Niner 2021 RLT 9 Frameset (Forge Grey/Skye Blue) (47cm)

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Price: $1,100.00


  • 47cm
  • 50cm
  • 53cm
  • 56cm
  • 59cm
  • 62cm
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The RLT 9 Aluminum Frameset lets you ride beyond the city limits, without going beyond your budget. Whether it's on pavement or gravel road, this frameset craves long adventures. With plenty of room for all your gear, spec it out to your personal preferences and hit the roads with the RLT 9 Aluminum. 

The 6061 aluminum RLT9 is welded with hydroformed aluminum tubing. This material is universally praised for affordability and versatility. Before welding, Niner carefully shapes the tubing to optimize strength, durability, stiffness, all the while keeping it as lightweight as possible. The 2021 version features a forged chainstay yoke to improve tire clearance and stiffness.

The RDO carbon fork is sure to offer a supple ride, regardless of duration. The brake hose is routed internally through a fully sleeved guide tube. Multiple rack, fender, and cargo mounts make light work of heavy loads. The 12x100mm thru-axle and flat mount disc brake attachments are compatible with contemporary components. The 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.


  • Niner 6061 Aluminum frame; internal cable routing, versatile, elegant, lightweight.
  • RDO carbon fork; light, stiff, and optimized for compliance over rough roads
  • Fireroad Geometry; featuring longer chainstay, lower bottom bracket height, and slacker headtube angle 
  • Interchangeable Wheel Size; with more room than ever before, to fit up to 700 x 50c tires (or 650b x 2.0) 
  • Integrated bottle, bag, rack and fender mounts
  • 12mm thru axles

Frame: Niner hydroformed and welded Aluminum    
Fork: Carbon 
Fork rake: 45mm 
Color: Forge Grey/Skye Blue 
Available frame sizes: 47cm, 50cm, 53cm, 56cm, 59cm, 62cm 
Frame mounts and fittings: 2 inner triangle bottle mounts, rack and fender mounts 
Seat collar size: 31.8mm 
Seat post size: 27.2mm 
Max Rear rotor size: 160mm 
Rear wheel thru axle specifications: M12 x 1.75P x 174L 
Front wheel thru axle specifications: M12 x 1.5P x 125L 
Cable routing: Internal, Di2 compatible    
Headset size: 1.125" x 1.5" tapered integrated (campy style) headset included (Cane Creek description: IS42/28.6 IS52/40) 
Chainring compatibility: standard 1x, 2x, and 3x systems 
Q-Factor: 168mm 
Bottom Bracket type: 68mm PF30 BB Shell (adaptors required for BSA Type BBS) 
Brake mount type: Flat mount (30mm rear) 
Rear wheel spacing: 12 x 142mm 
Front wheel spacing: 12 x 100mm thru axle 
Max tire size: 700 x 50c or 650b x 2.0

This product was added to our catalog on December 29, 2020

Thursday, Jan 28 2021 (about a year ago)
Niner 2021 RLT 9 Frameset (Forge Grey/Skye Blue) (47cm)
I bought one of these from another mail order company.
Frame failed after 30mi. I rode over a double water bar a little heavy on the front end . Kept riding. Took a break looked down and my frame was bent . Top tube and down tube. Niner will replace it for a price which is pretty unfair. But there is a definite problem with this frame as I talked to someone else who had the same thing happen. He bought the replacement frame and put it up for sale.
Still nothing definite from Jenson USA either. It’s been 6 months.
Please don’t wast your time or money on this bike.

Sizing Recommendations for Riders Who Fall Between Sizes:

  • Sizing down will provide a more maneuverable ride while sizing up will provide more stability
Rider Height (Feet)Rider Height (Meters)
47cm4'11" - 5'3"1.5 - 1.6m
50cm5'2" - 5'6"1.57 - 1.68m
53cm5'5" - 5'9"1.65 - 1.75m
56cm5'8" - 6'1.73 - 1.83m
59cm5'11" - 6'3"1.8 - 1.91m
62cm6'2" - 6'6"1.88 - 1.98m

Note: All sizing recommendations are provided by the manufacturer and may differ for each rider.


(A) Top Tube Length510mm525mm545mm565mm585mm605mm
(B) Seat Tube Length430mm460mm490mm520mm550mm580mm
(C) Chainstay Length Actual435mm435mm435mm435mm435mm435mm
(D) Horizontal Chainstay430mm430mm430mm430mm430mm430mm
(E) Front Center582mm589mm599mm610mm625mm634mm
(F) Wheelbase1005mm1012mm1023mm1036mm1051mm1060mm
(G) Bottom Bracket Drop75mm75mm75mm70mm70mm70mm
(H) Headtube Length105mm125mm145mm165mm185mm205mm
(I) Headtube Angle70.0°70.5°71.0°71.5°72.0°72.5°
(J) Seat Tube Angle74.5°74.0°73.5°73.0°73.0°72.5°
(K) Stand Over Height705mm728mm753mm780mm805mm830mm
(L) Reach361mm365mm374mm383mm397mm407mm
(M) Stack537mm558mm578mm594mm615mm636mm
(N) Fork Rake45°45°45°45°45°45°
(A) Top Tube Length20.1"20.7"21.5"22.2"23.0"23.8"
(B) Seat Tube Length16.9"18.1"19.3"20.5"21.7"22.8"
(C) Chainstay Length Actual17.1"17.1"17.1"17.1"17.1"17.1"
(D) Horizontal Chainstay16.9"16.9"16.9"16.9"16.9"16.9"
(E) Front Center22.9"23.2"23.6"24.0"24.6"25.0"
(F) Wheelbase39.7"39.8"40.3"40.8"41.4"41.7"
(G) Bottom Bracket Drop3.0"3.0"3.0"2.8"2.8"2.8"
(H) Headtube Length4.1"4.9"5.7"6.5"7.3"8.1"
(I) Headtube Angle70.0°70.5°71.0°71.5°72.0°72.5°
(J) Seat Tube Angle74.5°74.0°73.5°73.0°73.0°72.5°
(K) Stand Over Height27.8"28.7"29.6"30.7"31.7"32.7"
(L) Reach14.2"14.4"14.7"15.1"15.6"16.0"
(M) Stack21.1"22.0"22.8"23.4"24.2"25.0"
(N) Fork Rake45°45°45°45°45°45°