In the not-so-distant past, air compressors were a hefty bit of kit you kept in your shop only-weight made lugging them along for the ride prohibitive. The new Stop & Go Portable Mini-Air Compressor, though, measures only 4" x 2" x 6" so you can pack it onto most bikes. A built-in gauge displays increased pressure up to 120 psi, while an LED light indicates power status-and helps you connect to the tire valve after dark. To tap into your power source, you can use the enclosed cigarette lighter adapter, alligator clips to the battery cables, or go directly to the SAE power plug. The Mini Compressor retails for $ 34.95. For details see: www.stopngo.com or call 800 747-0238.