Trek Marlin 7 Gen 3 Mountain Bike 2026 - Hardtail MTB
The Trek Marlin 7 Gen 3 hits the sweet spot between everyday performance and true trail capability. Whether you’re stepping up your singletrack skills or want a hardtail with dependable components and a smart spec list, the Marlin 7 brings serious value and versatility. Its updated Alpha Silver Aluminium frame features longer, slacker geometry that gives you more confidence when descending and more stability at speed, while internal cable routing keeps things neat and protected.
Key Features:
- Alpha Silver Aluminium frame with trail geometry and internal cable routing
- RockShox Judy Silver Solo Air fork with 100 mm travel
- SRAM NX/SX Eagle 12-speed drivetrain with wide 11–50T cassette
- Shimano MT200 hydraulic disc brakes front and rear
- Bontrager Kovee 29" or 27.5" wheels with Maxxis Rekon tyres
- Tubeless-ready rims and dropper-ready frame
- Available with 0% APR finance
At the front, the RockShox Judy Silver fork delivers 100 mm of air-sprung travel with rebound adjustment and a TurnKey lockout. Compared to coil forks, the Solo Air spring offers better tunability and reduced weight making it a real step up in comfort and control for off-road riding. You can dial in your suspension to match your weight and terrain, making it great for progressing your skills.
Shifting is smooth and precise thanks to the SRAM SX/NX Eagle 12-speed drivetrain, which features a massive 11–50T cassette for spinning up steep climbs and hammering flats. The 30T front ring balances climbing efficiency and pedal clearance, while the chainring’s narrow-wide tooth profile helps keep your chain secure over rough terrain.
Shimano MT200 hydraulic disc brakes bring reliable stopping power, giving you control whether you're navigating switchbacks or commuting in the rain. Rolling on Bontrager Kovee double-wall rims, the Marlin 7 is tubeless-ready out the box, and comes fitted with fast-rolling Maxxis Rekon tyres featuring durable EXO sidewalls, ideal for XC-style riding and rougher trail conditions.
The frame is dropper post compatible and includes mounts for racks and a kickstand, so you can equip it for commuting, bikepacking or weekend adventures. With its modern handling and quality kit where it counts, the Marlin 7 Gen 3 is a great choice for riders who want to take mountain biking seriously without stretching the budget.
Occasionally, without notice, manufacturers change product design and/or specifications.
| Frame | Alpha Silver Aluminium, internal derailleur and dropper post routing, rack and kickstand mount, 135x5 mm ThruSkew |
| Fork | RockShox Judy Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout, 100 mm QR, 100 mm travel |
| Headset | Semi-Integrated, 1-1/8" |
| Stem | Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree |
| Bars | Bontrager alloy, 31.8 mm, 15 mm rise |
| Front Brake | Shimano MT200 Hydraulic Disc |
| Rear Brake | Shimano MT200 Hydraulic Disc |
| Brake Lever | SHIMANO MT200 |
| Rear Mech | SRAM NX Eagle, 12-speed |
| Shifters | SRAM SX Eagle, 12-speed |
| Speed | 12 |
| Rims | Bontrager Kovee, double-wall, Tubeless-Ready, 28-hole, 23 mm width, Presta valve |
| Front Hub | Formula DC-20 LW, alloy, 6-bolt, 5x100 mm QR |
| Rear Hub | Formula DC-22LW, 6-bolt, Shimano 8/9/10 freehub, 135x5 mm QR |
| Front Tyre | Maxxis Rekon, tubeless ready, EXO casing, folding bead, 60 tpi |
| Rear Tyre | Maxxis Rekon, tubeless ready, EXO casing, folding bead, 60 tpi |
| Seat Post | TranzX JD-YSI34, internal routing, 34.9 mm |
| Saddle | Bontrager Verse Short, stainless steel rails |
| Chainset | SRAM SX Eagle, 30T steel ring, 49 mm chainline |
| Bottom Bracket | Truvativ Powerspline, 73 mm, threaded cartridge, 118 mm spindle |
| Chain | SRAM SX Eagle, 12-speed |
| Cassette | SRAM PG-1210 Eagle, 11-50, 12-speed |
| Weight | 14.15 kg |
Trek Marlin Gen 3 Sizing Guide
| Size | Height (cm) | Height (Feet / Inches) | Inseam (cm) | Inseam (Inches) |
|---|---|---|---|---|
| XS | 145 - 155 cm | 4'9" - 5'1" | 69 - 73 cm | 27" - 29" |
| S | 155 - 165 cm | 5'1" - 5'5" | 74 - 78 cm | 29" - 31" |
| M | 165 - 176 cm | 5'5" - 5'9" | 79 - 83 cm | 31" - 33" |
| ML | 173 - 180 cm | 5'8" - 5'11" | 81 - 86 cm | 32" - 34" |
| L | 177 - 188 cm | 5'10" - 6'2" | 84 - 89 cm | 33" - 35" |
| XL | 188 - 195 cm | 6'2" - 6'5" | 89 - 91 cm | 35" - 36" |
| XXL | 195 - 203 cm | 6'5" - 6'8" | 91 - 97 cm | 36" - 38" |
What size frame do I need if I am between sizes? - read here
Trek Marlin Gen 3 Geometry Chart
| Size | XS | S | M | ML | L | XL | XXL |
|---|---|---|---|---|---|---|---|
| Stack | 563 | 572 | 601 | 614 | 618 | 637 | 651 |
| Reach | 390 | 415 | 440 | 455 | 470 | 495 | 520 |
| Head Tube Length | 90 | 100 | 105 | 110 | 115 | 135 | 150 |
| Head Tube Angle | 66.5° | 66.5° | 66.5° | 66.5° | 66.5° | 66.5° | 66.5° |
| Bottom Bracket Height | 313 | 313 | 308 | 308 | 308 | 308 | 308 |
| Bottom Bracket Drop | 45 | 45 | 60 | 60 | 60 | 60 | 60 |
| Trail | 110 | 110 | 110 | 110 | 110 | 110 | 110 |
| Fork Rake/Offset | 42 | 42 | 46 | 46 | 46 | 46 | 46 |
| Chainstay Length | 433 | 433 | 438 | 438 | 438 | 438 | 438 |
| Wheelbase | 1092 | 1121 | 1153 | 1180 | 1197 | 1230 | 1261 |
| Top Tube Length (horizontal) | 551 | 579 | 615 | 631 | 647 | 678 | 707 |
| Standover Height | 658 | 692 | 747 | 759 | 771 | 791 | 816 |
| Seat Tube Length | 340 | 370 | 420 | 435 | 450 | 500 | 540 |
| Seat Tube Angle | 73.8° | 73.8° | 73.4° | 73.4° | 73.4° | 73.4° | 73.4° |
| Effective Seat Tube Angle | 74.0° | 74.0° | 74.0° | 74.0° | 74.0° | 74.0° | 74.0° |
All measurements are in mm unless otherwise stated.
The above table shows the standard geometry for the bicycle as shipped, other geometry configurations may be available with certain bikes. Please contact us via Live Chat to find out more.
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Trek Marlin 7 Gen 3 Mountain Bike 2026 - Hardtail MTB
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