Finally got my license for my bike so I can ride with the girlfriend finally. So does anybody know if the rear suspension on my 90 CBR is adjustable so that it doesn't sag as much with the extra weight. Also any easy extra power address already has a Vance and hones pipe on it feels underpowered with her on the back and she's small

 

The preload on the shock is adjustable with a spanner wrench and the rebound is also adjustable with the small **** on the bottom. Cranking up the preload will help the rear from sagging when riding 2 up. There should be some info in the service manual for properly setting up the shock.

Shorter gearing will help with acceleration, -1 front and +2 rear is a good compromise between acceleration and top speed. Upgraded air filter, factory pro ignition advancer, and the proper jet kit for the intake/exhaust mods will help make some extra power. Also properly tuning and syncing the carbs and performing all the maintenance/tune up work should help pick up some power as well.