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RLT 9 4-Star GRX 2x Gravel Bike

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Color:Forge Grey/Skye Blue


GeometryFind your size


Why We Like The RLT 9 4-Star GRX 2x Gravel Bike

Time and time again, we turn to Niner for times when we want to get off the pavement and on to crunchy gravel. Be it endless days of riding and camping or a Sunday excursion on your favorite well-worn gravel trail, we like to count on smooth-rolling comfort, reliable shifting, and braking in all conditions. For our longest trips, we like a lightweight bike that offers ample room for our gear bags. With Niner, the clear option for the kind of riding we're looking for is a bike like the RLT 9 4-Star GRX 2x Gravel Bike. Niner gave updated RLT line thru-axles and a new fork, which increases lightness and stiffness for a smoother ride over choppy surfaces.

The RLT 9 4-Star GRX 2x Gravel Bike is constructed with an aluminum frame, welded with hydroformed aluminum tubing for versatility at a price that doesn't break the bank. A new forged chainstay yoke improves tire clearance and stiffness, and riders can accommodate wider rubber if they want to switch it up. Riders can even add on a dropper post if they want to get really crazy. RLT 9 gravel bikes have longer chainstays, lower bottom bracket heights, and slacker headtube angles for a more comfortable ride when we're going the distance. The updated RLT 9 line blends the boundaries between road and off-road riding to create the ideal all-rounder for everything from triple-digit-mile days to quick sprints up the canyon.


  • A versatile bikepacking and canyon riding gravel machine
  • Aluminum construction that's lightweight, cost-effective, and durable
  • RDO carbon fiber fork for improved compliance over rough surfaces
  • Internal wire routing to keep things tidy
  • Tire clearance that can take on wider rubber
  • Integrated frame mounts for bags, bottles, racks, and fenders
  • Fireroad geometry ensures comfort on long rides
  • Item #NNR99B1
Frame Material
Niner hydroformed 6061 aluminum
Niner RDO full carbon
Niner integrated IS42/28.6|IS52/40
[front] Shimano GRX800 2x, [rear] Shimano GRX800 11-speed
Front Derailleur
Shimano Ultegra R8000
Rear Derailleur
Shimano GRX800 GS 11-speed Shadow Plus
Easton EC90 carbon
Chainring Sizes
Crank Arm Length
[47cm, 50cm] 170mm, [53cm, 56cm] 172.5, [59cm, 61cm] 175mm
Bottom Bracket
Easton PF30
Shimano Ultegra HG800 11-speed
Cassette Range
Shimano HG 601 11-speed
Shimano GRX
Brake Type
centerlock disc
Shimano RT800 160mm
Easton EA50 AX
Handlebar Drop
Handlebar Width
[47cm, 50cm] 420mm, [53cm, 56cm] 440mm, [59cm, 61cm] 460mm
Bar Tape
Niner bar tape
Niner RDO carbon
Stem Length
[47cm, 50cm] 80mm, [53cm, 56cm] 90mm, [59cm, 61cm] 100mm
Niner custom with TI rails
Niner RDO carbon (400mm)
DT Swiss G 1800 Spline 25
DT Swiss 370
Front Axle
12 x 100mm thru-axle
Rear Axle
12 x 142mm thru-axle
Schwalbe G-One Allround Evo Super Terrain
Tire Size
700c x 45mm
not included
Claimed Weight
21.8lb (9875g)
Manufacturer Warranty
5 years