This 4-piston brake caliper from Racing Boy has been fitted to Suzuki Shogun bike which is featured in the Malaysian Cub Prix Championship. This means that fitting 4-piston caliper is already enough for racing
Boy Racing 4-piston caliper fits very nicely with Racing Boy 300mm disc plate. As you can see from the picture above, the brake pad of 4-piston caliper 300mm disc holding plate and provide a good brake line features on the disk platter. Usually, the wrong fitment of caliper and disc plate will make the dish disk being gripped only by the outer side of the brake pad.
source from: motomalaya.blogspot.com