Mountain Bike Chain Routing. First, turn your bike upside down or place it in a bike rack. When fitting a new chain, or refitting your existing one, it is important to route it correctly.
Trek does not sell, trade, or rent your personal data to third parties. You need to know how many links your new chain needs to fit the bike. Get a new chain and a chain tool.
This information may be used for marketing purposes by Trek Bicycle, its subsidiaries, its affiliate Trek Travel LLC, and your local dealers.
Before routing the chain, inspect the chain side plates.
Well look no further than this instructional video on How To Put On Bike Chains. Use the gear shifters to align the rear derailleur over the smallest cog, the high gear, and the front derailleur over the smallest chain ring, the low gear. If the chain looks and sounds right then it's usually following the correct path on the rear derailleur.