Trek Roscoe Gen Frame
What the checker says2317will not fit22check before you buy764worth knowing
Run variant by variant through the mountain bike builder’s own engine. Every sentence below is the checker’s, unedited. Nothing here says this part fits your bike; it says what it does and does not fit among the parts we hold.
Checked against 5916 verified mountain bike parts in this catalog. 3126 produced no finding of any kind; that is Roscoe Gen 3 (2022). Roscoe Gen 4 (2026) clears 3049. Each variant produces 1114 to 1227 distinct errors and 13 to 15 distinct warnings.
Will not fit
- Will not fiterror · Rear WheelUnsupported wheel setup: Trek Roscoe Gen 3 supports 29", but this build is front (any) / rear 27.5". On 239 of the 607 verified rear wheels in this catalog. Applies to 1 of 2 variants.
- Will not fiterror · Rear WheelUnsupported wheel setup: Trek Roscoe Gen 4 supports 29", but this build is front (any) / rear 27.5". On 239 of the 607 verified rear wheels in this catalog. Applies to 1 of 2 variants.
- Will not fiterror · Front TireUnsupported wheel setup: Trek Roscoe Gen 3 supports 29", but this build is front 27.5" / rear (any). On 223 of the 617 verified tires in this catalog. Applies to 1 of 2 variants.
- Will not fiterror · Front TireUnsupported wheel setup: Trek Roscoe Gen 4 supports 29", but this build is front 27.5" / rear (any). On 223 of the 617 verified tires in this catalog. Applies to 1 of 2 variants.
- Will not fiterror · Rear TireUnsupported wheel setup: Trek Roscoe Gen 3 supports 29", but this build is front (any) / rear 27.5". On 223 of the 617 verified tires in this catalog. Applies to 1 of 2 variants.
- Will not fiterror · Rear TireUnsupported wheel setup: Trek Roscoe Gen 4 supports 29", but this build is front (any) / rear 27.5". On 223 of the 617 verified tires in this catalog. Applies to 1 of 2 variants.
- Will not fiterror · ForkUnsupported wheel setup: Trek Roscoe Gen 3 supports 29", but this build is front 27.5" / rear (any). On 157 of the 490 verified forks in this catalog. Applies to 1 of 2 variants.
- Will not fiterror · ForkUnsupported wheel setup: Trek Roscoe Gen 4 supports 29", but this build is front 27.5" / rear (any). On 157 of the 490 verified forks in this catalog. Applies to 1 of 2 variants.
Hardtail shock, Rear Shock. 2048 more findings from the same check, on up to 2 of the 1025 verified rear shocks each.
Bb shell, Bottom Bracket. 68 more findings from the same check, on up to 1 of the 63 verified bottom brackets each.
Headset upper, Headset. 67 more findings from the same check, on up to 1 of the 70 verified headsets each.
Headset lower, Headset. 44 more findings from the same check, on up to 1 of the 70 verified headsets each.
Gearbox frame, Gearbox. 12 more findings from the same check, on up to 1 of the 6 verified gearboxs each.
Rear brake mount, Rear Brake. 12 more findings from the same check, on up to 1 of the 92 verified brakes each.
Rear axle, Rear Hub. 6 more findings from the same check, on up to 27 of the 124 verified rear hubs each.
Wheel config, Front Rim. 6 more findings from the same check, on up to 33 of the 75 verified rims each.
Wheel config, Front Wheel. 6 more findings from the same check, on up to 90 of the 270 verified front wheels each.
Oem shock, Rear Shock. 5 more findings from the same check, on up to 1 of the 1025 verified rear shocks each.
Rear axle, Rear Wheel. 4 more findings from the same check, on up to 143 of the 607 verified rear wheels each.
Wheel config, Front Tire. 4 more findings from the same check, on up to 21 of the 617 verified tires each.
Wheel config, Rear Rim. 4 more findings from the same check, on up to 3 of the 75 verified rims each.
Wheel config, Rear Tire. 4 more findings from the same check, on up to 21 of the 617 verified tires each.
Wheel config, Rear Wheel. 4 more findings from the same check, on up to 7 of the 607 verified rear wheels each.
Seatpost diameter small, Seatpost (rigid). 3 more findings from the same check, on up to 22 of the 70 verified seatpost (rigid)s each.
Dropper diameter small, Dropper Post. 2 more findings from the same check, on up to 119 of the 350 verified dropper posts each.
Rear rotor min, Rear Rotor. 2 more findings from the same check, on up to 41 of the 177 verified rotors each.
Steerer, Fork. 2 more findings from the same check, on up to 55 of the 490 verified forks each.
Wheel config, Fork. 2 more findings from the same check, on up to 12 of the 490 verified forks each.
Dropper diameter, Dropper Post. 1 more finding from the same check, on up to 72 of the 350 verified dropper posts each.
Seatpost diameter, Seatpost (rigid). 1 more finding from the same check, on up to 4 of the 70 verified seatpost (rigid)s each.
Open a variant in the builder to see the ones that apply to your own parts.
Check before you buy
- Check before you buywarning · ForkFork travel: 160mm exceeds the frame's rated max of 150mm. On 77 of the 490 verified forks in this catalog. Applies to all 2 variants.
- Check before you buywarning · ForkFork travel: 170mm exceeds the frame's rated max of 150mm. On 52 of the 490 verified forks in this catalog. Applies to all 2 variants.
- Check before you buywarning · ForkFork travel: 180mm exceeds the frame's rated max of 150mm. On 42 of the 490 verified forks in this catalog. Applies to all 2 variants.
- Check before you buywarning · Rear RotorRear rotor: 203mm exceeds the frame max of 180mm. A post-mount adapter is the part that steps a caliper up to a bigger rotor, sold in the maker’s own discrete size steps (commonly +20mm, e.g. 160 to 180mm or 180 to 200mm) rather than for any gap - and not every step is offered for every caliper model, so check the maker’s own fitment before buying. On 40 of the 177 verified rotors in this catalog. Applies to 1 of 2 variants.
- Check before you buywarning · ForkFork travel: 200mm exceeds the frame's rated max of 150mm. On 19 of the 490 verified forks in this catalog. Applies to all 2 variants.
- Check before you buywarning · ForkFork travel: 190mm exceeds the frame's rated max of 150mm. On 16 of the 490 verified forks in this catalog. Applies to all 2 variants.
Rear tire frame, Rear Tire. 10 more findings from the same check, on up to 15 of the 617 verified tires each.
Rear rotor max, Rear Rotor. 5 more findings from the same check, on up to 15 of the 177 verified rotors each.
Fork travel, Fork. 1 more finding from the same check, on up to 9 of the 490 verified forks each.
Open a variant in the builder to see the ones that apply to your own parts.
Worth knowing
- Worth knowinginfo · ForkHeadset: Trek Roscoe Gen 4 takes ZS49 upper / ZS56 lower cups (S.H.I.S.) to mount the fork - many frames ship with one; pick one here if yours does not. On 490 of the 490 verified forks in this catalog. Applies to 1 of 2 variants.
- Worth knowinginfo · Dropper PostLong-drop post: the BikeYoke Divine 2.0 (185mm) needs deep seat-tube insertion - check the maker's insertion calculator for your Trek Roscoe Gen 3 frame size. On 3 of the 350 verified dropper posts in this catalog. Applies to 1 of 2 variants.
- Worth knowinginfo · Dropper PostLong-drop post: the BikeYoke Divine 2.0 (185mm) needs deep seat-tube insertion - check the maker's insertion calculator for your Trek Roscoe Gen 4 frame size. On 3 of the 350 verified dropper posts in this catalog. Applies to 1 of 2 variants.
- Worth knowinginfo · Dropper PostLong-drop post: the BikeYoke Divine 2.0 (213mm) needs deep seat-tube insertion - check the maker's insertion calculator for your Trek Roscoe Gen 3 frame size. On 3 of the 350 verified dropper posts in this catalog. Applies to 1 of 2 variants.
- Worth knowinginfo · Dropper PostLong-drop post: the BikeYoke Divine 2.0 (213mm) needs deep seat-tube insertion - check the maker's insertion calculator for your Trek Roscoe Gen 4 frame size. On 3 of the 350 verified dropper posts in this catalog. Applies to 1 of 2 variants.
- Worth knowinginfo · ForkHeadset: mounting the RockShox 35 Gold RL in Trek Roscoe Gen 3 needs a headset - many frames ship with one; pick one here if yours does not. On 3 of the 490 verified forks in this catalog. Applies to 1 of 2 variants.
Headset advisory, Fork. 485 more findings from the same check, on up to 2 of the 490 verified forks each.
Dropper insertion, Dropper Post. 176 more findings from the same check, on up to 1 of the 350 verified dropper posts each.
Bb advisory, Crankset. 97 more findings from the same check, on up to 2 of the 98 verified cranksets each.
Open a variant in the builder to see the ones that apply to your own parts.
$699.99 to $900.00 MSRP·2250 to 2400 g
What the maker states
- Wheel configs
- Frame takes 29" wheels
- Maximum fork travel
- Approved for a fork up to 150 mm of travel
- Rear axle
- Boost 148x12
- Bottom bracket
- Bottom-bracket shell BSA threaded 73
- Head tube upper
- Upper head-tube bore ZS49 (S.H.I.S.) (on 1 of 2 variants)
- Head tube lower
- Lower head-tube bore ZS56 (S.H.I.S.) (on 1 of 2 variants)
A value shown as a set or a range differs between this model’s variants and is never one variant’s spec.
2 verified variants
| Variant | Head tube upper | Head tube lower | Maximum rear rotor | Price (MSRP) | Weight | Source | Last checked | Build |
|---|---|---|---|---|---|---|---|---|
| Roscoe Gen 3 (2022) | not stated | not stated | Rear rotor up to 180 mm (maker-stated maximum) | $900.00 | 2400 g | maker’s page | 2026-07-17 | Build with this |
| Roscoe Gen 4 (2026) | Upper head-tube bore ZS49 (S.H.I.S.) | Lower head-tube bore ZS56 (S.H.I.S.) | Rear rotor up to 203 mm (maker-stated maximum) | $699.99 | 2250 g | maker’s page | 2026-07-20 | Build with this |
The rest of what the maker states10 stated·26 not published
- Seatpost diameter 31.6 mm.
- Rear rotor up to 180 mm (maker-stated maximum) (on 1 of 2 variants); Rear rotor up to 203 mm (maker-stated maximum) (on 1 of 2 variants).
- Tire up to 2.6" (maker-stated maximum).
- SRAM Universal Derailleur Hanger.
- Fits a Tapered (1.5-1.125) head tube.
- Brake mount Post mount.
- Hardtail frame.
- Aluminum construction.
- Sold as a frameset, not a bare frame (on 1 of 2 variants); Sold as a frame only (on 1 of 2 variants).
- Rear rotor no smaller than 180 mm (on 1 of 2 variants).
26 further fields the checker looks for are not published by Trek, so we leave them blank rather than estimate them, and those 26 checks stay silent on this frame. They are shock eye, shock stroke, shock mount, travel, alt shock strokes, shock stroke by size, travel by stroke, minimum fork travel, design fork travel, fork travel hard, coil approved, drive mode, dropout type, gearbox mount, belt drive, udh unstated, udh retrofit kit, maximum tire mm, maximum tire basis, maximum tire by wheel, head tube upper alts, head tube lower alts, headset included, headset included model, headset included part and maker shocks. Each is recorded as “not stated by the maker (not checked)”.
Source: each variant links the maker’s own page in the table above. Last checked 2026-07-17 to 2026-07-20.
Checked against
The checker ran this model against every verified part below that it has a slot for, the same way it checks a build in the builder. What follows is the verdict it actually produced for that specific pairing — not a recommendation, and not a guarantee any of these parts fits your own bike.
- 5DEV R-SPEC Trail/Enduro Cranks (Crankset) Worth knowing
- 9point8 Fall Line (Dropper Post) Will not fit
- 9point8 Stout (31.8, 30mm) (Stem) No conflicts found
- ACID SLX 30 front (Front Wheel) No conflicts found
- ACID SLX 30 rear (Rear Wheel) No conflicts found
- Acros ZS44/ZS56 (Headset) Will not fit
6 of 1701 counterparts with a page of their own that the checker actually probed this model against, in alphabetical order by brand and model — never by price, popularity or the verdict itself.