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Niner RKT 9 RDO 4-Star Bicycle

For 2019, Niner's RKT 9 RDO features the same generation frame and just a few changes from Niner's previous 4-Star build, such as the move to the SRAM DUBB crank/BB standard. The RKT9 RDO is Niner's true XC race full-suspension frame design, one that is capable of so much more. This build is the 2019 Niner 4-Star complete bicycle with SRAM Eagle X01 12 speed, Fox Factory 120mm Fork and NoTubes Arch S1 wheelset into a cost effective but wholly capable race and XC Trail rig that takes advantage of the RKT9's race oriented design but won't break the bank compared to an Eagle XX1 or an equivalent XTR-level build.

Dedicated Niner fans had been waiting for the 29er specific company to release a full-suspension true XC race design from the get-go. The RKT 9 RDO is the frame many wanted, and while it is a premium XC race design, it exceeds all expectations as this 2nd generation was developed to maximize a 120mm fork. It's strange, but for many the RKT9 is a true XC Trail bike now, but it owes this to Niner's suspension experience with 29" wheels the strength of the frame. It's simple, the 90mm suspension feels like a longer travel bike- especially with the 29" wheel and Niner CVA suspension. It's controlled by a Fox Float DPS shock, the rider can pick and choose feel and response based on trail or course requirements. Niner has embraced Boost spacing for the rear, pushing out to 148mm for incredible rear triangle and wheel stiffness, with the ability to run a true 2.4" tire. Shorter chainstays and wheelbase bring the handling within millimeters of the Air 9 RDO hardtail in FS frame that weighs under 4.5lbs. The RKT 9 RDO exudes speed and control and is ready for anything from XC trail to XC race through Marathon and epic racing.

Niner's patented 29er specific suspension design is call CVA, for Constantly Varying Arc travel and has been optimized for 90mm travel. The RKT 9 Carbon RDO is smooth and efficient, driven by the CVA/RKT 9 specially tuned (DDS2) Fox Float DPS shock. The Kashima Coat keeps action smooth and clean, while the handlebar remote three-position lever allows the rider to easily select the most effective platform for the conditions. Geometry is almost identical to Niner's hardtails and has been optimized for a 120mm fork. The real benefits of RKT 9's CVA and the Boost rear end is how the chainstays drop to 440mm from the Jet 9's 455mm, and how much stiffer the rear triangle is overall.

The Fox Racing Shox 34 Float 120mm FIT4 Factory Fork built for the 15mm/110mm thru-axle Boost standard is a great complement to the build. The FIT4 cartridge features tunable three-position settings, with the latest EVOL canister delivering consistently. The handlebar lockout keeps things at hand. The fork provides a perfect overall balance for the frameset. NoTubes is building their 29er wheels with Neo Boost hubs. For this build, which we conceived as a fast XC/Marathon trail bike more than a true XC race only set-up the Arch S1 29er Wheelset. The wheels are actually pretty light, but more resilient and wider than the Crest, with the additional rim strength of this BST tubeless ready wheelset adding to overall lateral Boost stiffness. The front tire is the fast and capable Maxxis Rekon 3C/EXO/TR 2.4" WT front tire while the rear is the Rekon Race 2C/EXO/TR 2.25".

Your drivetrain is the incredible SRAM Eagle X01 12-speed system, with a 32T ring and 10-50 XG Eagle cassette. The 1x simplicity and massive gearing capability of the Eagle drivetrain is amazing in itself, but more amazing in how well it works, and how well the shifter and rear derailleur handle the huge range. It is highly efficient, sure, and reliable. Though riders do opt for a chain guide of some kind, this X01 has the X-Sync 2 chainring which makes chain drops a rarity. The 4-Star build now uses the SRAM Guide RSC hydraulic disc brakes, with 180mm Centerline front rotor and 160mm rear.

Your cockpit starts with a Niner RDO Carbon 370mm seatpost (though the frame is integrated dropper compatible). It carries a Niner Custom TR Saddle with carbon/ti rails- an MTB specific saddle that sort of works for just about everyone. A Niner RDO alloy stem carries the 780mm wide, 9mm sweep Niner Flat Top RDO Carbon handlebar dressed with Niner Lock-on Grrrips. Overall the cockpit is light, set-up flexible, and perfectly suits the overall build of today's trial ready XC ride. The bar width is ideal when you need leverage, as well as tearing through technical singletrack, and can be cut down if desired. SRAM's Matchmaker clamp system keeps the set-up clean, leaving room on the bar

Our professional shop techs build the bike then pass it to their equally adept co-workers in the shipping department. Excel has been building and shipping bikes from Boulder, CO since 1988, and we will take great care with yours. Our staff is available during business hours Monday through Saturday to answer any and all questions. Please feel free to email us or call 800.627.6664 for assistance. If you are looking for a speed demon of a XC trail bike, the RKT 9 RDO 4-Star Bicycle has been built just for you.


  • Complete XC trail bike with 90mm frame, 120mm fork travel, 1x12 Eagle X01 drivetrain
  • Light, versatile, premium 90mm travel 29er carbon FS frameset, with Boost design
  • CCS RDO carbon construction, increases strength, reduces weight
  • Aluminum rocker links, Enduro max pivot bearings- Black Oxide
  • Specially tuned Fox Float DPS shock with Kashima coat for CVA/RKT 9 design
  • 120mm travel, 29er Fox Factory 34 FIT4 fork with EVOL canister, low-speed compression micro-adjust, infinite tuning option, 51mm offset
  • 1.5 tapered aluminum steerer, magnesium crown and fork lowers, 110mm thru-axle
  • Niner Integrated SHIS headset IS42/28.6 | IS52/40
  • NoTubes Arch S1 Boost wheels, with NEO 15/110 front and 12/148mm XD driver rear hubs
  • Maxxis Rekon 3C/EXO/TR 2.4" WT front tire and Rekon Race 2C/EXO/TR 2.25" rear
  • Eagle X01 DUB crank, 32T, 175mm, 10-50 Eagle XG cassette, shifter, Matchmaker clamp, chain
  • DUB PF bottom bracket. spaced for Boost chainline
  • SRAM Guide RSC Hydraulic disc brakeset w/ 6-bolt rotors 180 FT, 160 RR
  • Niner RDO carbon 30.9mm x 370mm seatpost, Zero offset
  • Niner Custom TR saddle, carbon/ti rails
  • Niner RDO Alloy stem +/-6, RDO Flat Top Carbon 780mm bar
  • Niner Lock-on Grrrips- Black
  • Sizes: Medium, Large, XL
  • Color: Carbon/Green
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