Unleash your potential with the proven process of the Trek Precision Fit system. You won’t believe what the proper fitment for a bicycle . A personal fitting experience will address your specific needs, giving you a tailor-made solution that will lead to countless hours of faster, more comfortable, and more enjoyable riding.
Check out a review of Trek Provision Fit at Tri Bike Run from AEROGEEKS and see more information below.
1. The Interview
The process starts with an interview to determine where you are as an athlete and where you want to go. There is a large difference between the fit you want for sprint distances (you’re on the bike for about 30 minutes) versus the fit you need to go a full 112 miles. Of course in both cases you’re always looking to stay aero for the entire ride, but we as athletes tend to be willing to suffer more over a shorter time period, thus allowing us to get much lower and more aero for a sprint distance event.
2. Physical Assessment
Part two is where the massage table comes into play. Once the interview is complete, it’s time for the physical assessment. The assessment checks your current body morphology across eight areas. Everything from your foot position to your stability is tested. There is nothing like having a tri coach cheer you on while doing a plank in front of an entire bike shop crowd!
As you can see in the images below, you are going to complete a number of tests for range of motion and flexibility. While we’ve been through plenty of fits, the Trek Precision Fit’s off-the-bike assessment definitely stands out.
3. Shoe Setup
Step three is shoe setup. When it comes to your shoes, a proper fit is about more than just cleat placement. It’s also about making sure the shoe properly fits your foot. This ended up being one of the most important parts of the entire fit process for Mike, leading to the addition of Giro X-Static insoles to his current shoes.
4. Starting Position
Next up was step four, setting up the fit bike (a licensed Purely Custom bike) with your current fit coordinates. For us this was a bit of a challenge since Mike’s primary test bike had been taken apart after the season as a number of product reviews ended and components were sent back. So instead, we based the initial setup on the guidance provided by the Trek Precision Fit.
5. Lower Body Setup
Trek breaks up the fit into a lower-body and upper-body setup. The lower body starts with your saddle selection. One of the more interesting tests you do as part of the physical assessment is a sit bone test. A pressure-activated board is used to determine where your sit bones are. The image below gives you an indication of Mike’s sit bones (so yes, we just asked you to look at an impression of Mike’s butt). Once the sit bone width is determined, a saddle can be selected. Now it was time to determine the saddle’s position relative to the bottom bracket. The fit bike allowed Rudy to easily adjust the saddle height and location (though this had to be adjusted manually versus some fit systems that can be adjusted remotely by the computer).
The Trek Precision Fit system uses a 2D motion capture system to determine your current position versus what it sees as the optimal position. It was during this process that Mike discovered his initial position was causing his knees to bow out. The solution ended up being a small modification to the Giro X-Static insoles to help keep his knees parallel with the bike. While this was a small change, it provided immediate results. The cameras also helped to hone in on getting the saddle position just right in order to optimize Mike’s leg and knee angles.
6. Upper Body Setup
Finally we were on to the upper-body setup. Here we determine the proper stem height and reach. And with a tri bike, you are also determining armrest width and position as well as extension length. For those buying their first tri bike, this is a great time to also try different extension shapes to see what you like best.
7. Review and Follow-Up
You’ll end your session with a detailed document that defines your fit and a follow-up appointment to guarantee your satisfaction.