Trek Marlin+ 6 27.5 Bike 2026 Matte Keswick Green

Point it up the trail, roll the throttle of your legs, and let the assist smooth out the grind—this bike is built to keep rides fun when the climbs get long and the terrain gets choppy.

The Trek Marlin+ 6 pairs the Bosch Active Line Plus motor’s 50 Nm of smooth, quiet support with trail-friendly geometry and a 120mm fork for confident control on mixed terrain.

Key Features

• Motor Torque: 50 Nm
• Battery Capacity: 400 Wh
• Fork Travel: 120mm (S–XL), 100mm (XS)
• Drivetrain Speeds: 9-speed
• Wheel Size: 27.5" (XS, S), 29" (M–XL)
• Core Drive System: Bosch Active Line Plus mid-drive motor paired with Bosch CompactTube 400Wh battery and Purion 200 display for smooth, quiet Class 1 assist
• Frame Construction: Alpha Gold Aluminum frame with tapered head tube, internal routing, UDH, Boost148 rear spacing, and 12mm thru axle
• Fork: SR Suntour XCM 34 air fork with lockout, Boost110, tapered steerer, and size-specific travel
• Drivetrain: Shimano CUES U4000 9-speed with LINKGLIDE LG300 11–46T cassette and LG500 chain for durability under e-bike loads
• Braking System: Tektro HD-M275 hydraulic discs with 203mm centerlock rotor for consistent stopping power
• Fit & Controls: Bontrager alloy cockpit with size-specific bar widths and stems plus Trek Line Comp lock-on grips for stable hand placement
• Dropper Post: TranzX JD-YSI34 internal routing dropper with 100mm (XS/S), 150mm (M/L), or 170mm (XL) travel
• Wheelset & Tires: Bontrager Connection double-wall rims with Bontrager Montrose Comp 2.40" tires sized 27.5" or 29" by frame size