SUMMARY Marlin 5 is a trail-worthy daily rider that's perfectly suited for everyday adventures, on and off the trail. Condition is Used. I'll buy some 2.5 minions and see if they work. Fantastic bike in excellent condition barely used over last two years. Trek Marlin 5 2018 Mountain Bike Quality Score – 93%. 3 years ago. Marlin 5 is characterized by an excellent off-road-ready aluminum frame, cushy front suspension, burly wheels and tires, hydraulic disc brakes and a lot more. Collection in person only. Trek Marlin 5 2018 29er. Related Products. 17.5” frame (see photo) No flaws, couple of very minor marks Trek Marlin 4 2018 Mountain Bike $250.00. Trek Marlin 5 Quick Overview. The Marlin 5 has 27.5″ / 29″ wheels and higher gearing, while the Roscoe 8 has a dropper post, 27.5″ wheels, much better components, a better fork, and a bigger fork. The Trek Marlin 5 and Roscoe 8 are both aluminum frame hardtail mountain bikes. Trek Marlin 5 2017 Mountain Bike $231.00. With a quality score of 9.3, Trek Marlin 5 2018 Mountain Bike features as one of the highest ranking products in the Cycling category. It’s one of the best-valued models from the Marlin series, offering multiple improvements compared to the lower-priced Marlin 4. Trek Marlin 7 2016 Mountain Bike $263.00. Click the button below to add the Trek Marlin 5 2018 Mountain Bike to your wish list. Marlin 5 2018. I was thinking the same thing, but I've never seen anyone with that setup.. This score is reached from a combination of product testing, customer reviews, expert reviews, brand reputation and 3rd party product tests. Trek Marlin 6 2018 Mountain Bike $324.00.