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Niner Ros 9 Frame 2015
Niner Ros 9 Frame 2015
Niner Ros 9 Frame 2015
Niner Ros 9 Frame 2015
Niner Ros 9 Frame 2015
Niner Ros 9 Frame 2015
Niner Ros 9 Frame 2015
Niner Ros 9 Frame 2015
Niner Ros 9 Frame 2015
Niner Ros 9 Frame 2015
Niner Ros 9 Frame 2015
Niner Ros 9 Frame 2015
Niner Ros 9 Frame 2015
Niner Ros 9 Frame 2015

Niner Ros 9 Frame 2015

Item #: FR234I00
USD$499.00 SAVE 44% USD$899.00 msrp
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Niner Ros 9 Frame 2015

Niner ROS 9 Frame

The Niner ROS 9 is a versatile 4130 Cro-Mo steel frame with aggressive geometry which brings modern technology (oversized headtube, internally routed dropper post routing, and 12x142mm rear dropouts) to a frame that will last a lifetime.

The ROS 9 borrowed the SIR 9’s rear dropout design to allow 12x142mm rear hub configurations while still supporting the replaceable alloy derailleur hanger and allowing more surface area for a full weld around the entire end of the chain and seat stays ultimately creating a stiffer rear end. With a BioCentric II bottom bracket, the frame is single-speed capable. If running this as a multi-speed, the BB height can be adjusted when using a BioCentric II bottom bracket to fit this bike to your specific needs.

The ROS 9 features super-short chainstays and a slack headtube angle to better the handling at high speeds. The front and rear derailleur mounts are removable/replaceable. The R.O.S. 9 accepts internal and externally routed dropper posts with an alloy cover to block the port and keep out any debris if you choose not to use it. The ROS 9 also features tabs under the bottom bracket shell to mount a proprietary MRP XCG bash guard (sold separately).

Niner ROS 9 Frame Specifications

  • 73mm BB Width (with BioCentric II installed)
  • BioCentric II is compatible with external bearing cranks only
  • Direct mount front derailleur, high mount, top pull, removable front derailleur mount
  • Tabs under BB shell for custom MRP XCG Bash Guard - sold separately
  • 31.6mm seat post size, compatible with internal and external dropper post routing
  • 34.9mm seat collar size
  • 44mm headtube. Tapered headset with internal (ZS) top cup and 1.5" external bottom cup (included with frame). Cane Creek standard description: ZS44/28.6|EC44/40
  • All sizes have one bottle mount in the front triangle
  • Replaceable derailleur hanger or SS insert
  • 142 x 12mm Maxle rear spacing
  • Can fit up to a 2.34" tire (tire size varies by brand, some tires may not fit)
  • Compatible with most standard 1x, 2x and 3x chainring systems. Max 1x chainring size is 32T with BioCentric II in rear position - Max 38T with BioCentric II in forward position

GEOMETRY 120mm FORK (mm)
Size Small Medium Large Extra Large
A: Seat Tube Length 394 431 471 534
B: Effective Top Tube 578 595 614 633
C: Stack 634 634 657 675
D: Reach 396 411 426 439
E: BB Height - - - -
F: BB Drop 56 56 56 56
G: Head Tube Length 100 110 125 145
H: Head Tube Angle 68° 68° 68° 68°
I: Seat Tube Angle 74° 74° 74° 74°
J: Standover Height 709 730 783 833
K: Chainstay Length 418-423 418-423 418-423 418-423
L: Wheelbase 1098 1116 1136 1158


GEOMETRY 140mm FORK (mm)
Size Small Medium Large Extra Large
A: Seat Tube Length 394 431 471 534
B: Effective Top Tube 581 598 617 636
C: Stack 632 641 655 674
D: Reach 386 400 415 428
E: BB Height - - - -
F: BB Drop 49 49 49 49
G: Head Tube Length 100 110 125 145
H: Head Tube Angle 67° 67° 67° 67°
I: Seat Tube Angle 73° 73° 73° 73°
J: Standover Height 712 733 787 839
K: Chainstay Length 418-423 418-423 418-423 418-423
L: Wheelbase 1105 1123 1144 1165

REVIEW SNAPSHOT®

by PowerReviews
Niner Ros 9 Frame 2015
 
4.0

(based on 1 review)

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Reviewed by 1 customer

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4.0

Great riding frame with alot of neat little details.

By Andrew

from Duluth, MN

Verified Reviewer

Comments about Niner Ros 9 Frame 2015:

I've been riding my ROS for the whole summer of 2016 and I've got to say it took my riding skills to the next level. My previous bike was an aluminum Tallboy V1.0 and it was getting worn out with flex in the rear triangle due to worn bearings. The ROS feels slack and low where the Tallboy feels steep and tall. I built my ROS with a Pike, my Tallboy had a Revelation. The ROS as a whole feels like one flex-free piece from front axle to rear axle. The cornering and handling precision the ROS/Pike combo delivers is really superior to my worn Tallboy/Revelation. 2016 was my best riding/most fun I've had in 20 years of mountain biking. I had some laugh out loud moments when my fitness, the weather, trail conditions, and bike tune all came together and I had the best ride of my life back in September. I have no regrets going from a full-suspension bike to a hardtail. This frame has a great ride, with tons of tire clearance. If you've looked at a lot of frames, you'll notice all the little details that make this frame stand apart.
One word of caution. The derailleur hanger/axle nut just sits loose on the frame and is easy to cross thread and can ruin both your axle and hanger if done up wrong. My ham-fisted mechanic did this to me when my bike was first built up. I rode it for months until I got a flat and couldn't take the wheel off until that same mechanic helped me with two sets of pliers to get the axle out. I didn't think I could really blame him because I rode the frame for months and who really know what happened to the axle over that time. But I'm pretty sure he cross threaded it. I took that opportunity to upgrade the dropout and axle to a Shimano direct mount version and everything is great once again.

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Free Shipping Offer

Get free Standard Shipping with your $50 purchase today! Just choose Standard Shipping during checkout.

Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items.