Take Up To 40% Off: Shop Cyber Weekend
This carousel displays a list of buttons that updates the main product image when a button is clicked
  • Options
  • Detail Images

NinerRLT 9
4-Star GRX 2x Gravel Bike


Item # NNR99B1

Find your size


Note: Actual inseam is not the same as pant inseam.

Recommended Size

Based on the measurements you entered, this is the size we recommend in this bike.

Our size calculator is a starting point for finding the right size for you. To get personal advice talk to one of our fit experts at 1.888.276.7130 or chat now

Select options
  • Cancel
  • Select options
  • Forge Grey/Skye Blue, 59cm ($3,500.00)
  • 100% Guaranteed Returns
Item # NNR99B1

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

Tech Specs
Frame MaterialNiner hydroformed 6061 aluminum
ForkNiner RDO full carbon
HeadsetNiner integrated IS42/28.6|IS52/40
Shifters[front] Shimano GRX800 2x, [rear] Shimano GRX800 11-speed
Front DerailleurShimano Ultegra R8000
Rear DerailleurShimano GRX800 GS 11-speed Shadow Plus
CranksetEaston EC90 carbon
Chainring Sizes47/32t
Crank Arm Length[47cm, 50cm] 170mm, [53cm, 56cm] 172.5, [59cm, 61cm] 175mm
Bottom BracketEaston PF30
CassetteShimano Ultegra HG800 11-speed
Cassette Range11-34t
ChainShimano HG 601 11-speed
BrakesetShimano GRX
Brake Typecenterlock disc
RotorsShimano RT800 160mm
HandlebarEaston EA50 AX
Handlebar Drop120mm
Handlebar Width[47cm, 50cm] 420mm, [53cm, 56cm] 440mm, [59cm, 61cm] 460mm
Bar TapeNiner bar tape
StemNiner RDO carbon
Stem Length[47cm, 50cm] 80mm, [53cm, 56cm] 90mm, [59cm, 61cm] 100mm
SaddleNiner custom with TI rails
SeatpostNiner RDO carbon (400mm)
WheelsetDT Swiss G 1800 Spline 25
HubsDT Swiss 370
Front Axle12 x 100mm thru-axle
Rear Axle12 x 142mm thru-axle
TiresSchwalbe G-One Allround Evo Super Terrain
Tire Size700c x 45mm
Pedalsnot included
Manufacturer Warranty5 years

For screen reader users: each row header contains a button that can be toggled to provide additional information.

Find your size

Actual Weight


Claimed Weight

Claimed weights are provided by the vendor.

Have questions? Chat with a Gearhead


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

Have questions? Chat with a Gearhead

What do you think about this product?