The 2021 Trek Checkpoint ALR 5 Gravel Bike in Trek Black is the best value gravel bike in the Trek line-up. It's a high-quality build that will hold up for long, rugged miles on roads, dirt & even the most treacherous gravel. But what sets this model apart is the performance parts & the wealth of features like adjustable Stranglehold dropouts, massive tyre clearance & extra mounts that make it easy to customise for your kind of adventure. The Checkpoint ALR 5 is built around a 300 Series Alpha Aluminium frame with Stranglehold dropouts. These let you run the bike in different configurations including internal hub gears, derailleurs or single-speed. Thru-axles front & rear help keep everything stiff & the handling precise. Gearing comes from Shimano's gravel-specific 2x 11 GRX drive train with lower gears for grinding up hills or through rough gravel. The bike also comes with hydraulic disc brakes for all-condition stopping power & wide 700x 40c gravel tyres for added stability & traction. This bike is perfect for Gravel riders will love the amazing value build of this bike but the stranglehold dropouts, pannier mounts & multiple bottle cage mounts mean this bike can be easily customised into a commuter, tourer, adventure racer or bike packing platform.KEY FEATURESWith Checkpoint ALR 5, you're getting high-quality parts at exceptional value, which means you'll have extra dough for adventure travel This bike is exceedingly versatile & suited to a wide variety of riding styles, including gravel rides, bikepacking & daily commutes Massive tyre clearance means you can use tyres up to 45 c for extra traction & stability in any conditions Mounts on the seat tube & both sides of the down tube make it easy to carry extra gear & water The Stranglehold Dropout makes it easy to fine-tune your geometry or run Singlespeed