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Niner RKT 9 RDO 3-Star XT 1x Complete Mountain Bike - 2018

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Item # NNR0060

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For dreamers.

If you've ever caught yourself daydreaming deeply about the perfect bike on your way home from a ride, building one in your mind from the ground up with XC energy, a spirited disposition, but the ability to crush lines most assume are off-limits for the XC set, you're in luck. Sometimes, dreams do come true. As an plush XC bike with a podium-chasing attitude, the RKT 9 RDO 3-Star XT is a shining example of what pushing the limits of XC looks like. Let us clarify. In the case of the RKT 9, that means combining an energetic carbon frame, 120mm of squish for technical race courses or weekend exploration, and the proven efficiency of Boost spacing. Whether you're venturing onto shady, root-encrusted trails or putting it all on the line on raceday, trust the RKT 9's disarmingly playful attitude to match your enthusiasm at every turn.

The Queen of Pain herself, known simply as Ms. Rusch off-trail, has summarized the RKT 9 RDO as the answer to her dreams, which means that Niner's goal of blending a twitchy race bike with a fearless bruiser of a trail beast wasn't too much of reach. On the contrary, the RKT 9 RDO fulfills that description uncannily well, using a short head tube and longer top tube to provide line cleaning confidence up front, and Boost spacing with the lowest standover height in Niner's line for a boundless supply of snappy aggression in the rear. Boost spacing allowed Niner to chop the chainstays to a stubby 439mm, which when paired with that low standover height, results in agile cornering and power-transferring stiffness. When the opportunity to spend a weekend chasing your armor-clad pals and their 5-inch monsters around rugged singletrack presents itself, one look at the RKT 9 RDO will be enough to tell you the answer is yes.

Though geometry is a big part of the RKT 9 RDO's story, its carbon frame cannot be overlooked. Niner uses its RDO Carbon Compaction System (CCS) to ensure details like wall thickness and material distribution are flawless, eliminating unnecessary weight and structural imperfections like resin pooling. In terms of suspension, Niner fine-tuned its own CVA linkage was specifically for a low-travel XC bike for the RKT 9 RDO, so it encourages speed above all else. It maintains a firm, responsive pedaling platform even when you throw the shock open entirely, resisting harsh bottom-outs when you're surprised by a steep uphill roller on an otherwise chunky, enduro-leaning descent. Back all of that up with Shimano's second-from-the-top XT one-by drivetrain, and you're going to have a hard time getting much of anything done off-trail this season.

  • Challenge the limits of XC on this race-worthy dream bike
  • 4.7in fork absorbs bumps with 3.5in shock for backup
  • Long cockpit delivers line-cleaning confidence
  • Tight rear triangle is snappy and quick through techy spots
  • Flawless carbon frame feels weightless on-trail
  • Frame compatible with internal or external dropper
  • Boost axles increase tire clearance and wheel stiffness
  • Kitted with Shimano's workhorse racing groupset

Tech Specs

Frame Material:
carbon fiber
Rear Shock:
RockShox Monarch RL
Rear Travel:
90 mm (3.5 in)
Rockshox Reba RL Solo Air
Front Travel:
120 mm (4.72 in)
Niner Integrated 1.125 x 1.5 in tapered
Shimano XT M8000 11-speed I-Spec II
Rear Derailleur:
Shimano XT M8000 GS 11-speed Shadow Plus
Race Face Turbine, 32T
Bottom Bracket:
Race Face PF30
Shimano XT M8000 11-46t
Shimano XT HG-701 11-speed
Shimano XT M8000
Brake Type:
hydraulic disc
[front/rear] 180 / 160 mm RT86 Ice Tech
Niner Flat Top RDO
Handlebar Width:
780 mm
Niner Grrrips L/O
Niner alloy
Niner Custom (cromoly rails)
Niner Carbon 370 mm
Seat Collar:
34.9 mm
Stan's NoTubes Neo/ZTR Arch
Stan's NoTubes Neo
Front Axle:
15 x 110 mm Boost
Rear Axle:
12 x 148 mm Boost
Maxxis Ikon 3C/EXO/TR
Tire Size:
[front/rear] 2.35 / 2.20 in
Recommended Use:
Manufacturer Warranty:
5 years

Size Chart


100mm Travel Fork

Seat Tube

Effective Top Tube



Stand Over

Head Tube

Head Tube Angle

Seat Tube Angle

Bottom Bracket Height

Bottom Bracket Drop


XS 15in 21.9in 23in 15.5in 27.4in 3.7in 70.5o 74o   1.38in 17.3in 42.3in
16in 22.4in 23.2in 16in 27.6in 3.9in 71o 74o   1.38in 17.3in 42.7in
M 18in 23.2in 23.6in 16.7in 28.7in 4.3in 71o 74o   1.38in 17.3in 43.4in
L 20in 24in 24in 17.4in 30in 4.7in 71o 74o   1.38in 17.3in 44.3in
XL 22in 24.8in 24.4in 18in 31.6in 5.1in 71o 74o   1.38in 17.3in 45.1in

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Rocket Ride

  • Familiarity: I've put it through the wringer

If climbing, descending, repeat are your wheelhouse, this is your bike. If dissecting single track and having a bike that feels as nimble at the end of an epic ride as the beginning, this is your bike. While many XC type riders will pick a hardtail as their go-to ride, offering a short travel rear suspension without giving up the snappiness that a hardtail gives has been elusive, look no further. Niner has given XC riders the combination of a quick steering short travel platform that is just at home on a short-track themed event to an all-day up and down epic ride. Whether you are making the switch from a XC hardtail or looking for a lighter faster full suspension rig, the RKT 9 does not disappoint. The 90mm rear travel actually feels longer than it is while riding, taking the edge off rock gardens and trail noise to keep you grounded. My switch from a carbon hardtail to the RKT has rekindled the lust for longer rides with just a much climbing and looking forward to what the descent can throw at me.
With multiple build platforms available and the choice of a either a 100mm front fork for a quick, responsive ride or 120mm that slackens the head tube angle to give the bike a more trail feel. Add a dropper post on the 120mm fork and you have an epic/marathon bike. Keep the rigid seat post and 100mm front end and you’re riding an XC racehorse. Your choice.