Suzuki did not build anything like the atc250r, the tri z or the tecate, but there were suzuki race trikes. The race trikes used custom aftermarket frames and dirtbike engines, but, there were suzuki race trikes. Not many though.
Nicholson 500x (Project)
Nicholson 185s
Nicholson 110 (That takes an atc70 tank)
Ascott 500 head/350x (Project)
Homebuilt Racer Chromoly Suspension 110 (Ragin Runt)
PK Racing Suspension 70
A+ Inc Suspension 70
AWS Aluminum 90 frame
Hi Performance ATC Suspension frame rd350
Hi Performance ATC Suspension frame 90