Marlin 4 Gen 2
A 27.5″ / 29″ aluminum frame hardtail crosscountry bike with mid-range components and mechanical disc brakes.
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Mentioned in Which Trek Marlin is Best for You?
Manufacturer Price
$529Weight | 31.7 lbs |
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Frame | Aluminum |
Suspension | Hardtail, 100mm |
Fork | Suntour XCE |
Wheels | 27.5″ / 29″ Aluminum |
Drivetrain | 3 × 7 |
Groupset | Tourney, Shimano |
Brakes | 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
View Comparison4'9" – 5'2"
5'0" – 5'6"
5'4" – 5'10"
5'8" – 5'11"
5'9" – 6'3"
6'1" – 6'6"
6'4" – 6'8"
Sep 2023
Not only is the Trek Marlin one of the most searched bikes on our website, it's also Trek's best selling mountain bike! And for good ...
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
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 | Size: XS, S, Alpha Silver Aluminum, curved top tube, internal routing, chainstay disc brake mount, rack and kickstand mount, 135x5mm QR; Size: M, ML, L, XL, XXL, 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 Trek Black; Voodoo Aloha Green |
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Fork | Size: XS, SR Suntour XCE 28, coil spring, preload, 42mm offset for 27.5'' wheel, 100mm QR, 80mm travel; Size: S, SR Suntour XCE 28, coil spring, preload, 42mm offset for 27.5'' wheel, 100mm QR, 100mm travel; Size: M, ML, L, XL, XXL, SR Suntour XCE 28, coil spring, preload, 46mm offset for 29'' wheel, 100mm QR, 100mm travel Travel: 100mm Spring Type: Coil |
Bottom Bracket | Size: XS, S, M, ML, L, XL, XXL, VP BC73, 73mm, threaded cartridge; Size: XS, S, M, ML, L, XL, XXL, Sealed cartridge, 73mm |
Headset | Semi-integrated, 1-1/8'' |
Stem | Size: XS, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 50mm length; Size: S, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 60mm length; Size: M, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 70mm length; Size: ML, L, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 80mm length; Size: XL, XXL, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 90mm length |
Handlebar | Size: XS, S, Bontrager alloy, 31.8mm, 5mm rise, 690mm width; Size: M, ML, L, XL, XXL, Bontrager alloy, 31.8mm, 5mm rise, 720mm width |
Saddle | Bontrager Arvada, steel rails, 138mm width |
Seatpost | Size: XS, S, Bontrager alloy, 31.6mm, 12mm offset, 330mm length; Size: M, Bontrager alloy, 31.6mm, 12mm offset, 360mm length; Size: ML, L, XL, XXL, 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 |
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Front Derailleur | Shimano Tourney TY300, 34.9mm clamp, down swing, down pull |
Crank | Size: XS, S, M, Shimano Tourney TY301, 42/34/24, 170mm length; Size: ML, L, XL, XXL, Shimano Tourney TY301, 42/34/24, 175mm length |
Shifters | Shimano EF500, 7 speed |
Cassette | Shimano TZ500, 14-28, 7 speed |
Chain | KMC Z7, 7 speed |
Brakes | Size: XS, S, M, ML, L, XL, XXL, Tektro MD-M280 mechanical disc, 160mm rotor; Size: XS, S, M, ML, L, XL, XXL, Tektro MD-M281 mechanical disc, 160mm rotor Type: Mechanical Disc |
Rims | Size: XS, S, Bontrager Connection, double-wall, 32-hole, 20 mm width, Schrader valve, Black; Size: XS, S, M, ML, L, XL, XXL, Bontrager Connection, double-wall, 32-hole, 20mm width, schrader valve; Size: M, ML, L, XL, XXL, Bontrager Connection, double-wall, 32-hole, 20 mm width, Schrader valve |
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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 | Size: XS, S, Bontrager XR2 Comp, wire bead, 30 tpi, 27.5x2.20''; Size: M, ML, L, XL, XXL, Bontrager XR2 Comp, wire bead, 30 tpi, 29x2.20''; Size: M, ML, L, XL, XXL, Bontrager XR2 Comp, wire bead, 30 tpi, 29x2.00'' |
Last updated May 4