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Today’s Deals2025 Trek
Marlin 4 Gen 2
A 27.5″ / 29″ aluminum frame hardtail crosscountry bike with mid-range components and tektro mechanical disc brakes.
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Manufacturer Price
$599| Weight | 32.2 lbs |
|---|---|
| Frame | Aluminum |
| Suspension | Hardtail, 80mm |
| Fork | Suntour XCE |
| Wheels | 27.5″ / 29″ Aluminum |
| Drivetrain | 2 × 7 |
| Groupset | Tourney, Altus |
| Brakes | Tektro Mechanical Disc |
Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.
Compare the full Marlin model range
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Jul 2025
A 27.5″ / 29″ aluminum frame hardtail crosscountry bike with mid-range components.
Modern XC geometry
Clean aesthetics and internal cable routing
Shimano CUES drivetrain democratizes great shifting
Straight headtube, QR front hub, and “Thru-Skew” axle in the rear limit future upgrades
Wheels are not tubeless compatible
Heavy, poor performing 80 mm travel fork
Apr 2024 · James Huang
Trek’s entry-level aluminum hardtail mountain bike.
Fantastic frame geometry
Excellent shifting
Good tires
Looks great
Generous tire clearance
Easy-to-live-with semi-internal routing
Sort of a rear thru-axle.
Mega-heavy fork with minimal adjustability
Tubeless costs extra
Limited upgrade potential.
May 2023 · Andrew McLemore
Riders can expect updated geometry, a new frame, increased tire clearance and a rear axle system that "enhances stability," Trek said.
Feb 2023 · Oscar Huckle
Can the Marlin compete with the bigger players?
Lots of frame sizes
Excellent tyre choice
Dropper seatpost
Upgrade potential
Roomier seated position would be preferred
Quick-release rather than thru-axle
Rattly internal cable routing
| Frame | Alpha Silver Aluminum, internal routing, chainstay disc brake mount, rack and kickstand mount, 135x5mm QR - XS , S : Alpha Silver Aluminum, curved top tube, internal routing, chainstay disc brake mount, rack and kickstand mount, 135x5mm QR; ML , M , L , XL : Alpha Silver Aluminum, internal routing, chainstay disc brake mount, rack and kickstand mount, 135x5mm QR BB Standard: BSA, 73mm, Threaded Tire Clearance: 2.2" Colors: Matte Hex Blue; Crimson |
|---|---|
| Fork | SR Suntour Suspension Fork XCE 28 27.5'' 80mm - XS : SR Suntour XCE 28, coil spring, preload, 42mm offset for 27.5'' wheel, 100mm QR, 80mm travel; S : SR Suntour XCE 28, coil spring, preload, 42mm offset for 27.5'' wheel, 100mm QR, 100mm travel; ML , M , L , XL : SR Suntour XCE 28, coil spring, preload, 46mm offset for 29'' wheel, 100mm QR, 100mm travel Travel: 80mm Spring Type: Coil |
| Bottom Bracket | VP BC73, 73mm, threaded cartridge |
| Headset | Semi-integrated, 1-1/8'' |
| Stem | Bontrager Comp Blendr Stem, 31.8x50mm, 7 Degree Rise, Black - XS , S : Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 50mm length; M : Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 60mm length; ML , L : Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 70mm length; XL : Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 80mm length |
| Handlebar | Bontrager Approved Lowriser, 31.8x690mm, 5mm Rise, 9D Bend/4D Upsweep, Black - XS , S : Bontrager alloy, 31.8mm, 5mm rise, 690mm width; ML , M , L , XL : Bontrager alloy, 31.8mm, 15mm rise, 750mm width |
| Saddle | Bontrager Verse Short, stainless steel rails |
| Seatpost | Bontrager Approved Seatpost, 31.6x330mm, 12mm Offset, Black - XS , S : Bontrager alloy, 31.6mm, 12mm offset, 330mm length; M : Bontrager alloy, 31.6mm, 12mm offset, 360mm length; ML , L , XL : Bontrager alloy, 31.6mm, 12mm offset, 400mm length Type: Rigid |
| Pedals | VP-536 nylon platform |
| Grips | Bontrager XR Endurance Comp, lock-on |
| Rear Derailleur | Shimano Tourney TY300 |
|---|---|
| Front Derailleur | Shimano Altus M315, 34.9mm clamp, top swing, dual pull |
| Crank | undefined - M , XS , S : ProWheel TM-CY10, 36/22, 170mm length; ML , L , XL : ProWheel TM-CY10, 36/22, 175mm length |
| Shifters | Shimano Acera STI. Item Number: ST-EF500-2L, 2-Speed, Rim Brake, Shift cable Length: 1800mm, Left. (Visit si.shimano.com for compatibility, manuals and exploded views) - ML , M , XS , L , S , XL : Shimano EF500, 8 speed; ML , M , XS , L , S , XL : Shimano EF500, 7 speed |
| Cassette | Shimano TZ500, 14-34, 7 speed |
| Chain | KMC Z7, 7 speed |
| Brakes | Tektro MD-M280 mechanical disc brake - ML , M , XS , L , S , XL : Tektro MD-M280 mechanical disc; ML , M , XS , L , S , XL : Tektro MD-M281 mechanical disc; ML , M , XS , L , S , XL : Tektro MD-M280 mechanical disc, 160mm rotor; ML , M , XS , L , S , XL : Tektro MD-M281 mechanical disc, 160mm rotor Type: Tektro Mechanical Disc |
| Rims | Bontrager Connection, double-wall, 32-hole, 20mm width, schrader valve |
|---|---|
| Spokes | 14g stainless steel, black |
| Front Hub | Formula DC-20, alloy, 6-bolt, 5x100mm QR |
| Rear Hub | Formula DC-31, alloy, 6-bolt, 6/7/8 speed freewheel, 135x5mm QR |
| Tires | Bontrager Tire XR2 Comp 27.5 x 2.20'' - XS , S : Bontrager XR2 Comp, wire bead, 30 tpi, 27.5x2.20''; ML , M , L , XL : Bontrager XR2 Comp, wire bead, 30 tpi, 29x2.20'' |
| Disc Rotors | Tektro TR160-24 160mm 6-bolt rotor - ML , M , XS , L , S , XL : Tektro wave, 6-bolt, 160mm; ML , M , XS , S : Tektro, 6-bolt, 160mm |
First added July 5
Last updated April 4
Not listed for 70 days