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Niner SIR 9 2-Star Bike 2020
Item #: BI001501
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Please Note: This bike is not eligible for shipping and can only be purchased at one of our retail locations
Niner SIR 9 2-Star Bike 2020
Steel is Real. You Feel?
No bike demonstrates "steel is real" quite as clearly as the SIR 9. SIR even stands for "Steel is Real"! With lighter materials such as carbon and aluminum dominating the market, steel bikes remain as relevant and desirable today as they were 50 years ago. Niner proves that heartily with the SIR 9.
With that said, we must realize that all steel is NOT created equal. The Niner SIR tubing is a custom selected set that utilizes high-quality tube options for each application within the frame. The front triangle is comprised of Reynolds 853 DZB (Double Zone Butting) tubing which is heat-treated to give high strength and damage resistance, while achieving the steel properties that allow thin walls to be used, so that lighter, yet still fatigue-resistant lines can be built.
Niner's strategic and witty material selection and placement allows the downtube to attach lower on the headtube, reducing front end torsional flex and increasing steering precision. The superior strength of the Reynolds 853 DZB downtube combined with a butting profile in the rest of the tubes, maintains a lively ride quality that keeps the weight impressively low for a steel frame.
Like the rest of Niner's bikes, the SIR 9 utilizes their tried and true geometry along with plenty of keen features to bridge the gap between classic simplicity and modern diligence. The spirit of single speed riding was a strong influence in the design of the SIR 9. Ditching the gears and running single speed is super easy thanks to the included BioCentric II bottom bracket system. Biocentric makes chain tension adjustment easy across a wide range of gears and eliminates the need for adjustable dropouts, allowing you to lock your preferred setting in place without having to re-adjust every time you decide to pull out the wheel or switch from geared mode. It achieves this by offsetting the bottom bracket spindle 8.5mm from the center, offering greater range of adjustment compared to a more traditional EBB setup.
Beyond the frame, we're really stoked on the component selection on this bike. It's truly dialed out of the box. The wide-range SRAM SX Eagle 12 speed drivetrain with a SRAM X1 crankset is a handsome and befitting group to complement the no-nonsense frame. SIR 9 rolls on Niner Alloy wheels wrapped in Maxxis tires. A Marzocchi fork is ready to soak up the trail chatter with 120mm of smooth air travel up front, and tying it all together is a Race Face cockpit. There's really not much to complain about here!
Features
- Custom engineered Reynolds 853 steel tubeset with custom-shaped, double-butted Reynolds 853 DZB main tubes delivers a lively ride that gobbles up trail vibration without sacrificing stiffness where it counts
- 44mm Reynolds 631 head tube allows use of modern tapered or old-school 1-1/8" forks
- Niner BioCentric II Bottom bracket system and removable down tube cable stops allows clean singlespeed or geared setup
- SRAM SX 1x12 drivetrain provides a wide gear range in a simple, bulletproof setup
- Marzocchi Z2 120mm front suspension provides a smooth and supple ride
| Frame | HAND WELDED REYNOLDS 853 STEEL; EXTERNAL CABLE ROUTING; INTEGRATED BOTTLE, BAG, RACK AND FENDER MOUNTS; 12X148 THRU AXLE |
|---|---|
| Fork | MARZOCCHI BOMBER Z2 RAIL, SWEEP ADJ, 120MM, 110X15MM, 44MM OFFSET |
| Rear Shock | None |
| Headset | NINER INTERNAL ZS SHIS DESCRIPTION ZS44/28.6|ZS56/40 |
| Shifter | SRAM SX EAGLE 12SP |
| Front Derailleur | N/A |
| Rear Derailleur | SRAM SX EAGLE 12SP |
| Crankset | SRAM X1 1K EAGLE DUB, 32T |
| Bottom Bracket | SRAM DUB PF30 |
| Chain | SRAM SX EAGLE 12SP |
| Cassette | SRAM PG 1210 11-50T |
| Brakes | SHIMANO XT M8100, METAL PAD W/ FIN |
| Wheelset | NINER ALLOY, NINER GRAPHIC |
| Tires | MAXXIS MINION DHF 3C/EXO/TR 2.5 WT FRONT, MAXXIS REKON 3C/EXO/TR 2.4 WT REAR |
| Handlebar | RACE FACE AEFFECT R 780MM WIDE, 20MM RISE, 35MM CLAMP |
| Stem | RACE FACE TURBINE R 40MM, 35MM CLAMP |
| Grips/Bar Tape | NINER GRRRIPS L/O FLANGED |
| Seatpost | KS LEV SI (XS/S-100MM, M/L/XL-150MM) |
| Seatclamp | NINER |
| Saddle | NINER CUSTOM TR WITH CRN-TI RAILS, PRINTED NINER GRAPHIC |
| Intended Use | XC, TRAIL |
Note: Components are subject to change without notice.
| Size | Small | Medium | Large | Extra Large |
|---|---|---|---|---|
| A: Seat Tube Length | 396 | 421 | 485 | 533 |
| B: Effective Top Tube | 595 | 603 | 627 | 652 |
| C: Stack | 611 | 620 | 634 | 652 |
| D: Reach | 410 | 425 | 445 | 465 |
| F: BB Drop | 52 | 52 | 52 | 52 |
| 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 | 721 | 739 | 791 | 830 |
| K: Chainstay Length | 430 | 430 | 430 | 430 |
| L: Wheelbase | 1118 | 1136 | 1162 | 1189 |
| Frame Size | Small | Medium | Large | Extra Large |
|---|---|---|---|---|
| Rider Height | 5'3-5'9 | 5'8-6'0 | 5'11-6'3 | 6'3-6'7 |
| Size | Small | Medium | Large | Extra Large |
|---|---|---|---|---|
| A: Seat Tube Length | 15.6 | 16.6 | 19.1 | 21.0 |
| B: Effective Top Tube | 23.4 | 23.7 | 24.7 | 25.7 |
| C: Stack | 24.1 | 24.4 | 25.0 | 25.7 |
| D: Reach | 16.1 | 16.7 | 17.5 | 18.3 |
| F: BB Drop | 2.0 | 2.0 | 2.0 | 2.0 |
| G: Head Tube Length | 3.9 | 4.3 | 4.9 | 5.7 |
| H: Head Tube Angle | 68.0 ° | 68.0 ° | 68.0 ° | 68.0 ° |
| I: Seat Tube Angle | 74.0 ° | 74.0 ° | 74.0 ° | 74.0 ° |
| J: Standover Height | 28.4 | 29.1 | 31.1 | 32.7 |
| K: Chainstay Length | 16.9 | 16.9 | 16.9 | 16.9 |
| L: Wheelbase | 44.0 | 44.7 | 45.7 | 46.8 |
| Frame Size | Small | Medium | Large | Extra Large |
|---|---|---|---|---|
| Rider Height | 5'3-5'9 | 5'8-6'0 | 5'11-6'3 | 6'3-6'7 |
CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals including (Cadmium, Phthalates, Bisphenol, Nickel (Metallic), di(2-ethylhexyl)phthalate "DEHP"), which is known to the State of California to cause cancer and/or cause birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals including (Cadmium, Phthalates, Bisphenol, Nickel (Metallic), di(2-ethylhexyl)phthalate "DEHP"), which is known to the State of California to cause cancer and/or cause birth defects or other reproductive harm. For more information, go to Q & A
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Due to manufacturer restrictions, this product cannot be shipped to the following locations:- Aruba
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- Ecuador
- Egypt
- Spain
- Estonia
- Ethiopia
- Finland
- Fiji
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- Gabon
- United Kingdom
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- Uganda
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- Uzbekistan
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- Viet Nam
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- Wallis and Futuna
- Yemen
- South Africa
- Zambia
- Zimbabwe
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