Speak Out for Trails

Where it all began

A long time ago, in a place far away, a love of riding dirt on big wheels grew into a global empire. Sort of.

Travel Back in Time

Find a Niner near you

Find a Niner to ride from our dealer network around the country.

See All Dealers

Test Ride a Niner

We always say, if you really want to understand Niner, you have to go and ride one. Our bikes make riding on dirt a better experience! We’d love to get your bum on one of our bikes, because we are certain you’ll have a great time and you won’t want to give it back.

Find a Niner Demo Near You!

Visit a Demo Center

As often as possible, we partner with key dealers in popular locations around the country to offer semi-permanent fleets of Niner test bikes. Let’s call them “Niners in residence,” or maybe “Niner pop-up dealer demos.”

FInd A Demo Center

Account

Settings

Language

BioCentric II

Name: BioCentric II
SKU: 49-131-12-00-20
Price: 89 USD

$89.00

In stock

SKU

49-131-12-00-20

EBB will only fit frames with BB shell dimensions of 55mm diameter and 68mm width. Order here for a spare.

Installation guidenbsp;here.

Skip to the end of the images gallery

Skip to the beginning of the images gallery