Yeah as Nat says, the 19 x 20 is a bit grabier but it feels awesome, the lever moves about 5mm and the braking just feels so solid! 19 x 18 might be a bit more forgiving if its for the road tho.
Without wishing to sound thick I have one on my Senna and it's revolutionized the braking, but for some reason the rear brake light doesn't work now. A bit annoying but luckily I have a friendly MOTer, but mates get a bit ****ed off when following. What can I do, anything easy?
Bostrom998, you need a pressure switch banjo bolt with a Brembo radial m/c (assuming you don't already have one). Does your brake light still work on the rear brake?