Marlin 7 Gen 3
A 27.5″ / 29″ / 29″ aluminum frame hardtail crosscountry bike with upper mid-range components.
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Manufacturer Price
$1,299Weight | 32.7 lbs |
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Frame | Aluminum |
Suspension | Hardtail, 80mm |
Fork | RockShox Judy Silver TK |
Wheels | 27.5″ / 29″ / 29″ Aluminum |
Drivetrain | 1 × 12 |
Groupset | SX Eagle |
Brakes | Hydraulic Disc |
Seatpost | Dropper |
For This Bike
Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.
Compare the full Marlin model range
View Comparison4'8" – 5'2"
5'0" – 5'6"
5'4" – 5'10"
5'8" – 5'11"
5'9" – 6'3"
6'1" – 6'6"
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: XXS, XS, Alpha Silver Aluminum, curved top tube, internal derailleur & dropper post routing, rack and kickstand mount, 135x5mm ThruSkew; Size: S, M, ML, L, XL, XXL, Alpha Silver Aluminum, internal derailleur & dropper post routing, rack and kickstand mount, 135x5mm ThruSkew BB Standard: BSA, 73mm, Threaded Tire Clearance: 2.4" |
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Fork | Size: XXS, RockShox Judy Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout, 42mm offset for 27.5'' wheel, 100mm QR, 80mm travel; Size: XS, S, RockShox Judy Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout, 42mm offset for 27.5'' wheel, 100mm QR, 100mm travel; Size: M, ML, L, XL, XXL, RockShox Judy Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout, 46mm offset for 29'' wheel, 100mm QR, 100mm travel Travel: 80mm Spring Type: Air |
Bottom Bracket | Truvativ Powerspline, 73mm, threaded cartridge, 118mm spindle |
Headset | Semi-integrated, 1-1/8'' |
Stem | Size: XXS, XS, S, Bontrager Comp, 31.8mm, 7 degree, 35mm length; Size: M, ML, L, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 50mm length; Size: XL, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 60mm length; Size: XXL, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 70mm length |
Handlebar | Size: XXS, XS, Bontrager alloy, 31.8mm, 5mm rise, 690mm width; Size: S, Bontrager alloy, 31.8mm, 15mm rise, 720mm width; Size: M, ML, L, XL, XXL, Bontrager alloy, 31.8mm, 15mm rise, 750mm width |
Saddle | Bontrager Verse Short, stainless steel rails |
Seatpost | Size: XXS, XS, S, TranzX JD-YSP18, 100mm travel, internal routing, 31.6mm, 361mm length; Size: M, TranzX JD-YSP18, 130mm travel, internal routing, 31.6mm, 425mm length; Size: ML, L, XL, XXL, TranzX JD-YSP18, 150mm travel, internal routing, 31.6mm, 470mm length Type: Dropper |
Pedals | VP-536 nylon platform |
Grips | Bontrager XR Trail Comp, nylon lock-on |
Rear Derailleur | SRAM SX Eagle |
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Crank | Size: XXS, SRAM SX Eagle, 30T steel ring, 49mm chainline, 155mm length; Size: XS, S, M, SRAM SX Eagle, 30T steel ring, 49mm chainline, 170mm length; Size: ML, L, XL, XXL, SRAM SX Eagle, 30T steel ring, 49mm chainline, 175mm length |
Shifters | SRAM SX Eagle, 12 speed |
Cassette | SRAM PG-1210 Eagle, 11-50, 12 speed |
Chain | SRAM SX Eagle, 12 speed |
Brakes | Shimano MT200 hydraulic disc Type: Hydraulic Disc |
Rims | Bontrager Kovee, double-wall, Tubeless Ready, 28-hole, 23mm width, Presta valve |
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Front Hub | Formula DC-20 LW, alloy, 6-bolt, 5x100mm QR |
Rear Hub | Formula DC-22LW, 6-bolt, Shimano 8/9/10 freehub, 135x5mm QR |
Tires | Size: XXS, Maxxis Ardent, tubeless ready, EXO casing, folding bead, 60tpi, 26x2.40''; Size: XS, S, Maxxis Ardent, tubeless ready, EXO casing, folding bead, 60tpi, 27.5x2.40''; Size: M, ML, L, XL, XXL, Maxxis Ardent, tubeless ready, EXO casing, folding bead, 60tpi, 29x2.40'' |
Disc Rotors | Size: XXS, XS, S, M, ML, L, XL, XXL, Shimano RT26, 6-bolt,160mm; Size: M, ML, L, XL, XXL, Shimano RT26, 6-bolt,180mm |
Last updated May 11