Like the Tin Man, bikes need to be properly lubed, or they’ll break down on long journeys and be carried away by flying monkeys. Take a riding companion to see the wizards of off-roading with today's Groupon to Buchika's Ski and Bike in Salem, NH. Choose between the following options:

• For $25, you get an expert ski tune-up (a $49.95 value).
• For $35, you get a standard bike tune-up (a $69 value).

The mechanical mavericks of Buchika's Ski and Bike dispense equipment, parts, and reparative services for two types of mountain travelers. Skis are spruced up with a professional tuning to ensure straight trajectories and turning performance, followed by a micro-jet disc treatment, which grinds down uneven surfaces to a sleek smoothness. Each snow-slicer is then hand waxed, allowing skis to ride effortlessly and pull double duty as mobile candles atop white-capped birthday cakes.

Patrons can whip pedal-powered hogs into shape with a standard bike checkup, beginning with an inspection and a tune of the shifting elements. Each of the dual wheels is then trued, a process that ensures a straight ride by hooking them up to a vehicular lie detector, followed by special attention to the brakes. Finally, the entire bike is cleaned, helping it to set a hygienic example for notoriously dirt-filled dirt trails.