Trek Marlin Frame
What the checker says4411will not fit16check before you buy2401worth 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. 2790 produced no finding of any kind. Each variant produces 1120 distinct errors and 16 distinct warnings.
Will not fit
- Will not fiterror · ForkSteerer mismatch: Fork is Tapered (1.5-1.125) but Frame headset is Straight 1.125 (single-crown). On 429 of the 490 verified forks in this catalog. Applies to all 4 variants.
- Will not fiterror · Rear WheelRear axle mismatch: Frame is 135x5-qr but Rear wheel hub is Boost 148x12. On 410 of the 607 verified rear wheels in this catalog. Applies to all 4 variants.
- Will not fiterror · Rear WheelUnsupported wheel setup: Trek Marlin 4 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 4 variants.
- Will not fiterror · Rear WheelUnsupported wheel setup: Trek Marlin 5 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 4 variants.
- Will not fiterror · Rear WheelUnsupported wheel setup: Trek Marlin 6 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 4 variants.
- Will not fiterror · Rear WheelUnsupported wheel setup: Trek Marlin 7 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 4 variants.
Hardtail shock, Rear Shock. 4096 more findings from the same check, on up to 2 of the 1025 verified rear shocks each.
Bb shell, Bottom Bracket. 136 more findings from the same check, on up to 1 of the 63 verified bottom brackets each.
Udh, Rear Derailleur. 28 more findings from the same check, on up to 1 of the 75 verified rear derailleurs each.
Gearbox frame, Gearbox. 24 more findings from the same check, on up to 1 of the 6 verified gearboxs each.
Rear brake mount, Rear Brake. 24 more findings from the same check, on up to 1 of the 92 verified brakes each.
Wheel config, Front Rim. 12 more findings from the same check, on up to 33 of the 75 verified rims each.
Wheel config, Front Tire. 12 more findings from the same check, on up to 223 of the 617 verified tires each.
Wheel config, Front Wheel. 12 more findings from the same check, on up to 90 of the 270 verified front wheels each.
Wheel config, Rear Tire. 12 more findings from the same check, on up to 223 of the 617 verified tires each.
Wheel config, Fork. 8 more findings from the same check, on up to 157 of the 490 verified forks each.
Wheel config, Rear Rim. 8 more findings from the same check, on up to 3 of the 75 verified rims each.
Wheel config, Rear Wheel. 8 more findings from the same check, on up to 7 of the 607 verified rear 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 Hub. 5 more findings from the same check, on up to 27 of the 124 verified rear hubs each.
Rear axle, Rear Wheel. 3 more findings from the same check, on up to 143 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.
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 100mm. On 77 of the 490 verified forks in this catalog. Applies to all 4 variants.
- Check before you buywarning · ForkFork travel: 140mm exceeds the frame's rated max of 100mm. On 68 of the 490 verified forks in this catalog. Applies to all 4 variants.
- Check before you buywarning · ForkSteerer mismatch: Fork is Straight 1.125 (dual-crown) but Frame headset is Straight 1.125 (single-crown). Both are the same straight 1-1/8in steerer, so the headset itself is not the question. Check that this frame is rated for a dual-crown fork (head tube length and total headset stack) before you build it. On 55 of the 490 verified forks in this catalog. Applies to all 4 variants.
- Check before you buywarning · ForkFork travel: 120mm exceeds the frame's rated max of 100mm. On 52 of the 490 verified forks in this catalog. Applies to all 4 variants.
- Check before you buywarning · ForkFork travel: 170mm exceeds the frame's rated max of 100mm. On 52 of the 490 verified forks in this catalog. Applies to all 4 variants.
- Check before you buywarning · ForkFork travel: 150mm exceeds the frame's rated max of 100mm. On 51 of the 490 verified forks in this catalog. Applies to all 4 variants.
- Check before you buywarning · ForkFork travel: 130mm exceeds the frame's rated max of 100mm. On 43 of the 490 verified forks in this catalog. Applies to all 4 variants.
- Check before you buywarning · ForkFork travel: 180mm exceeds the frame's rated max of 100mm. On 42 of the 490 verified forks in this catalog. Applies to all 4 variants.
Fork travel, Fork. 4 more findings from the same check, on up to 19 of the 490 verified forks each.
Rear rotor max, Rear Rotor. 4 more findings from the same check, on up to 40 of the 177 verified rotors each.
Open a variant in the builder to see the ones that apply to your own parts.
Worth knowing
Headset advisory, Fork. 1944 more findings from the same check, on up to 3 of the 490 verified forks each.
Dropper insertion, Dropper Post. 360 more findings from the same check, on up to 3 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.
$400.00 to $700.00 MSRP·2100 to 2250 g
What the maker states
- Wheel configs
- Frame takes 29" wheels
- Maximum fork travel
- Approved for a fork up to 100 mm of travel
- Rear axle
- 135x5-qr
- Bottom bracket
- Bottom-bracket shell BSA threaded 73
- Seat tube
- Seatpost diameter 31.6 mm
- Maximum rear rotor
- Rear rotor up to 180 mm (maker-stated maximum)
4 verified variants
| Variant | Price (MSRP) | Weight | Source | Last checked | Build |
|---|---|---|---|---|---|
| Marlin 7 Gen 3 (2026) | $700.00 | 2100 g | maker’s page | 2026-07-22 | Build with this |
| Marlin 4 Gen 3 (2026) | $400.00 | 2250 g | maker’s page | 2026-07-17 | Build with this |
| Marlin 5 Gen 3 (2026) | $500.00 | 2220 g | maker’s page | 2026-07-17 | Build with this |
| Marlin 6 Gen 3 (2026) | $600.00 | 2180 g | maker’s page | 2026-07-17 | Build with this |
The rest of what the maker states6 stated·30 not published
- The maker does not state a UDH dropout.
- Fits a Straight 1.125 (single-crown) head tube.
- Brake mount Post mount.
- Hardtail frame.
- Sold as a frameset, not a bare frame.
- Aluminum construction.
30 further fields the checker looks for are not published by Trek, so we leave them blank rather than estimate them, and those 30 checks stay silent on this frame. They are minimum rear rotor, 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, maximum tire mm, maximum tire basis, maximum tire by wheel, head tube upper, head tube lower, 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 2026-07-22.
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) Will not fit
- Acros ZS44/ZS56 (Headset) No conflicts found
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.