I have a 04 rx8 80k miles, recently hitting some issues with the 6 speed lost 1st gear a week after i was hit rear driver side right on the tire... 1st gear only works if i take off really slow or down shift but once i hit the gas a little it kicks it out no grinding just kicks it right out every-time all other gears work perfectly. The clutch pedal and a exedy stage 1 clutch kit were added a month before the accident... so i'm stumped

 

It's likely bad syncros in the tranny. You replaced the clutch pedal? Who installed the clutch?

 

both were installed by a mazda dealer

 

Check the forks.

 

what are forks?

 

what you eat with.

they are the shifter forks in the trans to select gears