1983 EX305A, 1983 on EX305B. A model has chain drive, B models are belt driven

Tyres:
GPz305 riders have plenty of choice when it comes to choosing tyres, with Bridgestone Battlax, Avon Roadrunners and Metzelers all receiving good/positive comments. Chen Shins were also mentioned.

Exhaust:
The Motad 2-1 system seems to be the one to go for "best bit on bike the finish really does last".

Other mods:
One owner reported that the belt drive system on his 305 had been converted to a chain set-up however he "…might change back".