

At the top of the lineup, the four SLR models switch to the lighter 700 series OCLV carbon and they also lose the fork mounting points. These are less expensive than the SLR models but also focused more squarely on bikepacking with additional fork mounts. All using the same 500 series OCLV carbon, the SL models have three builds. Serving as the entry-level models, the aluminium ALR frameset gives less expensive options with two builds before moving up to the carbon SL models.

Right now, there are 12 different models listed with three frames serving as the building blocks.

The Trek Checkpoint lineup is extensive to the point of confusion. There are metallic flakes throughout and a geometric pattern at the downtube and forks with a few details in a darker smoked red. In the case of the SL 6 eTap here, the only colour available is a deep red Crimson/Carbon Red Smoke that dips the bulk of the frame in a rich high-gloss blood red. The top-shelf SLR 6, 7, and 9 are where you'll find the most colour options while lower down the line the ALR and SL models have only one or two colours depending on the specific build. Like the design features, the aesthetics of the Checkpoint differ a bit throughout the lineup. Both models also have the option of fitting real mudguards and the Bontrager NCS Alloy Fender Set is one of best out there although there are also other options on our list of the best mudguards. Sticking to the SL models means there are also three extra mounting points on each side of the fork. While the SLR build gets the lighter 700 series OCLV carbon it also does with "only" the fourteen frame mounting points. The SL version of the Trek Checkpoints goes even farther with mounting options. That still leaves an extra pair of mounting points on the upper portion of the top tube for a bolt-on top tube pack. The Bontrager adventure frame pack, on our list of the best bikepacking bags, will attach to the frame without straps using these mounting points. If you aren't running frame bags that's room for an extra water bottle but there are also three mounting points under the top tube. There are two standard water bottle mounts, that one under the downtube, and an extra three mounting points higher up the downtube. The under-the-downtube water bottle mount is just the tip of the iceberg when it comes to mounting points.
