Originally, only the most well-to-do members of society could afford bicycles, a fact they openly flaunted by outfitting spokes with rare Andrew Carnegie rookie-year trading cards. Take back the streets with today's Groupon: for $25, you get $50 worth of biking accessories, rentals, and tune-ups at Summit Bicycles, valid at the Burlingame and Los Gatos locations.

Summit Bicycles keeps cycling enthusiasts rolling with top-notch tune-ups and shelves chock-full of quality gear and accessories. Patrons can keep cycles road-ready with maintenance services performed by Summit's capable technicians, some of whom have more than 15 years of experience servicing bicycles. The shop's bike geniuses know how to make a rust-riddled beater ride as smoothly as a hoverboard, as they adjust derailleurs and brakes, provide much-needed lubrication, and perform a thorough safety check during express tune-ups ($49.99). A full-service tune-up nets worthy rides extra attention as the experienced techs perform additional services such as a wheel truing and headset adjustment ($90). Whether customers purchased their bike from Summit or not, they know how to make it a well-oiled, city-cruising machine that will never burst into flames for no reason.

Bikers can illuminate nighttime rides with lights starting at $11.99 or effectively restrain two-wheelers during moonlit were-segway transformations with a secure lock ($19.99+). Alternatively, equip craniums with stylish protection under one of Summit's selection of helmets ($45+). The Cartesian centaur emporium also maintains a healthy stock of road and mountain bikes from brands such as Trek and Fisher for those seeking new steeds. For temporary transportation, riders can avail themselves of one of the shop's rental bikes ($40/day).