Thats the tricky part, I've ran for 3 years on 550bhp and only broke 3rd and 4th gears for the first 2 years then nothing once we sorted out the cooling. When you fit a box like this it makes a 330bhp engine feel like 500+ as the grearing is perfect. This box alone took 3 seconds off my lap round Brands Hatch compaired to standard ratios.

I've said this before but this box transforms the car's perfomance without doubt one of the best mods I've ever done. The gear shifting is so sharp, with no need to use the clutch.

No sloppy gear changes with this selector