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Today’s Deals2025 Trek
Marlin 7 Gen 3
A 27.5″ / 29″ aluminum frame hardtail crosscountry bike with upper mid-range components.
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Manufacturer Price
$1,199| Weight | 33.1 lbs |
|---|---|
| Frame | Aluminum |
| Suspension | Hardtail, 80mm |
| Fork | RockShox Judy Silver TK |
| Wheels | 27.5″ / 29″ Aluminum |
| Drivetrain | 1 × 12 |
| Groupset | SX Eagle |
| Brakes | Shimano Hydraulic Disc |
| Seatpost | Dropper |
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 | Frameset Marlin, Alpha Silver Aluminum, curved top tube, internal derailleur & dropper post routing, rack and kickstand mount, 135x5mm ThruSkew - XXS , XS : Alpha Silver Aluminum, curved top tube, internal derailleur & dropper post routing, rack and kickstand mount, 135x5mm ThruSkew; 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" Color: Keswick |
|---|---|
| Fork | Rock Shox Judy Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout, 100mm QR, 80mm travel, SRAM Part Number 00.4020.414.000 - XXS : RockShox Judy Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout, 42mm offset for 27.5'' wheel, 100mm QR, 80mm travel; XS , S : RockShox Judy Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout, 42mm offset for 27.5'' wheel, 100mm QR, 100mm travel; 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 | Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 35mm length - XXS , XS , S : Bontrager Comp, 31.8mm, 7 degree, 35mm length; M , ML , L : Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 50mm length; XL : Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 60mm length; XXL : Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 70mm length |
| Handlebar | Bontrager Approved Lowriser, 31.8x690mm, 5mm Rise, 9D Bend/4D Upsweep, Black - XXS , XS : Bontrager alloy, 31.8mm, 5mm rise, 690mm width; S : Bontrager alloy, 31.8mm, 15mm rise, 720mm width; M , ML , L , XL , XXL : Bontrager alloy, 31.8mm, 15mm rise, 750mm width |
| Saddle | Bontrager Verse Short, stainless steel rails |
| Seatpost | TransX 100mm Dropper Post, 31.6mm, internal routing, 361mm Length, 80mm Min Insertion, 2-bolt cradle, TRANZX part number YSP-18PLQ - XXS , XS , S : TranzX JD-YSP18, 100mm travel, internal routing, 31.6mm, 361mm length; M : TranzX JD-YSP18, 130mm travel, internal routing, 31.6mm, 425mm length; 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, 12 speed |
|---|---|
| Crank | SRAM SX Eagle, 30T steel ring (49mm chainline), 155mm length, SRAM Part Number 00.6118.554.003 - XXS : SRAM SX Eagle, 30T steel ring, 49mm chainline, 155mm length; XS , S , M : SRAM SX Eagle, 30T steel ring, 49mm chainline, 170mm length; 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: Shimano Hydraulic Disc |
| Rims | Bontrager Kovee, double-wall, Tubeless Ready, 28-hole, 23mm width, Presta valve |
|---|---|
| Front Hub | Formula DC-20 LW, alloy, 6-bolt, 100x5mm |
| Rear Hub | Formula DC-22LW, 6-bolt, Shimano 8/9/10 freehub, 135x5mm |
| Tires | Maxxis Ardent Race, tubeless, EXO casing, folding bead, 60tpi, 26x2.40'' - XXS : Maxxis Ardent, tubeless ready, EXO casing, folding bead, 60tpi, 26x2.40''; XS , S : Maxxis Ardent, tubeless ready, EXO casing, folding bead, 60tpi, 27.5x2.40''; M , ML , L , XL , XXL : Maxxis Ardent, tubeless ready, EXO casing, folding bead, 60tpi, 29x2.40'' |
| Disc Rotors | Shimano Tourney Rotor. Item Number: SM-RT26-S, 160mm, 6-Bolt, For Resin Pad only. (Visit si.shimano.com for compatibility, manuals and exploded views) - XXS , XS , S , M , ML , L , XL , XXL : Shimano RT26, 6-bolt, 160mm; M , ML , L , XL , XXL : Shimano RT26, 6-bolt, 180mm |
First added July 5
Last updated June 7