Velopedia Bicycle Archive

2026 Trek Roscoe Gen 4 Frameset

Original specifications: M - 2.25 kg / 4.97 lbs (excluding bag) published weight · geometry for 5 published sizes.

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At a glance

Model year: 2026
Category: Mountain
Original MSRP: $699.99
Sizes: S (27.5" wheel), M (29" wheel), ML (29" wheel), L (29" wheel), XL (29" wheel)
Colors: Lava
Weight: M - 2.25 kg / 4.97 lbs (excluding bag)
Geometry: 5 manufacturer sizes
In this record: 3 specifications · archived image · original MSRP · geometry
Archive ID: 900000748

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Original buildAluminum

Manufacturer catalog

Published sizes and colors

5 sizes · 1 color

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

Published sizes

S (27.5" wheel)M (29" wheel)ML (29" wheel)L (29" wheel)XL (29" wheel)

Published colors

Lava

Frameset

Frame Construction	Alpha Platinum Aluminum, tapered head tube, ZS headset, internal derailleur & dropper post routing, ISCG 05, threaded BB, UDH, 148x12mm thru axle
Frame Material	Aluminum

Cockpit & Contact Points

Headset	FSA Orbit, sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom, 1.5 crown

Geometry

5 sizes · 16 measurements

Frame measurements by size.

Measurement	15.5" (S)	17.5" (M)	18.5" (ML)	19.5" (L)	21.5" (XL)
Seat tube	330 mm	375 mm	400 mm	425 mm	450 mm
Effective top tube	575 mm	611 mm	614 mm	632 mm	655 mm
Head tube	90 mm	100 mm	105 mm	120 mm	145 mm
Head-tube angle	65°	65°	65°	65°	65°
Seat-tube angle	75°	75°	76°	76°	77°
Actual seat-tube angle	73.1°	73.1°	74.1°	74.1°	75.1°
Chainstay / rear center	425 mm	430 mm	430 mm	430 mm	430 mm
Wheelbase	1139 mm	1186 mm	1203 mm	1224 mm	1265 mm
Bottom-bracket drop	45 mm	61 mm	61 mm	61 mm	61 mm
Bottom-bracket height	311 mm	312 mm	312 mm	312 mm	312 mm
Reach	415 mm	440 mm	455 mm	470 mm	500 mm
Stack	604 mm	644 mm	648 mm	662 mm	684 mm
Standover height	714 mm	735 mm	740 mm	740 mm	740 mm
Fork offset / rake	37 mm	44 mm	44 mm	44 mm	44 mm
Trail	125 mm	125 mm	125 mm	125 mm	125 mm
Wheel size	27.5"	29"	29"	29"	29"

Measurements may vary by configuration, wheel size, or frame setting where noted in the published chart.

Parts & serviceability

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Original specifications

Headset · Original

FSA Orbit, sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom, 1.5 crown

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