MCS-911889 - Rick''s Motorsport Electrics offers this aftermarket Lithium Ion battery compatible rectifier-regulator for Kawasaki street bikes with OE# 21066-1008 or 21066-1027. A plug n play piece but Rick''s design has the following dimensions: 3" X 3.25" X 1" tall

Fitment:
Kawasaki: 79-80 KZ1000 LTD; 79-80 KZ1000A; 79-80 KZ1000B; 79-81 KZ1000C; 80 KZ1000C3 Police; 80 KZ1000D Z1R; 79-80 KZ1000E Shaft ST; 79-80 KZ1000G Classic; 79-80 KZ1000G3 Police; 80-82 KZ550A; 80-82 KZ550C LTD; 81 KZ550D GPZ; 82 KZ550H GPZ; 81-83 KZ650H C