Niner SIR 9 4-Star
Niner SIR 9 20214600
Cross CountryColour / Cement Grey/Black
Size / SM, MD, LG, XL
Weight / 27 lb 11.2 oz (12,565 g)
Manufacturer WebsiteAt a glance
The 2021 Niner SIR 9 4-Star is an Cross Country Steel mountain bike. It sports 29" wheels, is priced at $4,600 USD, comes in a range of sizes, including SM, MD, LG, XL, has Fox suspension and a Shimano drivetrain. The bike is part of Niner's SIR 9 range of mountain bikes.– External cable routing, with internal dropper post routing, – Includes Stan’s NoTubes sealant, – Singlespeed compatible with BioCentric 30 bottom bracket system, – Compatible with 27.5+ wheels/tires, – Rack and fender mounts, – Weight given for size MD
Where To Buy
Niner
Niner SIR 9 4-StarReviews
Specifications
Frameset
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FrameHand-welded air-hardened heat-treated Reynolds 853 steel
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ForkFOX FLOAT 34 Step-Cast (SC) Factory, EVOL, FIT4 damper, 3-position with adjust, Kashima coating, 44mm offset, 120mm
Wheels
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HubsDT Swiss XM 1700 Spline 30 wheelset, 110x15mm Boost front, 148x12mm Boost rear with MICRO SPLINE driver
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WheelsDT Swiss XM 1700 Spline 30 wheelset
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Wheel Size29"
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SpokesDT Swiss XM 1700 Spline 30 wheelset
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TiresSchwalbe Nobby Nic, Evo, Super Trail, TLE, Addix Speedgrip, 29" x 2.6" (front), 2.35" (rear)
Drivetrain
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Chain427mm, None, Race Face Next R, 32 tooth, Shimano Deore XT M8100, with QUICK-LINK
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CrankRace Face Next R Carbon
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Bottom Bracket52mm drop, Race Face, PF30 press-fit
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Rear DerailleurShimano Deore XT M8100, 12-speed, SGS cage
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ShiftersShimano Deore XT M8100, 12-speed, I-SPEC EV bracket
Components
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BrakesetShimano Deore XT M8100, 2-piston, metal pads with cooling fins, Shimano MT800 CENTER LOCK rotors (180mm front, 160mm rear), Shimano Deore XT M8100
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HandlebarRace Face Next R, 800mm width, 20mm rise, 35mm clamp diameter
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SaddleNiner Custom TR, CrN-Ti rails
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SeatpostKS LEV SI dropper, 30.9mm, Single bolt, 34.9mm, 30.9mm, Single bolt, 34.9mm
Drop:
100mm (SM)
150mm (MD/LG/XL) -
StemRace Face Turbine R, 40mm length, 35mm bar clamp
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GripsNiner Grrrips, lock-on, soft compound
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HeadsetNiner Internal, ZS44/28.6 upper, ZS56/40 lower
FAQ
Q: How much is a 2021 Niner SIR 9 4-Star?
A 2021 Niner SIR 9 4-Star is typically priced around $4,600 USD when new. Be sure to shop around for the best price, and also look to the used market for a great deal.
Q: Where to buy a 2021 Niner SIR 9 4-Star?
The 2021 Niner SIR 9 4-Star may be purchased directly from Niner.
Q: How much does a 2021 Niner SIR 9 4-Star weigh?
A 2021 Niner SIR 9 4-Star weights 27 lb 11.2 oz (12,565 g).
Q: What size wheels does the 2021 Niner SIR 9 4-Star have?
The 2021 Niner SIR 9 4-Star has 29" wheels.
Q: What size 2021 Niner SIR 9 4-Star should I get?
The 2021 Niner SIR 9 4-Star comes in sizes SM, MD, LG, XL. After measuring your height, use the size chart below to find the typical Niner SIR 9 4-Star size for your height. Remember that these sizes are a general guide and bike sizes can vary between riders and bikes. The best way to find your size is to go for a test ride.
| Rider Height (cm) | Rider Height (in) | Frame Size |
|---|---|---|
| 148cm - 158cm | 4'10" - 5'2" | XS |
| 158cm - 168cm | 5'2" - 5'6" | S |
| 168cm - 178cm | 5'6" - 5' 10" | M |
| 178cm - 185cm | 5'10" - 6'1" | L |
| 185cm - 193cm | 6'1" - 6'4" | XL |
| 193cm - 198cm | 6'4" - 6'6" | XXL |
Discussion
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