Trek Marlin+ 8 E-Bike Review
Manufacturer: Trek
Price: $3,499
Introduction
The Trek Marlin+ 8 is a modern electric mountain bike (e-MTB) that builds on Trek’s popular Marlin series. Known for producing high-performance and dependable bikes, Trek adds electric power to this well-loved platform, creating a hardtail e-MTB suitable for new and experienced riders alike. This review explores the Marlin+ 8’s components, performance, and value to help you determine if it fits your needs.
Key Features
- Bosch Active Line Plus mid-drive motor (250W, 50Nm torque)
- Bosch CompactTube 400Wh battery integrated in the downtube
- RockShox Recon Silver RL fork with 120mm of travel (100mm on XS frame)
- Shimano Deore 12-speed drivetrain
- Shimano 4-piston hydraulic disc brakes with 203mm rotors
- Bontrager Gunnison Pro XR 2.6” tubeless-ready tires
- Bosch Purion 200 display with smart system controls
- Color options: Mercury or Purple Flip to Black Fade
Specifications
- Motor Power: 250W Bosch Active Line Plus mid-drive
- Torque: 50Nm
- Battery: Bosch CompactTube 400Wh Lithium-ion
- Assistance Level: Class 1 (pedal assist up to 20 mph / 32 km/h)
- Display: Bosch Purion 200
- Frame: Alpha Gold Aluminum
- Suspension: RockShox Recon Silver RL, 120mm travel (100mm on XS)
- Drivetrain: Shimano Deore 12-speed
- Brakes: Shimano 4-piston hydraulic disc brakes, 203mm rotors
- Tires: 29×2.60” (XS and S frames use 27.5”)
- Weight: Approx. 47 lbs (21.3 kg)
- Max Weight Capacity: 300 lbs (rider + gear + bike)
- Lights: Not included

Product Overview
The Marlin+ 8 retains the simplicity and responsiveness of a hardtail mountain bike while enhancing it with Bosch’s quiet, natural-feeling electric assistance. The integrated battery keeps the frame sleek and balanced, while the powerful mid-drive motor adds noticeable support during climbs and long rides. The RockShox fork offers solid bump absorption for light trails and off-road exploration.
Shimano’s 12-speed Deore drivetrain shifts crisply and reliably, while the 4-piston hydraulic brakes offer serious stopping power—important when descending with the added speed and weight of an e-bike. The Bontrager tires offer a confident grip on loose or rough terrain.
The Bosch Purion 200 display is compact, easy to use, and integrates well with Bosch’s smart system. It shows your speed, assist level, battery life, and other essential ride stats at a glance.
Performance in the Field
On pavement, the Marlin+ 8 provides just the right amount of electric boost to handle headwinds and inclines without sacrificing the feel of a traditional mountain bike. The motor is quiet and responsive thanks to the torque sensor, which adjusts output based on your pedal pressure.
On gravel and light trails, the suspension fork smooths out terrain without bouncing unnecessarily. The wide tires give ample traction, and the bike’s geometry keeps you stable during climbs and descents. Power delivery remains consistent, even when transitioning from flat to steep ground.
Riders will appreciate the Marlin+ 8’s battery range, which is enough for long day rides. In Eco mode, the 400Wh battery can deliver over 40 miles on mixed terrain depending on conditions. The motor and battery are both easy to manage for new e-bike users.

Pros:
- Smooth and intuitive pedal-assist from the Bosch mid-drive motor
- Integrated 400Wh battery offers solid range for most riders
- Trail-capable RockShox fork and wide tires provide confident handling
- 4-piston hydraulic brakes ensure safety and strong braking
- Modern geometry and clean internal routing
Cons:
- Class 1 assist (20 mph) may be limiting for riders expecting higher-speed support
- 400Wh battery is sufficient but smaller than some competitors
- No integrated lights or fenders; requires aftermarket add-ons

Final Verdict
The Trek Marlin+ 8 delivers excellent performance for riders looking to bridge the gap between traditional mountain bikes and modern electric assistance. Its capable geometry, powerful motor, and responsive handling make it an excellent companion for trail rides, commutes, or weekend explorations. While it lacks a few accessories out of the box, the core of this e-bike—the drivetrain, motor, and frame—are built for performance and reliability.
User reviews are quite useful in determining overall satisfaction. As of the time of this writing, there were only 5 reviews on the company website, but they were all 5/5 stars and excellent reviews.
For $3,499, it’s competitively priced among entry-level e-MTBs from top-tier brands. Its combination of trusted Bosch electronics, a durable Trek frame, and reliable Shimano components makes the Marlin+ 8 a standout option for both beginners and seasoned mountain bikers looking to go electric.
If you’re in the market for an electric bike that can take on a variety of terrain while delivering a smooth and powerful ride, the Trek Marlin+ 8 is a confident choice.