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.
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.
REYNOLDS 853 STEEL PROVIDES THE SUPPLE, COMFORTABLE RIDE THIS LEGENDARY MATERIAL IS KNOWN FOR.
COMPATIBLE WITH 29X2.4 OR 27.5X3.0 TIRES TO OFFER THE CHOICE OF MAXIMUM ROLL OVER OR ULTIMATE TRACTION AND STABILITY.
GEOMETRY IS OPTIMIZED FOR MODERN TRAIL RIDING, LONG DAYS IN THE SADDLE AND ALL AROUND GOOD TIMES.
INTEGRATED FRAME BAG MOUNTS INSIDE FRONT TRIANGLE.
BENTO BOX MOUNTS ON TOP TUBE TO OFFER ADDITIONAL STORAGE OPTIONS WITHIN EASY REACH.
REAR RACK MOUNTS: WEIGHT LIMIT 55LBS
THE 73MM PF30 BB SHELL IS MADE FOR EITHER GEARED OR SINGLESPEED DRIVETRAINS, WITH THE NINER BIOCENTRIC 30
148 X 12 BOOST REAR SPACING
COMPATIBLE WITH 1X (MAX RING 36T) AND 2X (26/36 OR BIGGER) DRIVETRAIN SYSTEMS
COMPATIBLE WITH 2X (26/36 OR BIGGER) DRIVETRAIN SYSTEMS, 34.9 SIDESWING FRONT PULL FRONT DERAILLEUR
BB type: 73Mmm PF30 BB Shell (Adapters Required For BSA Type BBs)
Shock size: N/A
Shock mounting hardware: N/A
Shock sag: N/A
Seatpost size: 30.9
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
Max fork travel: 120mm
ISCG compatibility: N/A
Max rotor size: Post Mount Disc Brake _ 180mm Max Rotor Size
Fork offset: Designed Around 51mm Offset
Biocentric: Compatible With Biocentric 30
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