The FR2 Sport Edition 2-piston brake kit is a rear wheel sport brake system developed by Feizi FeccR. Adopting 7075 aviation aluminum integral forging process, it has a piston area of 26.4 cm ². Suitable for wheels over 17 inches. FR2 is also equipped with a quick release and replacement design, and can be optionally equipped with titanium alloy pistons. Combined with the front wheel racing kit, it enhances the braking power of the entire vehicle.