Ritchey OUTBACK V4 DISC Gravel Cross Adventure Frameset 2025 Aurora

Tom Ritchey rides approximately 16,000 km (10,000 miles) per year, mostly off-road. Combined with over 50 years of bike-building experience, it's no wonder the Outback is an icon in the rugged world of gravel and adventure cycling.

The standout features of the 2025 edition of the Outback include internal routing for a dropper post, a rack mount on the fork crown, and internal wiring for a hub dynamo. The Aurora and Winter Sage color variants offer riders more options to customize their bike—beyond its already practical and versatile features. But the "big" news is: The Outback is now also available in size XXL.

Bikepacking, road, or off-road—it doesn't matter. The Ritchey Outback is built to handle it all.

Frame

• Material: heat-treated, triple-butted Ritchey Logic steel tubing – TIG-welded
• Head tube: ultralight, forged and machined, straight 1 1/8" head tube
• Corrosion protection: Electrophoretic coating (ED Coat)
• Seat tube clamp: 28.6 mm (max. 2.5 Nm for derailleur clamps and chain guides)
• Seat tube: 27.2 mm with integrated seat clamp closure (max. torque: 6 Nm)
• Bottom bracket: 68 mm, BSA (English thread)
• Rear triangle: 142 mm installation width (12 mm aluminum thru axle included)
• Crankset:
  • Min./Max. Chainring Size – Single: 36 to 46 teeth
  • Double: 46/30T to 50/34T
  • Compatible with single or double chainrings
• Chainline: 49 mm
• Not compatible with: Direct Mount standard and associated components (T-Type derailleurs and cassettes)
• Bottle holder mounts: 3
• Luggage rack and mudguard mounts
• Concealed cable routing for semi-wireless Di2 groupsets
• Internal DSP wiring (seat tube only) possible
• External cable routing
• WCS tax rate included:
  • Top: IS42/28.6 – 16 mm stack height
  • Below: IS42/30
• Replaceable stainless steel derailleur hanger

Fork

• Model: New Ritchey Carbon Adventure fork with multi-mounts for racks and fenders
• Steerer tube: 1 1/8" straight with integrated 45° crown race ring
• Shaft length: 300 mm
• Total length: 390 mm
• Axle-crown dimension: 393 mm
• Offset: 50 mm
• Installation width: 100 mm (12 mm aluminum thru axle included)
• Max. load: 3 kg per side
• Max. spacer under stem: 30 mm

Tire compatibility

• Wheel/tire dimensions: 700 x 48 mm or 650 x 2.0 inches (depending on the tire/rim manufacturer)
• Frame clearance: 58 mm
• Fork clearance: 60 mm

Brake compatibility

• Flat-mount disc brakes front and rear: 140 mm (160 mm max. – adapters sold separately)
• Flat mount bracket height frame: 10 mm

Further details

• Frame sizes: XS / S / M / L / XL / XXL
• Frame weight: 2,175 g (size L, without thru axle)
• Fork weight: 445 g (with uncut steerer tube, without axle)
• Colors: Aurora & Winter Sage