Tell us what you ride and how it bothers you. We rank every upgrade by what it actually changes on your bike — and call out which ones to skip.
Make, model, year — or pick a close preset. We read the factory standards: freehub, bottom bracket, axle spacing, brake mount, headtube.
Each part is scored by what it changes on your ride and whether it even fits. Compatibility is checked against real component specs, not vibes.
Do this first, this is worth it, this can wait, skip this. Plus real parts at real retailers and a step-by-step install.
Every upgrade on a bike happens at one of these. Each has exactly one measurement that decides whether the part you want will physically fit — and it is almost never the one the product page shouts about.
Most "upgrade your bike" advice sells you a drivetrain. On a 2019 commuter, that money is better left in your pocket. We say so, with the numbers.