2022 Niner SIR 9 Inventory

For the most physically challenging trails.

Make way for the SIR 9. A trusted mountain bike made of steel. You read that right. "SIR" stands for "Steel Is Real." The durable and versatile frame you've always wanted, made with Reynolds 853 steel. This isn't just a heavy chunk of metal though. The Reynolds 853 alloy get stronger after it's welded and because it's so strong, Niner was able to build more bike with less material. Steel is strong

The SIR 9 is designed for both singletrack and bikepacking. It includes 18 total mounting points for racks, bags, fenders, bottles, and whatever you can think of, including rear rack mount that can handle up to 55 pounds.

It supports multiple wheel sizes—29-inch or 27.5+—and can be set up as a geared or single-speed bike, thanks to Niner's BioCentric 30 bottom bracket. The bottom bracket design allows for easy adjustments to chain tension and bottom bracket height.

Niner calls this a "trail country" bike. Other people might call it a down country bike. Or they might just call it a modern style bike made with good old-fashioned steel, that you can ride wherever you dare.

Key Details

  • Available In

    Steel

  • Front Travel

    120mm

  • Wheels

    27.5" & 29"

  • Rear Travel

    Hardtail

  • 2022 Niner SIR 9 in Cement Grey/Black

Specifications

2022 Niner SIR 9

2-STAR SRAM SX EAGLE 3-STAR SRAM GX EAGLE 3-STAR SRAM GX EAGLE AXS LTD 4-STAR SHIMANO XT 5-STAR SRAM X01 EAGLE FRAME ONLY
AVAILABLE FRAME SIZES SM, MD, LG, XL SM, MD, LG, XL SM, MD, LG, XL SM, MD, LG, XL SM, MD, LG, XL SM, MD, LG, XL
AVAILABLE COLORS CEMENT GRAY/BLACK CEMENT GRAY/BLACK CEMENT GRAY/BLACK CEMENT GRAY/BLACK CEMENT GRAY/BLACK CEMENT GRAY/BLACK
FRAME HAND WELDED REYNOLDS 853 STEEL; EXTERNAL CABLE ROUTING; INTEGRATED BOTTLE, BAG, RACK AND FENDER MOUNTS; 12X148 THRU AXLE HAND WELDED REYNOLDS 853 STEEL; EXTERNAL CABLE ROUTING; INTEGRATED BOTTLE, BAG, RACK AND FENDER MOUNTS; 12X148 THRU AXLE HAND WELDED REYNOLDS 853 STEEL; EXTERNAL CABLE ROUTING; INTEGRATED BOTTLE, BAG, RACK AND FENDER MOUNTS; 12X148 THRU AXLE HAND WELDED REYNOLDS 853 STEEL; EXTERNAL CABLE ROUTING; INTEGRATED BOTTLE, BAG, RACK AND FENDER MOUNTS; 12X148 THRU AXLE HAND WELDED AIR HARDENED REYNOLDS 853 STEEL; EXTERNAL CABLE ROUTING; INTEGRATED BOTTLE, BAG, RACK AND FENDER MOUNTS; 12X148 THRU AXLE 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 MARZOCCHI BOMBER Z2 RAIL, SWEEP ADJ, 120MM, 110X15MM, 44MM OFFSET MARZOCCHI BOMBER Z2 RAIL, SWEEP ADJ, 120MM, 110X15MM, 44MM OFFSET MARZOCCHI BOMBER Z2 RAIL, SWEEP ADJ, 120MM, 110X15MM, 44MM OFFSET FOX 34 SC FLOAT FACTORY EVOL FIT4, 3 POSITION W/ ADJ, KASHIMA COAT, 120MM, 110X15MM, 44MM OFFSET
SHOCK N/A N/A N/A N/A N/A
TUBES/SEALANT STANS NO TUBES SEALANT (2 X 2OZ BOTTLES) STANS NO TUBES SEALANT (2 X 2OZ BOTTLES) STANS NO TUBES SEALANT (2 X 2OZ BOTTLES) STANS NO TUBES SEALANT (2 X 2OZ BOTTLES) STANS NO TUBES SEALANT (2 X 2OZ BOTTLES)
FRONT WHEEL NINER ALLOY, 30MM INTERNAL WIDTH, 110X15MM NINER ALLOY, 30MM INTERNAL WIDTH, 110X15MM NINER ALLOY, 30MM INTERNAL WIDTH, 110X15MM NINER ALLOY, 30MM INTERNAL WIDTH, 110X15MM DT SWISS XMC 1501 SPLINE 30, CENTERLOCK, 110X15MM
REAR WHEEL NINER ALLOY, 30MM INTERNAL WIDTH, 148X12MM NINER ALLOY, 30MM INTERNAL WIDTH, 148X12MM NINER ALLOY, 30MM INTERNAL WIDTH, 148X12MM NINER ALLOY, 30MM INTERNAL WIDTH, 148X12MM DT SWISS XMC 1501 SPLINE 30, CENTERLOCK, 148X12MM, RATCHET EXP 36
FRONT TIRE SCHWALBE NOBBY NIC EVO SUPER TRAIL TLE ADDIX SPEEDGRIP 2.6 SCHWALBE NOBBY NIC EVO SUPER TRAIL TLE ADDIX SPEEDGRIP 2.6 SCHWALBE NOBBY NIC EVO SUPER TRAIL TLE ADDIX SPEEDGRIP 2.6 SCHWALBE NOBBY NIC EVO SUPER TRAIL TLE ADDIX SPEEDGRIP 2.6 SCHWALBE NOBBY NIC EVO SUPER TRAIL TLE ADDIX SPEEDGRIP 2.6
REAR TIRE SCHWALBE NOBBY NIC EVO SUPER TRAIL TLE ADDIX SPEEDGRIP 2.35 SCHWALBE NOBBY NIC EVO SUPER TRAIL TLE ADDIX SPEEDGRIP 2.35 SCHWALBE NOBBY NIC EVO SUPER TRAIL TLE ADDIX SPEEDGRIP 2.35 SCHWALBE NOBBY NIC EVO SUPER TRAIL TLE ADDIX SPEEDGRIP 2.35 SCHWALBE NOBBY NIC EVO SUPER TRAIL TLE ADDIX SPEEDGRIP 2.35
BRAKES SRAM LEVEL SRAM G2 R SRAM G2 R SHIMANO XT M8100, METAL PAD W/ FIN SRAM G2 RSC
BRAKE LEVERS SRAM LEVEL SRAM G2 R SRAM G2 R SHIMANO XT M8100 SRAM G2 RSC
BRAKE ROTORS SRAM LEVEL 180/160MM SRAM CENTERLINE X 180/160MM SRAM CENTERLINE X 180/160 MT800 ROTORS 180/160 CENTERLINE X ROTORS
CHAIN SRAM SX EAGLE 12SP SRAM GX EAGLE 12 SP SRAM GX EAGLE 12 SP SHIMANO XT M8100 W/ QUICKLINK SRAM X01 EAGLE 12SP
FRONT SHIFTER N/A N/A N/A N/A N/A
REAR SHIFTER SRAM SX EAGLE 12SP SRAM GX EAGLE 12 SP SRAM GX EAGLE AXS 12SP SHIMANO XT M8100 12SP I-SPEC EV SRAM X01 EAGLE 12SP
FRONT DERAILLEUR N/A N/A N/A N/A N/A
REAR DERAILLEUR SRAM SX EAGLE 12SP SRAM GX EAGLE 12 SP SRAM GX EAGLE AXS 12SP WITH BATTERY COVER SHIMANO XT M8100 SGS 12SP SRAM X01 EAGLE 12SP
CASSETTE SRAM PG 1210 11-50T SRAM EAGLE XG 1275, 10-52T SRAM EAGLE XG 1275, 10-52T SHIMANO XT M8100 12SP, 10-51T SRAM EAGLE XG 1295, 10-52T
CRANKSET SRAM X1 1K EAGLE DUB, 32T (S/M/L - 170MM, XL - 175MM) SRAM DESCENDANT 7K EAGLE DUB, 32T (S/M/L - 170MM, XL - 175MM) SRAM DESCENDANT 7K EAGLE DUB, 32T (S/M/L - 170MM, XL - 175MM) RACEFACE NEXT R CARBON 12SP, 32T (S/M/L - 170MM, XL - 175MM) SRAM X1 EAGLE CARBON DUB, 32T (S/M/L - 170MM, XL - 175MM)
BOTTOM BRACKET SRAM DUB PF30 SRAM DUB PF30 SRAM DUB PF30 RACEFACE PF30 SRAM DUB PF30
SADDLE NINER CUSTOM TR WITH CRMO RAILS, EMBOSSED NINER GRAPHIC NINER CUSTOM WITH CRMO RAILS, EMBOSSED NINER GRAPHIC NINER CUSTOM WITH CRMO RAILS, EMBOSSED NINER GRAPHIC NINER CUSTOM TR WITH CRN-TI RAILS, PRINTED NINER GRAPHIC NINER CUSTOM TR WITH CRN-TI RAILS, PRINTED NINER GRAPHIC
SEATPOST NINER ALLOY, 370MM KS LEV SI (XS/S-100MM, M/L/XL-150MM) KS LEV SI (XS/S-100MM, M/L/XL-150MM) KS LEV SI (XS/S-100MM, M/L/XL-150MM) KS LEV SI (XS/S-100MM, M/L/XL-150MM)
HANDLEBAR RACE FACE AEFFECT R 780MM WIDE, 20MM RISE, 35MM CLAMP RACE FACE AEFFECT R 780MM WIDE, 20MM RISE, 35MM CLAMP RACE FACE AEFFECT R 780MM WIDE, 20MM RISE, 35MM CLAMP RACE FACE NEXT R 800MM WIDE, 35MM RISE, 35MM CLAMP RACE FACE NEXT R 800MM WIDE, 35MM RISE, 35MM CLAMP
STEM RACE FACE AEFFECT R 40MM, 35MM CLAMP RACE FACE AEFFECT R 40MM, 35MM CLAMP RACE FACE AEFFECT R 40MM, 35MM CLAMP RACE FACE TURBINE R 40MM, 35MM CLAMP RACE FACE TURBINE R 40MM, 35MM CLAMP
HEADSET NINER INTERNAL ZS SHIS DESCRIPTION ZS44/28.6|ZS56/40 NINER INTERNAL ZS SHIS DESCRIPTION ZS44/28.6|ZS56/40 NINER INTERNAL ZS SHIS DESCRIPTION ZS44/28.6|ZS56/40 NINER INTERNAL ZS SHIS DESCRIPTION ZS44/28.6|ZS56/40 NINER INTERNAL ZS SHIS DESCRIPTION ZS44/28.6|ZS56/40
GRIPS NINER GRRRIPS L/O NYLON SOFT COMPOUND NINER GRRRIPS L/O NYLON SOFT COMPOUND NINER GRRRIPS L/O NYLON SOFT COMPOUND NINER GRRRIPS L/O SOFT COMPOUND NINER GRRRIPS L/O SOFT COMPOUND
APPROXIMATE WEIGHT 28.8 LBS 27.1 LBS 27.1 LBS 26.3 LBS 25.6 LBS

Details

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Trail-Ready Geometry

The bike is stable, trail-specced, and ready to shred thanks to the long top tube and slack head tube angle.

Geometry

2022 Niner SIR 9

120
SM MD LG XL
TT LENGTH 595 603 627 652
SEAT TUBE LENGTH 396 421 485 533
CHAINSTAY LENGTH ACTUAL 430 430 430 430
HORIZONTAL CHAINSTAY 427 427 427 427
FRONT CENTER 693 711 737 764
WHEELBASE 1119 1136 1162 1189
BB DROP 52 52 52 52
HEAD TUBE LENGTH 100 110 125 145
HEAD TUBE ANGLE 68 68 68 68
SEAT TUBE ANGLE 74 74 74 74
STANDOVER HEIGHT 721 739 791 830
REACH 410 425 445 465
STACK 611 620 634 652
Bike Geometry Chart
2022 Niner SIR 9 Inventory

Frequently Asked Questions

2022 Niner SIR 9

  • What's the warranty on this bike?

    Niner bikes purchased after Sept 1, 2019 include a limited lifetime frame warranty for the original owner. Niner branded components purchased after January 1, 2017 are also covered by a 5-year limited warranty. You must register your product with Niner to be eligible for warranty coverage. You can read the full details here: ninerbikes.com/pages/warranty

  • What size 2022 Niner Sir 9 will fit me?

    The 2022 SIR "Steel is Real" 9 comes in sizes S through XL. For riders from 5'3" to 5'9", the size Small frame is recommended. For riders from 5'8" to 6'0", size Medium should be a good fit. Riders from 5'11" to 6'3" should find Large to be a good fit. Size XL is for rides 6'3" to 6'7". If you're in between sizes, we recommend demoing the bike at a bike shop.

  • Does the 2022 Niner Sir 9 come in women's sizes?

    Although the sizes aren't broken up by gender, this bike is a good fit for women slightly below average height and taller. Size S is for riders 5'3" to 5'9". Unfortunately, it's not available in frame sizes smaller than that.

  • Can I run fat bike tires on the 2022 Niner Sir 9?

    If you use 27.5 inch tires, you can use up to three inch wide tires, aka plus tires. Full fatbike tires (4" and above) won't fit however.