2023 Niner RLT 9 Steel

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45.00 LBS
58.00 (in)
10.00 (in)
32.00 (in)
Current Stock:
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Steel is truly real

The RLT 9 Steel is for the purist, the rider who's after the classic aesthetics of smooth, supple steel. Whether it's on pavement or gravel road, this bike craves long adventures. With plenty of room for all your gear, the only thing stopping you from your next ride is your imagination. Go ahead, take the ride of your dreams with the RLT 9 Steel.

Reynolds 853 steel

Our love affair with air hardened Reynolds 853 steel started early. From early flirting with the ROS 9, to the first SIR 9, to our current RLT 9 steel, we've crushed on ferrous frames for over 15 years.

Why does Niner steel still feel so real?

In practical terms, Reynolds 853 is a nearly perfect material for creating bike frames. Rather than being weakened by heat, the frame tube junctions actually strengthen after TIG welding. This allows the use of thinner, lighter frame tubes without any sacrifice in durability or strength.

Additionally, steel framed bicycles have a well earned reputation for rugged, dependable reliability. Steel has a way of brushing off the inevitable scratches, dings, and rough treatment that accompanies the best adventures. No matter if you have a cross continent excursion or a county line commute, the RLT 9 steel loves to be loaded up and rolled out.

Steel frame, RDO carbon fork

The RLT 9 Steel features our all new RDO carbon fiber fork. The combination of steel frame and carbon fork is sure to offer a supple ride, regardless of duration. This beautifully designed fork is composed of famous Race Day Optimized carbon fiber, which is built with a unique process that optimizes complete compaction of the carbon layers under heat and pressure. By maximizing the carbon to resin ratio in the finished product, we keep this fork light and stiff while improving compliance over rough surfaces.

We paid mind to aesthetics and functionality in this fork. The brake hose is routed internally through a fully sleeved guide tube. Multiple rack, fender, and cargo mounts make light work of heavy loads, so go ahead, add another day of bikepacking on to your trip. The 12x100mm thru axle and flat mount disc brake attachments are compatible with contemporary components. If you find yourself wanting to push the limits on a long haul self supported ride, we've got you covered. The new fork features internal wire routing and fitment for a hub dynamo powered light, so the only thing keeping you from riding into the night is your bedtime.

Tire size compatibility for any adventure

Get ready to swoon. With more tire clearance than ever before, the RLT 9 Steel can accommodate tires as wide as 700x50c. Does your next ride require more rubber on the road? Not to worry, swapping out wheels is easy. This bike can accommodate 650b wheels and fit tires as wide as 2.0. Go wild with wheel and tire combinations, just keep it rubber side down out there.

Frame features fit for going farther

Are you a steel connoisseur, an adventure addict, weekend bikepacker, gear hoarder, over packer, grocery-getter or commuter extraordinaire? If you answered yes to any of these, the RLT 9 Steel was made for you. This dream build has 26 mounting points that give you the option to outfit your bike with as many bags, bottles, and racks as you need. You can haul anything from a love letter to your hockey team’s uniforms...

Moving on- We’ve also designed custom bags for each frame size that mount directly to the frame. No more straps or buckles flying around. Just a cleanly designed frame ready for the next journey.

Cleanliness is next to godliness. Our internal cable routing keeps the frame looking tidy. Want an even sleeker bike? Single-speed calling your name? With our PF30 bottom bracket shell, it’s easy to fit a geared or single-speed drivetrain. More gears your thing? This bike is compatible with either mechanical or electronic shifting. Plan on getting rowdy on your ride? Throw a dropper post on, for safety.


  • Room to roam

    Niner RLT gravel bikes have room to fit 700x50c tires (or 650b x 2.0).

  • Fireroad Geometry

    Whether you're riding across town or across the country, the RLT 9 Steel has a longer chainstay, a lower bottom bracket height and a slacker headtube angle to keep you comfortable.

  • Interchangeable wheel size

    Don't let the terrain stop you from riding. The Niner RLT 9 Steel can fit both 700c and 650b wheels, for ultimate versatility and adaptability to suit any off road pursuit.

  • Biocentric Bottom Bracket

    Fit any drivetrain, geared or singlespeed. No bolt-on hubs, no chain tensioners cluttering your ride, no brake adjustments with gear changes.

  • Lifetime warranty

    We have you covered with warranty service, small parts, and a support team that actually answers the phone. So go ahead, search out a gravel road you've always wanted to explore.

  • Niner RDO carbon fork

    Internal cable routing, so no more fishing for wires. Custom 12x100mm gravel-tuned RDO carbon fork with rack, fender and bottle mounts, plus internal cable and dynamo routing, perfect for those long hauls.


Click for 5 STAR SRAM FORCE AXS 1x LTD Specification

Click for 5-STAR SHIMANO GRX 800 2X Specification

Click for 5-STAR SHIMANO GRX 800 1X Specification

Click for 4-STAR SHIMANO GRX 800 2X Specification

Click for 4-STAR SHIMANO GRX 800 1X Specification

Click for 3-STAR SRAM RIVAL 1 Specification

Click for 2-STAR SRAM APEX 1 Specification

Click for Frame Only Specification

Geometry Size

Click for 2023 RLT 9 STEEL Geometry Details

frame mounts and fittings:
2 Inner Triangle Bottle Mounts | 1 Mount Under Down Tube | 1 on top tube | rack and fender mounts.
Rear suspension travel:
Maximum front suspension:
Fork rake:
Shock size:
Shock mounting hardware:
Suggested shock sag:
Seatpost size:
Seat collar size:
Cable routing:
internal | Di2 compatible
Headset size:
Pivot bearing specs:
Chainring compatibility:
Compatible With Standard 1X | 2X And 3X Systems
Maximum chainring size:
Q Factor:
ISCG compatibility:
Bottom bracket type:
Biocentric 30 compatibility:
Brake mount type:
flat mount (30mm rear)
Maximum rear rotor size:
Rear wheel spacing:
Rear wheel through axle spec:
M12 x 1.75P x 174L
Front wheel axle spacing:
12x 100mm thru axle
Front wheel through axle spec:
M12 x 1.5P x 125L
Max tire size:
700x50c or 650B x 2.0