https://checkout.netsuite.com/s.nl?c=655844&sc=4&logoff=T&ckabandon=&gc=clear
  • Current
  • Rowdy steel radness from the 29er-only mountain bike company
  • Zero mm of suspension is efficient in every chaingring
  • 44mm OS headtube is compatible with 120-140mm forks
  • Aggressive geo is slack and low with extra-short chainstays
  • BioCentric II enables perfect singlespeed setup and allows geometry fine-tuning
  • Forged frame details and internal dropper post routing
  • 142mm x 12mm rear spacing
  • Available in:
    Forge Grey
    Purple
  • MSRP $899 USD (frame, derailleur hanger, single speed insert, cable retention hardware, BioCentric II, headset, YAWYD, seat collar and maxle)
  • Rowdy steel radness from the 29er-only mountain bike company
  • Zero mm of suspension is efficient in every chaingring
  • 44mm OS headtube is compatible with 120-140mm forks
  • Aggressive geo is slack and low with extra-short chainstays
  • BioCentric II enables perfect singlespeed setup and allows geometry fine-tuning
  • Forged frame details and internal dropper post routing
  • 142mm x 12mm rear spacing
  • Available in:
    Forge Grey
    Purple
  • MSRP $899 USD (frame, derailleur hanger, single speed insert, cable retention hardware, BioCentric II, headset, YAWYD, seat collar and maxle)
  • Rowdy steel radness from the 29er-only mountain bike company
  • Zero mm of suspension is efficient in every chaingring
  • 44mm OS headtube is compatible with 120-140mm forks
  • Aggressive geo is slack and low with extra-short chainstays
  • BioCentric II enables perfect singlespeed setup and allows geometry fine-tuning
  • Forged frame details and internal dropper post routing
  • 142mm x 12mm rear spacing
  • Available in:
    Forge Grey
    Rally Blue
  • MSRP $899 USD (frame, maxle, BioCentric II, headset, geared/SS dropouts, and all cable retention hardware)
  • Escandaloso e impresionante Acero de la compañía exclusiva de 29ers
  • Cero mm de suspensión es eficiente en cada plato
  • 44mm de headtube que es compatible con horquillas de suspensión de 120-140mm
  • Geometría agresiva, holgada y baja con chainstays extra cortos
  • BioCentric II que permite una configuración singlespeed perfecta y permite ajustes finos de geometría
  • Detalles forjados en el cuadro y dropper interno post enrutado
  • Espacio trasero de 142mm x 12mm
  • Disponible en colores:
    Forge Grey
    Rally Blue
  • MSRP $899 USD (cuadro, maxle, BioCentric II, headset, dropouts SS y todas las piezas de retención de cable)

WHAT MAKES THE ROS 9 TICK?
Keep It Steel, Stud. The 4130 Cro-Mo tube set of the ROS 9 is the trusted standard for durability and ride quality. Following the lines and design language of the SIR 9, these tubes have been beefed up to handle the abuse the ROS 9 is designed to shrug off. The super-short chainstays provide a lofty front end feel while the slack HT angle keeps the front end composed at Mach Loony speeds. A neutral BB height can be made low or high to slay YOUR trails by positioning the BioCentric 2 where it will do the most good.

CONSTRUCTION DETAILS ABOUND
We borrowed the unique dropout design we developed for the SIR 9 to allow 142x12 Maxle use and house the stout alloy derailleur hanger. The dropout designs allow the chain stays and seat stays to be welded at any angle and provide far more surface area for a full weld around the tube’s end. The front derailleur hanger is removable with an alloy cover. Internal dropper post routing is optional, another alloy cover closes the port if you choose not to use it. Externally routed dropper posts utilize mounts under the top tube. Tabs under the bottom bracket shell accept a proprietary MRP XCG bash guard for optional extra protection. Full-housing cable routing for front and rear derailleurs using Niner’s bolt-on double housing clamps along top and down tubes complete the versatility. If you don’t need the guides, take them off and enjoy the clean look of theframe in singlespeed mode.

OVERSIZED HEADTUBE
The oversized headtube of the ROS 9 allows the use of tapered fork steerer tubes that measurably reduce fork deflection, which means your Niner tracks straight and true. The full spectrum of riders from xc racers to all mountain shredders benefit from these features which is why we incorporate the technology in all our new frames. The ROS 9 Lets you take full advantage of increased steering precision as you get yourself into trouble. The hardtail for riders that don’t like hardtails. No twitchy high-posting around features you would hit on your “real” bike. No need to back off because your XC racing head angle prevents solid roosting. The ROS 9 won’t judge your lines - it lets you write checks your skills might not be able to cash, and what is more exhilarating than that? Short chainstays, slack head angle, and oversized headtube nourish these Roots of Steel - all with the ability to tweak the geometry via the BioCentric II. Run this rig singlespeed, 1x or fully geared with a front derailleur if you roll that way. Remove the cable guides and front derailleur mount if you don’t. Stealth routing for the dropper post keeps the ROS 9 fresh and clean. Sorry, the ROS 9 is not compatible with heartrate monitors or training plans but it will certainly earn you some PRs when you do your part keeping the rubber side down. Ride Over S*!t – The new ROS 9 injects hardtails with a huge-ass dose of fun.

BIO-CENTRIC II BOTTOM BRACKET SYSTEM
The Niner BioCentric II makes adjustments easy across a wide range of gears and eliminates the need for adjustable dropouts, giving the cleanest possible solution for singlespeed use. No bolt on hubs, no chain tensioners cluttering your ride, no brake adjustments with gear changes. Additionally, BB positioning allows finetuning of geometry. Want shorter chainstays? A lower BB? Steeper or slacker seat angle? It’s all achievable with the BioCentric II.

Greater Range - The BioCentric II offsets the bottom bracket spindle 8.5mm from center, offering greater range of adjustment compared to a traditional EBB setup. More offset is a boon when changing gears without having to change chain length and it allows riders to make more noticeable changes to frame geometry. Reliable Function - Traditional EBB units are held in place with set screws that can become difficult to finely adjust over time, or expansion wedges that can deform the bottom bracket shell of the frame. Split bottom bracket shells that clamp an EBB can stretch or ovalize. The Bio-Centric II avoids these troubles by using two bolts to apply a clamping force on the outside edges of the BB shell, eliminating the possibility of ovalizing or indexing the shell itself.

WHAT MAKES THE ROS 9 TICK?
Keep It Steel, Stud. The 4130 Cro-Mo tube set of the ROS 9 is the trusted standard for durability and ride quality. Following the lines and design language of the SIR 9, these tubes have been beefed up to handle the abuse the ROS 9 is designed to shrug off. The super-short chainstays provide a lofty front end feel while the slack HT angle keeps the front end composed at Mach Loony speeds. A neutral BB height can be made low or high to slay YOUR trails by positioning the BioCentric 2 where it will do the most good.

CONSTRUCTION DETAILS ABOUND
We borrowed the unique dropout design we developed for the SIR 9 to allow 142x12 Maxle use and house the stout alloy derailleur hanger. The dropout designs allow the chain stays and seat stays to be welded at any angle and provide far more surface area for a full weld around the tube’s end. The front derailleur hanger is removable with an alloy cover. Internal dropper post routing is optional, another alloy cover closes the port if you choose not to use it. Externally routed dropper posts utilize mounts under the top tube. Tabs under the bottom bracket shell accept a proprietary MRP XCG bash guard for optional extra protection. Full-housing cable routing for front and rear derailleurs using Niner’s bolt-on double housing clamps along top and down tubes complete the versatility. If you don’t need the guides, take them off and enjoy the clean look of theframe in singlespeed mode.

OVERSIZED HEADTUBE
The oversized headtube of the ROS 9 allows the use of tapered fork steerer tubes that measurably reduce fork deflection, which means your Niner tracks straight and true. The full spectrum of riders from xc racers to all mountain shredders benefit from these features which is why we incorporate the technology in all our new frames. The ROS 9 Lets you take full advantage of increased steering precision as you get yourself into trouble. The hardtail for riders that don’t like hardtails. No twitchy high-posting around features you would hit on your “real” bike. No need to back off because your XC racing head angle prevents solid roosting. The ROS 9 won’t judge your lines - it lets you write checks your skills might not be able to cash, and what is more exhilarating than that? Short chainstays, slack head angle, and oversized headtube nourish these Roots of Steel - all with the ability to tweak the geometry via the BioCentric II. Run this rig singlespeed, 1x or fully geared with a front derailleur if you roll that way. Remove the cable guides and front derailleur mount if you don’t. Stealth routing for the dropper post keeps the ROS 9 fresh and clean. Sorry, the ROS 9 is not compatible with heartrate monitors or training plans but it will certainly earn you some PRs when you do your part keeping the rubber side down. Ride Over S*!t – The new ROS 9 injects hardtails with a huge-ass dose of fun.

BIO-CENTRIC II BOTTOM BRACKET SYSTEM
The Niner BioCentric II makes adjustments easy across a wide range of gears and eliminates the need for adjustable dropouts, giving the cleanest possible solution for singlespeed use. No bolt on hubs, no chain tensioners cluttering your ride, no brake adjustments with gear changes. Additionally, BB positioning allows finetuning of geometry. Want shorter chainstays? A lower BB? Steeper or slacker seat angle? It’s all achievable with the BioCentric II.

Greater Range - The BioCentric II offsets the bottom bracket spindle 8.5mm from center, offering greater range of adjustment compared to a traditional EBB setup. More offset is a boon when changing gears without having to change chain length and it allows riders to make more noticeable changes to frame geometry. Reliable Function - Traditional EBB units are held in place with set screws that can become difficult to finely adjust over time, or expansion wedges that can deform the bottom bracket shell of the frame. Split bottom bracket shells that clamp an EBB can stretch or ovalize. The Bio-Centric II avoids these troubles by using two bolts to apply a clamping force on the outside edges of the BB shell, eliminating the possibility of ovalizing or indexing the shell itself.

ROS 9 - RIDE OVER STUFF

Das ROS 9 ist für alle Biker entwickelt worden, die mit ihrem Hardtail alles machen möchten, was mit normalen Cross-Country Modellen nicht oder nur schwer möglich wäre. Unser neues Stahl-Bike gilt als universelles „Enduro-Hardtail“ mit einem sehr großem Einsatzpotenzial. Dafür hat unsere Designabteilung sehr viele einzigartige Features für das ROS 9 entwickelt: Der spezielle von NINER Bikes designte 4140 Cro-Mo Stahlrahmen wurde für alle Einsatzbereiche sehr widerstandsfähig konzipiert. Die Front-Sektion mit dem konischen Steuerrohr wurde zur Verwendung mit Gabeln mit bis zu 140 mm Federweg ausgelegt und bietet durch die hohe Steifigkeit sehr präzise Fahreigenschaften. Das Hinterbauachssystem wurde vom NINER SIR 9 Rahmen übernommen und ermöglicht mit seinen Spezialausfallenden die Montage von Laufrädern mit 12 x 142 mm Achsen der aktuellen Standards. Das Schaltauge ist selbstverständlich austauschbar und kann beim möglichen Single-Speed-Einsatz schnell abgenommen werden. Das NINER CYA Innenlagergehäuse liefert dafür mit den NINER EBB Innenlageradaptern optimale Einstellmöglichkeiten der Positionierung der Kurbelgarnitur oder der Kettenspannung.

Das ROS 9 kann darüber hinaus mit absenkbaren Sattelstütze, die wahlweise über eine interne oder externe Kabelführung verfügen, ausgestattet werden. Befestigungssockel unter dem Innenlagergehäuse ermöglichen die Montage von NINER MRP XCG „Bash Guards“, welche die Beschädigung des Unterrohres oder der Antriebseinheiten durch Hindernisse wirkungsvoll verhindern.

Das ROS 9 ist vielseitig einsetzbar. Es kann spontan als Single-Speed-Racer verwendet werden, um im nächsten Moment bei der Tansalp Challenge an den Start zu gehen. Wer nicht sicher ist, welches Setup das richtige für den Einsatz ist, kann mit dem ROS 9 alle Bike-Varianten ausprobieren.


ROS 9 Bike Check


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A real owner's manual - all the specifications, info and installation details you need.



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Current Catalog



Get Link


ROS 9 Bike Check


Get Link

A real owner's manual - all the specifications, info and installation details you need.



Get Link

Current Catalog



Get Link

ROS 9 Bike Check


Get Link

A real owner's manual - all the specifications, info and installation details you need.



Get Link

Current Catalog



Get Link

ROS 9 Bike Check


Get Link

A real owner's manual - all the specifications, info and installation details you need.



Get Link

Current Catalog



Get Link

$899.00

  
  

Enter Quantity

As a company dedicated to 29ers since our beginning, we at Niner are proud of our
geometry expertise. As you will see in independent review after review, our bikes
are held to the highest ride-quality standards, across our entire line up.

As a company dedicated to 29ers since our beginning, we at Niner are proud of our
geometry expertise. As you will see in independent review after review, our bikes
are held to the highest ride-quality standards, across our entire line up.

As a company dedicated to 29ers since our beginning, we at Niner are proud of our
geometry expertise. As you will see in independent review after review, our bikes
are held to the highest ride-quality standards, across our entire line up.

Gracias a haber apostado por las 29ers desde nuestros inicios, en Niner estamos orgullosos de nuestra experiencia en la geometría de los cuadros. Como podrás comprobar, nuestra completa gama de bicicletas cumple las expectativas de los riders más exigentes.

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How is our geometry like cake? Our award-winning geometry is part of what sets Niner apart.



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  • Complete bikes in an easy star-rating system
  • Carefully curated components to meet a wide range of budgets and riding styles


ROS 9 3-STAR X1
$3999.00
Available in: Purple/Niner Green or Forge Grey

View 3-Star X1 Spec



ROS 9 2-STAR SINGLE SPEED
$2899.00
Available in: Purple/Niner Green or Forge Grey
View 2-Star SINGLE SPEED Spec



ROS 9 Frame Only
$899.00

Forge Grey

Purple