Mild track setup (BC Racing ER)

Jhill

The 500 may even be better for mild track and mostly street as the 510 seem to focus on a heavily digressive setup. Typically from what I have seen is this usually involves a concave piston or ring shim setup with really large ports. This allows them to run a firmer low speed as the shims are preloaded and then open up and "blow off" for a high speed impact. This is great for chassis roll and stability but can be harsher over non smooth surfaces with ripple bumps that aren't big enough to force open the shims. So it's kind of a trade off, when I was researching I found that linear or just semi digressive is still more common in circle track and off road and you'll see a mix of it on bikes where some like the added support for brake dive but you do know it's a trade off in sensitivity. In fact for 2018 fox ditched their digressive shim stack for a linear setup and is getting the best comments for its suppleness vs others. So if your roads are like mine with lots of cracks and tar strips etc that firmer low speed may not be what you want.