Modern day sportsbikes are equipped with radial braking calipers from the likes of Nissin or Tokico and leave little to be desired. But what if you do in fact desire more? More stopping power, more feel, more feedback.. more awesome? A pair of Brembo M4 monoblock radial brake calipers might just be the answer! Designed for very spirited street riders who do not shy away from taking their bike to a track day every once in a while. The monoblock design means increased rigidity resulting in improved braking power and feedback. Please note: The Brembo M4 calipers were designed to work best together with a Brembo 19 RCS brake master cylinder. These brake calipers come in two sizes: 100 mm and 108 mm. As a rule of thumb, 100 mm should fit all European brand bikes with radial calipers and the 108 mm should fit all Japanese brand bikes (excluding Yamaha R1 bikes with 6-pot calipers). But to make sure, always check the center-to-center measurements of the fixing points on your own bike! You can also use the Brembo Brake Configurator (http://www.moto.brembo.com) to see which products fit your bike. You might also need a Brembo Caliper Spacer Kit to ensure the caliper lines up correctly. This usually happens if you\'re running larger diameter disc brakes but some bikes need the spacers in any case. Please refer to this document to see if and which spacer kit you need: Brembo Brake Caliper Spacer Kit chart (https://www.chromeburner.com/media/Brembo_Caliper_Spacer_Kit_part_numbers.pdf) These brake calipers come with a pair of sintered Brembo Z04 brake pads included! Please note that these Brembo Brake Calipers are meant to be used with 2 separate brake lines, one to each caliper. Please also check if the angle of the fittings of your current brake lines will match these brake calipers. If they are angled too differently, you may need to invest in a new set of brake lines to match.