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RLT 9 Steel 4-Star GRX 1x Gravel Bike

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Why We Like The Niner RLT 9 Steel 4-Star GRX 1x Gravel Bike

The Niner RLT 9 Steel 4-Star GRX 1x Gravel Bike brings fast, controlled fun to our off-road exploration. Whether short rides down the unpaved park trail or a cross-country bikepacking trip, the Reynolds 853 steel frame provides a reliable build that we know will keep up with our epic adventures. For a supple ride, Niner combines the lightweight steel frame with the functional RDO carbon fiber fork, which is also designed to absorb shocks to keep us riding comfortably.

The RLT 9 Steel 4-Star is spec'd with GRX 800 components, including the 1x 40T chainring, which pairs with the Shimano XT M8000 11-speed cassette for an excellent amount of gearing for any terrain. The GRX 800 disc brake system provides a quick, effortless stop when something jumps in our way, while the DT Swiss wheelset keeps us rolling fast and efficiently.


  • A steel gravel grinder for all-day comfort and control
  • Features a Reynolds 853 steel frame with an RDO carbon fiber fork
  • Internally routed brake hose delivers a sleek, clean look
  • GRX 800 components offer simple and efficient shifting
  • 40T Easton carbon crankset pairs with an 11-speed cassette
  • RDO carbon seatpost and Niner custom saddle ensure seated comfort
  • DT Swiss G 1800 Spline 25 wheels offer long-lasting durability
  • Item #NNR99EK
Frame Material
Reynolds 853 steel
Niner RDO full carbon
Niner integrated SHIS description IS42/28.6|IS52/40
SHIMANO GRX800, 11-speed
Front Derailleur
Rear Derailleur
Shimano GRX800 GS, shadow plus, 11-speed
Easton EC90 carbon
Chainring Sizes
Crank Arm Length
[47cm, 50cm] 170mm, [53cm, 56cm] 172.5mm, [59cm, 62cm] 175mm
Bottom Bracket
Easton PF30
Shimano XT M8000, 11-speed
Cassette Range
Shimano HG 601, 11-speed
Shimano GRX800
Brake Type
flat mount disc
Shimano CL800 160/160mm CL
Easton EA50 AX
Handlebar Width
[47cm, 50cm] 420mm, [53cm, 56cm] 440mm, [59cm, 62cm] 460mm
Bar Tape
Niner bar tape
Niner RDO
Stem Length
[47cm , 50cm] 80mm, [53cm, 56cm] 90mm, [59cm, 62cm] 100mm
Niner custom with CRN-TI rails, embossed Niner graphic
Niner RDO carbon, 400mm
DT Swiss G 1800 Spline 25, centerlock
DT Swiss 370
Front Axle
12 x 100mm
Rear Axle
12 x 142mm
Tire Clearance
700 x 50 or 650b x 2.0
Schwalbe G-ONE Allround Evo Super Terrain, TLE, Addix Speedgrip
Tire Size
700 x 45c
not included
Claimed Weight
Manufacturer Warranty
5 years

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