The retractable tube is stored inside the body of the pump when not in use, and it can attach to either a Schrader or a Presta valve, the two types of valves you’ll see. Some pumps can accommodate only one type, making them less universal. Toggling between the two is simple, which can’t be said of other models with itty parts that require nerves of steel to handle on a good day, let alone while wearing gloves, crouching in the wind, oblivious to the sewer grate a few feet away.
Trek Bicycle Newington is your destination for the latest products from Trek and Bontrager, service and tune-ups for bikes of any brand, and local advice about the best riding in the area. We are proud advocates for the cycling community and we strive to give cyclists a great place to ride and learn. We host weekly road and recreational rides, women’s rides, and educational clinics aimed at getting more women on bikes. We also organize monthly mountain bike rides and sponsor several triathlon series in the area. Our store has been a community landmark since 1975, and we love seeing customers who bought their first bike with us coming back years later to get bikes for their kids. Whether you’ve been riding for years or want to try something new, we welcome you to stop in and meet our team!
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.