Buying & sellingLatest
Sell Your Used Bike for What It's Worth: The File That Makes the Difference
Service history, invoices, signed certificate: prep your bike for resale and sell faster at the right price.
·6 min
The ChainLog blog
Maintenance, wear, resale. Practical guides to ride the same bike longer.
Maintenance5 min
Bike bolt torque specs: the chart so you never lose a bolt
Chainring, stem, calipers, pedals: how tight each bolt should be - and why a torque wrench and threadlocker beat guessing.
Maintenance6 min
Tracking bike component wear: gauge, app, Garmin or logbook?
Four ways to know when to replace your parts. Only one actually follows your bike.
MaintenanceTutorial8 min
Bike tire wear: when to replace and how to check tire age
Wear indicator, cracks, DOT code: a tire ages even sitting in the garage
MaintenanceTutorial6 min
Bike brake pad wear: when to replace and how to check
Disc or rim, minimum thickness, glazing: what to watch for
MaintenanceTutorial5 min
Bike cassette wear: when to replace and how to check
Hooked teeth, chain skip: what to watch for
MaintenanceTutorial6 min
How to check and replace your bike chain
Check wear and replace at the right time
Buying & sellingTutorial6 min
Buying a used bike without getting burned
What to check before you hand over the money
Maintenance3 min
The real cost of bike maintenance: we did the math
The budget most cyclists underestimate
Maintenance4 min
Is mileage enough to know when to replace your bike components?
Chain checker vs mileage tracking: do you really need both?
Buying & selling5 min
The bike digital passport is coming in 2027
Here's what it actually changes
Track component wear and sell your bike with confidence.