Niner SIR 9 GX Eagle 29´´ 2020 マウンテンバイク

Take charge of your ride with this Reynolds 853 Steel frame designed around Niner´s [R]evolution trail geometry which begs the rider to push their limits. Ride it hard. Ride it fast. After all, it´s made from a truly time-tested material that´s been air hardened and heat treated. The efficient, yet compliant ride quality of the SIR 9 harkens back to a simpler time. A time without linkages and complicated shock settings. A time where all the energy you put into the pedals moves you forward.


Features:

- Redesigned bottom bracket and chainstay junction: Keeping ride quality in mind as well as tire clearance, we went to great lengths to design this crucial frame junction. The PF 30 Bottom Bracket allows you to run a standard press fit bottom bracket or, if simplicity is your thing, throw in an eccentric bottom bracket and run singlespeed. A hidden plate inside the chainstay yoke stiffens and strengthens in order to improve power transfer.
- Multiple mounting options: Pack it in, pack it out: Eighteen. As in 18 mounting points allow you to run racks and fenders, a bento box, water bottles, etc. This frame is versatile.
- Niner´s [R]evolution trail geometry: Our trail geo puts the rider in the sweet, balanced spot on the bike. Longer top tube, slacker headtube and shorter chainstays all mean more fun and better handling.


Specifications:

- BB type: 73 mm PF30 BB Shell (Adapters Required For BSA Type BBs)
- Shock size: N/A
- Shock mounting hardware: N/A
- Shock sag: N/A
- Seatpost size: 27.2
- Seat collar size: 31.8
- Front derailleur: 34.9 Side Swing, Front Pull Front Derailleur
- Headset: 1.125´´ X 1.5´´ Tapered Zero Stack Head Tube, 44mm Upper, 56mm Lower, Cane Creek Description: ZS44/28.6 ZS56/40
- Bearing specs: N/A
- Rear wheel spacing: 148 X 12 Rear Spacing
- Bottle mount location descriptions: All Sizes Have 2 Inner Triangle Bottle Mounts, 1 Mount Under Down Tube
- Max tire size: Can Fit Up To A 29 X 2.4 Or 27.5 X 3.0 Tire (Tire Sizes Vary By Brand, Some Tires May Not Fit)
- Chainring configurations: Compatible With Standard 1X, 2X And 3X Systems
- 1x max chain ring size: 36T
- Q-Factor: 168 mm
- Max fork travel: 120 mm
- ISCG compatibility: N/A
- Max rotor size: Post Mount Disc Brake 180 mm Max Rotor Size
- Fork offset: Designed Around 51mm Offset
- Biocentric: Compatible With Biocentric


Technology:

- Versatility is the name of the game. Boost spacing allows for wheel and tire options. Run 29” wheels up to 2.4” in width or 27.5 plus up to 3” in width. (Some tires and rim combinations may not fit.)
- A proper tapered head tube allows riders to keep up with front fork technology.
- Steel may be classic, but that doesn´t mean it can´t keep up with the times. Run that dropper. Or not. You have options. Options are good.
- The chainstay yoke is a piece of engineering ingenuity. To increase strength and stiffness, and to meet international ISO mountain biking standards, we created a nearly unified yoke which allowed us to create longer and stronger welds to the bottom bracket. And hidden inside, is a plate that adds to the stiffness.
- The new SIR 9 isn´t a do-it-all bike. Then we´d call it the Unicorn 9. What it is, however, is a –do-it-most” bike, as in, you can do most of what you want to do on it and do it well. No, it ain´t no lightweight race bike, but you can race it. (It´s no pig either) And it ain´t no 10 inch downhill bike, but you sure can shred on it. And it ain´t no skinny-tired gravel grinder, but you can load it up and head out on your own adventure. It´s truly a bike that you can –Do It Most” on.


Main Specs
Frame: Sir 9 Reynolds 853 Steel Boost
Fork: Rock Shox Revelation RC29 120 mm

Groupset
Rear Derailleur: SRAM GX Eagle Lunar
Shifters: SRAM GX Eagle Trigger
Cranks: SRAM GX Eagle Lunar
Chainrings: 34t
Cassette: SRAM PG1230 10-50
Front Brake: Formula Cura Formula fixed 180 mm
Rear Brake: Formula Cura Formula fixed 160 mm
Chain: SRAM NX Eagle
Bottom Bracket: SRAM NX Eagle 175 mm 34 teeth

Wheels
Rims: TFHPC Enduro Boost
Tires: WTB Trail Boss Light Fast Rolling 29x2.25

Components
Handlebar: TFHPC Alu 710 mm
Stem: TFHPC +-5º 70 mm
Saddle: Ergon SM10 Sport Men
Seatpost: Rock Shox Reverb 30.9x125 mm

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