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Niner ROS 9 Frame

ITEM NUMBER: 175 NINR94
PRICE POINT:
$899.00

NINER TECHNOLOGY

For every model, whether it's their lightest cross country hardtail or the burliest full suspension bike, Niner considers how each angle or length will interact with big wheels to affect the finished build.

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The basic concept of the larger diameter is simple: it will keep your wheels on top of oncoming obstacles. Rather than riding IN the terrain, you'll be riding ABOVE it, gaining more control and stability on even the roughest trails.

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PRODUCT DESCRIPTION

Niner ROS 9 Frame

What makes the ROS 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 heat tube angle keeps the front end composed at Mach Loony speeds. A neutral bottom bracket 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 – They borrowed the unique dropout design 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, an 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 the frame in singlespeed mode.

  • 44MM OS Headtube (ZS44 top, EC44 bottom)
  • Slack and Low Geometry w/ Extra-Short Chainstays
  • 73mm w' Biocentric II (only compatible with external cup BB)
  • Internal or externall Dropper Post Routing
  • 142mm X 12mm Maxle Rear Spacing
  • Direct mount front der (high) with removable mount
  • 31.6mm seatpost
  • 34.9mm seat collar
  • Replaceable derailleur hanger or SS insert
  • 1x max chainring 32t with Biocentric II in rear postion (38t max in front position)

GEOMETRY

Geometry

Size

Small

Medium

Large

X-Large

A

Top Tube Length (mm)

581

598

617

636

B

Seat Tube (mm)

394

431

471

534

C

Chain Stay (mm)

427

427

427

427

D

Horiz. Chain Stay (mm)

418/433*

418/433*

418/433*

418/433*

E

Front Center (mm)

683

701

722

743

F

Wheelbase (mm)

1105

1123

1144

1165

G

Bottom Bracket Drop (mm)

49

49

49

49

H

Head Tube Length (mm)

100

110

125

145

I

Head Tube Angle

67

67

67

67

J

Seat Tube Angle

73

73

73

73

K

Standover (mm)

712

733

787

839

L

Reach (mm)

386

400

415

428

M

Stack (mm)

632

641

655

674

* Depending on BioCentric II position

Geometry based on 140mm fork

Rider Height Bike Fit Chart

Height

Frame Size

5'3" - 5'9"

Small

5'8" - 6'

Medium

5'11" - 6'3"

Large

6'3" - 6'7"

X-Large

Please Note: These are only recommendations. Fit is also affected by inseam, torso length, reach, component selection and riding style.

Compatibility

73mm BB width (with BioCentric installed)

BioCentric is compatible with external bearing cranksets 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 seatpost 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 2.35" tire (tire size varies by brand, some tires may not fit)

Commpatible with most standard 1x, 2x, and 3x chainring systems.

Max 1x chainring size 32T with BioCentric II in rear position - Max 38T with BioCentric II in forward position

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