Before I buy yet another brake master just to test, does anyone know the leverage ratio on modern Nissin front brake masters on dirt bikes, like off a Honda 450R? I'm working with a four piston caliper, my OEM Brembo off my KTM is a 10mm unit, 19mm lever ratio, and it's too soft. I've got an old style 11mm Nissin off my TT-R 125, lever ratio of about 21mm and it's road race firm. I'm hoping the newer 11mm units are a shorter lever ratio so I can find the magic Goldilocks in between master? The other option is KTM used a Brembo 11mm unit around 2002, that should be a 19mm lever ratio if I can find one...
Try this, it is a reprint of the old Vintage Brake page (now gone, sadly) on master cylinder to caliper ratios http://ducatimeccanica.com/brake_ratios.html
