This video I made shows how to swap the factory .75 ratio 5th gear set on your 04-09 Mazda 3 with a higher .71 ratio set. This will lower engine RPM by about…
This video I made shows how to swap the factory .75 ratio 5th gear set on your 04-09 Mazda 3 with a higher .71 ratio set. This will lower engine RPM by about…
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