Patch kit: Patch kits are easy to use, light and compact, and if you get more than one flat on a ride (it happens more than you’d expect), it can save you when you’ve already used your spare tube. Plus, on a rear wheel, patching a tube can be faster than replacing it, as you can often do this without removing the wheel at all. Another upcoming post is going to show you how to patch a tube.
Our favorite hand pump for commuters is the Lezyne Sport Drive HP, and you can read more specifics about why in our full-length guide, written by Dave Yasuda, a writer and tester with over 30 years in the saddle. To sum it up, Lezyne makes pumps with an extendable rubber tube that connects to your tire valve, and that’s the difference between awkward and demoralizing. It’s not the only company that does so, but it is one of the few, and it does it the best. The Sport Drive HP can adapt to any tire valve, has no small fussy parts to lose, and inflates more easily to higher psi levels than anything we tested without floor leverage.
Modern bottom brackets use a sealed bearing type construction that keeps water and debris locked out, so they seldom go wrong. Maintenance is impossible so they need replacing when they do wear out. Older style cup bottom brackets need to be re-greased every now and again, and occasionally will need to have their bearings replaced. There are a lot more teeth on the chainring cogs than those on the rear cassette, so need changing less regularly. Cranks usually a solid one piece construction so there is not much to go wrong.