Velopedia Bicycle Archive

Ritchey Outback TandM Frameset

Tandem bicycle from the Velopedia specification archive.

Model year: Not published by manufacturer
Original MSRP: $4,399.00
Sizes: M; L
Colors: Merlot, Creme; Indigo
Weight: Frame weight: 5,020g (3 sections of frame assembled in one piece); Fork weight: 1070g (uncut steerer)
Geometry: 2 manufacturer sizes
Archive ID: 900000534
Catalog verified: August 13, 2026

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Frameset

Frame Construction	heat-treated, triple-butted Ritchey Logic steel tubing - TIG welded
Frame Material	Steel
Fork	heat-treated, triple-butted Ritchey Logic steel tubing - TIG welded
Fork Material	Steel

Drivetrain

Bottom Bracket	68mm - English threaded

Brakes

Brakes	IS51 brake mounts / 203 max rotor size (adaptors available separately); Housing stops on down tube optimized for mechanical brake coupling; Hydraulic brake compatible (please see brake manufacturer recommendation for traveling with hydraulic brakes)

Cockpit & Contact Points

Headset	WCS headset included (upper IS42/28.6 - 16mm stack height \| lower IS42/30)

Wheels & Tires

Wheel Size	700C

Size-specific frame data

Geometry

2 sizes · 16 measurements

Manufacturer-published geometry normalized for consistent archival comparison. Effective top tube and reach remain separate measurements because they describe different aspects of fit.

Measurement	M	L
Seat tube	527 mm	570 mm
Effective top tube	557 mm	590 mm
Top tube	543 mm	576 mm
Head tube	150 mm	175 mm
Head-tube angle	71.5°	71.5°
Seat-tube angle	73.5°	73.5°
Chainstay / rear center	435 mm	435 mm
Wheelbase	1760 mm	1791 mm
Bottom-bracket drop	70 mm	70 mm
Reach	386 mm	411 mm
Stack	578 mm	597 mm
Standover height	802 mm	822 mm
Fork offset / rake	47 mm	47 mm
Front center	609 mm	641 mm
Trail	71 mm	71 mm
Fork length / axle-to-crown	401 mm	401 mm

Geometry source: Ritchey embedded first-party geometry matrix ↗ Measurements can vary by configuration, wheel size, or flip-chip position where noted by the manufacturer.