Velopedia Bicycle Archive

2025 Marin San Quentin 3 Frame Kit

Frame specifications: geometry for 4 published sizes.

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At a glance

Archive #900000514

Model year: 2025
Category: Mountain
Original MSRP: $629.00
Sizes: S, M, L, XL
Colors: Purple Fade
Geometry: 4 manufacturer sizes
In this record: 4 specifications · archived image · original MSRP · geometry

Frame specificationsAluminum · 27.5; 29

Manufacturer catalog

Published sizes and colors

4 sizes · 1 color

Manufacturer-published sizes and colors; availability and exact size/color pairings may vary by market or production run.

Published sizes

SMLXL

Published colors

Purple Fade

Frameset

Frame Construction	Series 3 6061 Aluminum, Double Butted, Internal Cable Routing, 12x148mm Thru-Axle, 73mm Threaded BB
Frame Material	Aluminum

Drivetrain

BB Shell Width	73 mm

Wheels & Tires

Wheel Size	27.5; 29

Geometry

4 sizes · 16 measurements

Frame measurements by size.

All geometry measurements4 sizes · 16 measurements

Measurement	S	M	L	XL
Seat tube	310 mm	340 mm	410 mm	420 mm
Effective top tube	565.9 mm	594.9 mm	620.77 mm	651.81 mm
Head tube	110 mm	115 mm	125 mm	130 mm
Head-tube angle	64°	64°	64°	64°
Seat-tube angle	77°	77°	77°	77°
Chainstay / rear center	425 mm	425 mm	430 mm	430 mm
Wheelbase	1176 mm	1206.2 mm	1232 mm	1264.57 mm
Bottom-bracket drop	50 mm	50 mm	50 mm	50 mm
Bottom-bracket height	316 mm	316 mm	327 mm	327 mm
Reach	422 mm	450 mm	470 mm	500 mm
Stack	623.4 mm	627.9 mm	653.05 mm	657.54 mm
Standover height	628.1 mm	657 mm	688 mm	695 mm
Fork offset / rake	47 mm	47 mm	47 mm	47 mm
Crank length	170 mm	170 mm	170 mm	170 mm
Stem length	45 mm	45 mm	45 mm	45 mm
Handlebar width	780 mm	780 mm	780 mm	780 mm

Dimensions as recorded.

Frame standardsQuick reference before buying parts

Recorded interfaces. Confirm the frame and included hardware before ordering parts.

Bottom bracket / shell: 73 mm

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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.