As summer spreads like spilled gravy over the land, hibernating bicycles slowly awaken and emerge from the undergrowth, shy and stiff with sleep. Help your own bicycle bosom buddy to rise and shine with today's Groupon: for $20, you get $40 worth of cycling merchandise or services at BioWheels in Madeira.

A sponsor of many bicycle races including the Madeira Centennial Criterion, BioWheels also extolls environmental awareness and the personal benefits of two-wheeled commuting with expert mechanics and high-quality cycling equipment. Tune up forlorn frames and angular wheels with the Mavic Ksyrium Equipe road wheelset, a lightweight, stiff, and totally circular set of tires designed with speed and function in mind ($368). Swift stops come easy with the SwissStop GHPII brake pads due to complex compounds and rim-crud channeling that increase friction for easier stopping action ($36). The WTB Speed She saddle and its flex-tuned shell grant ladies a regal ride more effectively than replacing the standard metal-pole seat with St. Edward's Chair ($50). The Kinetic Rock 'n Roll trainer brings outdoor hill rides inside with its resistance unit and realistically swaying seat, adding verisimilitude to the living-room racer ($670). The bicycle gurus mine their gear-based expertise to repair broken-down penny-farthings and perform fitting services ($150) to guarantee safe, comfortable contact on the pedals, saddle, and handlebars.