When mountain bikers tell us they want one bike that does everything well, we steer them toward the JET 9 RDO. It’s our most popular mountain bike, and it consistently earns accolades from media reviewers, everyday riders, and Niner athletes. By blending the best attributes of a dedicated cross-country bike with the suspension and geometry characteristics, we’ve made the most versatile bike we could imagine.
The JET 9 RDO is made to accept your choice of 29-er and 27.5-Plus wheels and tires. The frame geometry is made to manage both technical downhills and challenging climbs. And the suspension system is designed for a blend of efficiency and performance.
Niner’s [R]Evolution geometry translates to modern trail manners when you need them most. The roomy cockpit has a comfortable reach for short stem lengths, giving you quick handling and plenty of maneuverability to blast through chunder and slash corners. And of course, the slack, 67-degree front end and long wheelbase contribute stability and self-confidence when you’re dropping into the steepest lines.
On the other hand, a steep 74-degree seat angle gets you centred over the BB for climbing. It’s paired nicely with the short 434mm chainstay length for better-pedalling efficiency when you’re crawling up the steepest sections of trail.
Niner’s Constantly Varying Arc, or CVA™, suspension design is a short dual-link, a four-bar system unique to Niner, developed in house and patented. It’s built to be supple yet stable, controlling unwanted suspension movement with calibrated anti-squat yet remaining active while climbing and descending. Courtesy of careful leverage ratio tuning, it’s sensitive to small bumps in the early stroke yet supportive in the mid-stroke, which gives riders a platform for pumping and popping off terrain. Going down, it’s consistent and controlled. With no need for heavy compression damping to control unwanted movement, CVA shocks are tuned for consistent, confidence inspiring behaviour on descents.
CVA suspension is perfectly balanced, so the result is stable yet supple, active, ground-hugging traction in every situation - cranking uphill, ripping downhill, and everywhere in between.
Carbon fiber is common, but care, quality and attention to detail are not. Niner RDO carbon fiber is a cut above. We start with the best raw carbon grades layered precisely according to the stress points on the frame structure. Niner's process employs rigid internal molds in construction and results in a tighter, more consistent carbon fabric compaction. The result? Increased precision in wall thickness and reduced resin pooling in the final product. We can build more elaborate structures with better ride tuning, increased strength, outstanding durability, and less weight.
Room to Roam
Need room to roam? Niner has it. The JET 9 has clearance to run your choice of 29er or 27.5+ wheels and tires.
Supple yet stable, and the confidence to drop into gnarly lines, knowing you’ll get consistency and control from top to bottom: that’s CVA suspension.
RDO Carbon Fiber
Niner’s premium Race Day Optimized carbon fiber means more strength, higher stiffness, and less weight.
Full Sleeve Cable Guides
No more fishin’. Niner built in end-to-end cable guides through the frame for easy installation and maintenance.
Looking for the perfect size? Check out our handy quick reference chart below (NOTE: The chart assumes average limb and torso proportions). Not sure about your size? Just send us your measurements using our Bike Sizing form and one of our experts will help you out!
Niner recommends sizing down for a more maneuverable ride or sizing up for more stability for riders who fall between sizes.
|Rider Height||Frame Size|
|5'0" to 5'5"||XS|
|5'3" to 5'9"||S|
|5'8" to 6'0"||M|
|5'11" to 6'3"||L|
|6'3" to 6'7"||XL|
|Frame||NINER RDO CARBON FIBER, CVA SUSPENSION, 120MM TRAVEL, ALUMINUM LINKAGE, ENDURO MAX PIVOT BEARINGS, FULL SLEEVE INTERNAL CABLE ROUTING|
|Fork||FOX 34 FLOAT RHYTHM GRIP EVOL, SWEEP ADJUST, 130MM, 110X15MM, 44MM OFFSET|
|Shock||FOX FLOAT DPS PERFORMANCE EVOL 3 POSITION|
|Tubes/Sealant||STANS NO TUBES SEALANT (2 X 2OZ BOTTLES)|
|Front wheel||NINER ALLOY, 30MM INNER WIDTH, 110X15MM|
|Rear wheel||NINER ALLOY, 30MM INNER WIDTH, 148X12MM|
|Front Tire||SCHWALBE NOBBY NIC EVO SUPER TRAIL TLE ADDIX SPEEDGRIP 2.6|
|Rear Tire||SCHWALBE NOBBY NIC EVO SUPER TRAIL TLE ADDIX SPEEDGRIP 2.35|
|Brake Levers||SRAM LEVEL|
|Brake rotors||180/180MM G2CS ROTORS|
|Chain||SRAM SX EAGLE 12SP|
|Rear shifter||SRAM SX EAGLE 12SP|
|Rear derailleur||SRAM SX EAGLE 12SP|
|Cassette||SRAM PG1210 11-50T|
|Crankset||SRAM X1 1K EAGLE DUB 32T|
|Bottom bracket||SRAM DUB BSA THREADED|
|Saddle||NINER CUSTOM TR WITH CR-MO RAILS, PRINTED NINER GRAPHIC|
|Seatpost||KS LEV SI (XS/S-100MM, M/L/XL-150MM)|
|Handlebar||RACE FACE AEFFECT R 780MM WIDE, 20MM RISE, 35MM CLAMP|
|Stem||RACE FACE AEFFECT R 40MM, 35MM CLAMP|
|Headset||NINER INTERNAL ZS SHIS DESCRIPTION ZS44/28.6|ZS56/40|
|Grips||NINER GRRRIPS L/O NYLON FLANGED SOFT COMPOUND|
|Approximate weight||29.6 LBS|
|Top Tube Length||562||580||599||621||644|
|Head Tube Angle||67°||67°||67°||67°||67°|
|Head Tube Length||95||105||120||130||145|
|Seat Tube Angle||74°||74°||74°||74°||74°|
|Seat Tube Length||356||381||432||483||533|
|Bottom Bracket Drop||28||28||28||28||28|
We're an authorized Niner dealer, which means that every bike we sell is backed by Niner's warranty, including a one-year complete bike warranty and a lifetime frame warranty. For full details, click here.