Essential tools
A compact chain tool, spare master link, the correct socket or wrench for sprocket hardware, gloves, and a few basic fasteners can solve small trail-side problems.
Trail readiness / drivetrain reliability
Carry a chain tool, master link, the correct wrench sizes for your bike, and a way to make a temporary safe fix. Zip ties can help as a short-term support item, but they are not a repair for a damaged drivetrain.
A compact chain tool, spare master link, the correct socket or wrench for sprocket hardware, gloves, and a few basic fasteners can solve small trail-side problems.
Use temporary support only to get home or to a recovery point. A loose chain or missing fastener is not a trail condition to ignore.
Stop riding if the chain is damaged, the sprocket is skipping badly, hardware is missing, or the bike cannot be kept safely aligned.
Contact the team if the same problem keeps returning, if the chain and sprocket combination looks incorrect, or if you want to verify fitment before the next ride.