Triple HS4 Carburetors BN7/BT7

H-Type Carburetors. BN1, BN2, Early BN4 BN1, BN2, Early BN4

Twin HD6 Carburetors Late BN4 To BN7/BT7 Late BN4 to BN7/BT7

HS6 Type Carburetors BJ7 BJ7

HD Type Carburetors BJ8 BJ8