I have a set of GSXR750 forks on one of my 76GT750s and there is no way that it's period. It's not supposed to be. It's my bike and I basically know what I'm doing and can make a reasonable assessment of the risks. I can measure steering geometry and make a reasonable guess as to how it will handle. Better front brakes to me means even less reason to have a back brake weighing the back end down. They don't contribute much to braking except in the wet when they are a godsend.
As someone mentioned ealier a front end swap is not cheap. By the time you get forks and new rims and disks and capilers and brackets and spokes etc it can get quite pricey. Using the huge rims from a modern sportbike on a tiny twin is overkill and won't help handling much so new rims are probably going to be on the shopping list.
From my perspective, modern suspension can look good on a custom and after all we are building custom bikes not replicas of the sixties as a rule.
The big issue with fitting modern forks is not stem length or bearings or caliper brackets or any of the other details that still have to be worked out. It's steering geometry. That can bite if you get it wrong so take a lot of measurements before during and after and if it looks unsafe or the numbers are out of bounds, change it.
There are some seriously stupid and unsafe custom bikes around. Probably 75% are less effective as motorcycles than they were before the "builder " started so think twice and cut once. It's a fashion, yes, but that doesn't mean that we have to follow every stupid idea just because it's trendy.
The irony is that people used to ride cafe racers to be different now we build them to be the same sort of different as everyone else. Be original people. And be safe and have fun being creative.
As someone mentioned ealier a front end swap is not cheap. By the time you get forks and new rims and disks and capilers and brackets and spokes etc it can get quite pricey. Using the huge rims from a modern sportbike on a tiny twin is overkill and won't help handling much so new rims are probably going to be on the shopping list.
From my perspective, modern suspension can look good on a custom and after all we are building custom bikes not replicas of the sixties as a rule.
The big issue with fitting modern forks is not stem length or bearings or caliper brackets or any of the other details that still have to be worked out. It's steering geometry. That can bite if you get it wrong so take a lot of measurements before during and after and if it looks unsafe or the numbers are out of bounds, change it.
There are some seriously stupid and unsafe custom bikes around. Probably 75% are less effective as motorcycles than they were before the "builder " started so think twice and cut once. It's a fashion, yes, but that doesn't mean that we have to follow every stupid idea just because it's trendy.
The irony is that people used to ride cafe racers to be different now we build them to be the same sort of different as everyone else. Be original people. And be safe and have fun being creative.