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NinerWFO 9
WFO RDO 4-Star Mountain Bike


Item # NNR99BT

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Item # NNR99BT

Why We Like The WFO RDO 4-Star Mountain Bike

The WFO 9 makes its way back into Niner's lineup with a whopping 170mm of rear travel and 180mm up front, making this the longest-travel steed to come out of the Colorado-based firm. Driven by the innovative CVA link design, the WFO pedals impressively well for a bike of this caliber, and when we point it downhill, there's absolutely nothing we can't monster-truck over. Built with a durable carbon frame, a FOX factory fork and shock, and Shimano's revered XT 12-speed group, we love everything about this bike and the confidence it brings to steep, rowdy trails.

Geometry on the Niner WFO 9 is built like we would expect an enduro slaying machine to be. The frame incorporates standard boost spacing, meaning it's easy to find replacement parts for our wheels, cranks, and hubs. Big 29in wheels are paired with a slacked-out 64-degree head-tube angle in the low setting, ideal for getting over big trail obstacles in our way. For its class, the steep 77-degree seat-tube angle means we're not afraid of pointing the WFO 9 up some big fire road climbs. A 1205mm wheelbase brings a lot of stability to the game, meaning we can confidently sign-up for our first enduro knowing the bike won't be holding us back.

This 4-star build is absolutely race-ready and provides an excellent base to start our emerging enduro careers on, or just give us a confident platform for all sorts of riding. Niner finishes off the build with a variety of in-house parts designed to hold up to the toughest trails and gnarliest riding we can find. Aggressive geometry speaks to the bike's ability on the descents while CVA suspension lets us take on the fire roads without concern.

*Due to unprecedented demand in the global supply chain and the bike industry over the last 18 months, material weight and exact components are subject to change. We are working diligently to keep tech specs updated, and any adjustments will be minor. If you have any questions, reach out to a Gearhead by chatting online or calling 1-888-276-7130.

  • A long-travel enduro bike that leaves nothing on the table
  • RDO carbon frame offers impressive stiffness and handling
  • CVA suspension provides great traction and pedaling efficiency
  • Top-of-the-line FOX Factory fork and shock
  • Shimano XT 12-speed shifts like a dream
  • 4-piston brakes and 203mm rotors keep our speed in check
  • Maxxis rubber brings utmost confidence in loose terrain

Tech Specs
Frame MaterialRDO carbon
Rear ShockFOX Float X2 Factory
Rear Travel170mm
ForkFOX 38 Float Factory GRIP2, 44mm offset
Front Travel180mm
HeadsetNiner Internal ZS44/ZS56
ShiftersShimano XT M8100
Rear DerailleurShimano XT M8100
CranksetShimano XT M8100
Chainring Sizes32t
Crank Arm Length170mm
Bottom BracketRace Face BSA threaded
CassetteShimano XT M8100
Cassette Range10 - 51t
ChainShimano XT M8100
BrakesetShimano XT M8120
Brake Type4-piston hydraulic
RotorsShimano MT800
Rotor Size203mm
HandlebarRace Face NEXT R 35
Handlebar Rise35mm
Handlebar Width800mm
GripsNiner Grrrips, soft compound
StemRace Face Turbine R 35
Stem Length40mm
SaddleNiner Custom TR, Crn-Ti rails
SeatpostKS Lev SI
Seatpost Length[x-small, small] 100mm, [medium, large, x-large] 150mm
WheelsetDT Swiss EX 1700 Spline, 30mm
HubsDT Swiss Spline, Centerlock
Front Axle15 x 110mm Boost
Rear Axle12 x 148mm Boost
Tire Clearance29 x 2.6in
Tires[front] Schwalbe Magic Mary EVO Super Trail TLE Addix Soft, [rear] Schwalbe Hans Dampf EVO Super Trail TLE Addix Soft
Tire Size29 x 2.6in
Pedalsnot included
Extrasdowntube protector, chainstay protector
Manufacturer Warranty[frame] lifetime

Actual Weight


Actual weights are measured in-house by the Competitive Cyclist team.

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