These fit handlebars up to 1.75 inches diameter and have the standard 17mm Nuvi ball common to the back of the cradles of all the Nuvi and Aera units as well some of the Streetpilots.


Fits many models including:
Garmin Nuvi 30, 40, 40LM, 42, 42LM, 44, 44LM, 50, 50LM, 52, 52LM, 54, 54LM, 200, 200W, 205, 205W, 250, 250W, 255, 255W, 260, 260W, 265T, 265WT, 275T, 370, 360, 350, 310, 300, 465T, 500, 550, 680, 670, 660, 650, 610, 600, 785T, 775T, 770, 765T, 760, 755T, 750, 885T, 880, 860, 855, 850, 1100, 1100LM, 1200, 1250, 1260T, 1300, 1350, 1350T, 1370T, 1390T, 1450, 1450LM, 1490T, 1690, 2200, 2250, 2250LT, 2300, 2300LM, 2350, 2350LMT, 2360LMT, 2370LT, 2450, 2450LM, 2450LMT, 2455LM, 2455LMT, 2460LM, 2460LMT, 2475LT, 2495LMT, 2555LT, 2555LMT, 2595LMT, 3450, 3450LM, 3450LMT, 3490LMT, 3590LMT, 3550LM, 3750, 3760T, 3790T
Garmin Streetpilot Models: c510, c530, c550, c580, i2, i3, i5
Garmin Zumo Models: 220, 400, 450, 500, 550, 660, 665 (Note for the Zumo, these fit the car cradle, not the bike cradle)
Garmin dezl Models: 560LT, 560LMT
Garmin Aera Models: 500, 510, 550, 560