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outback best steel gravel bike
outback best steel gravel bike
outback best steel gravel bike
outback best steel gravel bike
outback best steel gravel bike
outback best steel gravel bike
outback best steel gravel bike
outback best steel gravel bike
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NEW

Outback Frameset

Color
Size

Description

Tom Ritchey rides about 10,000 miles (16,000 km) per year, mostly off-road. Combine that with more than 50 years of crafting bicycles, and it’s no wonder that the Outback is an icon in the gritty world of gravel and adventure cycling.

Standout features for this edition of the 2025 Outback include internal routing for a dropper post, a rack mount on the fork crown, and internal dynamo routing. Aurora and Winter Sage colorways offer riders more options to style their ride beyond the bike’s existing practical and adaptable features, but the “big” news is, this Outback also comes in size XXL.

Bikepacking, road and off-road, you name it…the Ritchey Outback is designed to do it all.

Tech Specs

Frame
Materialheat-treated, triple-butted Ritchey Logic steel tubing - TIG welded
Ultra-light forged and machined straight 1-1/8" headtube
Electrophoretic Deposition (ED Coat) treated for corrosion resistance
Seat tube clamp size28.6mm (2.5Nm max for derailleur clamps and chain guides)
27.2mm seat tube with integrated seat collar (max torque setting: 6Nm)
Bottom bracket68mm - English threaded
142mm spacing (12mm alloy thru-axle included)
Crankset min/max ring size - single36 to 46t / double: 46/30t to 50/34t 
Can accommodate 1X or 2X chainrings
Chainline49mm
Not compatible with Direct Mount standard and related components (T-Type derailleurs and cassettes)
Bottle cage mounts
Rack and fender mounts
Stealth wire routing for semi-wireless Di2 groupsets
DSP internal (seat tube only) routing available
External cable routing
WCS headset included (upper IS42/28.6 - 16mm stack height | lower IS42/30)
Replaceable stainless-steel derailleur hanger
Fork
New Ritchey Carbon Adventure Fork with multi-purpose, rack and fender mounts
1-1/8" straight steerer with integrated 45-degree crown race 
Steerer length300mm
Fork length390mm
Axle-crown393mm
Rake/Offset50mm
100mm spacing (12mm alloy thru-axle included)
Fork max payload3kg per side
30mm maximum spacers below stem
Tire Compatibility
Wheel and tire compatibility700 x 48mm or 650 x 2.0in (depending on tire/rim manufacturer)
Frame spacing58mm
Fork spacing60mm 
Brake Compatibility
Flat-mount brakes front and rear140mm (160mm max - adaptors available separately)
Frame flat-mount bracket height10mm 
Details
SizesXS / S / M / L / XL / XXL
Frame weight2,175g (size L - w/o thru-axle)
Fork weight445g (with uncut steerer / not including axle)
ColorAurora & Winter Sage

Logic Features

WCS Logic Tubing

WCS Logic Tubing

Ritchey's proprietary and triple-butted steel tubing developed specifically for the TIG welding process to Tom's specifications.

Multipurpose Mounts

Multipurpose Mounts

Triple mounts on each fork leg offer the ability to carry...well, anything!

Integrated Carbon crown

Integrated Carbon Crown

Sleek integration with Ritchey headsets and the added benefit of reducing stress at the steerer crown interface.

Best Gravel Bikes of 2020! - Most Supple Bike of the YEAR AWARD!

Geometry

  • Design
  • Design
Frame Size
XS
S
M
L
XL
XXL
A
Top tube (effective)
526
541
557
570
581
595
B
Top tube (actual)
510
524
539
552
563
575
C
Seat tube (c-t)
440
465
490
515
540
555
D
Seat tube angle
74°
73.5°
73°
73°
73°
73°
E
Head tube length
115
130
150
170
190
220
F
Head tube angle
69.5°
70°
70.5°
71°
71°
71.5°
G
BB drop
70
70
68
68
68
68
H
Chainstay
453
453
453
453
453
453
I
Wheelbase
1047
1053
1060
1070
1081
1091
J
Standover height
754
773
796
818
839
862
K
Stack
532
548
567
587
606
637
L
Reach
373
378
383
390
395
400
M
Fork rake
50
50
50
50
50
50
N
Axle to crown
393
393
393
393
393
393
Post diameter
27.2
27.2
27.2
27.2
27.2
27.2

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