Yamaha FZR 400/600 hybrid engine mounts
One pair of engine mounting plates to fit the FZR600R 4JH or YZF600R Thundercat 4TV engine into the FZR400RR 3TJ/4DX chassis. They are CNC machined from 8mm 6082-T6 aluminium and align the engine correctly. They do require that 5mm is removed from the inside of the 3TJ frame mount and 5mm from the engine/frame bosses which takes 10-15 minutes with a hacksaw at most but ensures the engine is mounted straight.
4 titanium countersunk M10 x 1.25 x 25mm bolts are supplied to fit the plates to the engine.
Simple instructions will be provided but are by no means exhaustive, they're simply a guide to lining up the engine in the frame.