Find A Dealer HELIX 12 CHIRP MEGA SI+ GPS G4N INC NAV CARD$4,229.00 Find A Dealer HELIX 12 CHIRP MEGA SI+ GPS G4N$3,999.00 Find A Dealer HELIX 12 CHIRP MEGA DI+ GPS G4N$3,599.00 Find A Dealer HELIX 12 CHIRP MEGA DI+ GPS G4N CHO$3,499.00