Trek Marlin 4 Gen 3 Bike

Marlin comes in seven available frame sizes to suit riders of any height, and Smart Wheel Size ensures you’re on the fastest wheel that fits. The smallest sizes even come with short-reach brake levers and narrower handlebars that give smaller riders better comfort and control.

Marlin looks and feels great. It’s packed with features usually found only on more expensive bikes, like a stylish frame with internal shift cable and brake hose routing, which can help your cables last longer by protecting them from the elements.

Smaller frames (XS/S sizes) feature a top tube that dips down as it approaches the seat tube. This design makes for a lower standover height, which is favourable for shorter riders to straddle their bike more easily.

Starting in 2024, Trek began removing high-emission aluminum from their manufacturing and replacing it with low-emission aluminum made with renewable energy. By October 2025, nearly every alloy bike Trek makes - this one included - has made the switch, driving a major drop in Trek's footprint.

Inspired by rider demand for trouble-free drivetrain longevity and performance, Shimano CUES offers a new foundation for versatility and durability across a range of both electric and standard bikes. CUES features Shimano’s new LINKGLIDE drivetrain technology for significantly increased life on wear items like chain, cassette, and chainrings.

LINKGLIDE technology has been specifically engineered for incredible durability while still delivering smooth and decisive shifting – along with a great pedalling experience. Available exclusively on Shimano CUES drivetrains.

Pedals are two of the five touchpoints that connect you with your bike, and even though this bike comes with a pair, upgrading to pedals that boost control and grip will greatly improve your ride. Swap the included pedals with ones that fit your riding style. We recommend flat pedals for simple versatility.