Copy of your coded black key for Yamaha T-MAX 125 250

black key insert with slot for adaptable transponder (chip)

compatible with Yamaha

Yamaha red key insert with transponder (chip) slot

Black key with Yamaha-compatible transponder

Yamaha blue coded key with transponder

Yamaha coded red key with transponder

Yamaha coded black key with transponder (original chip)

TMAX

XMAX