Designed for closed-circuit racing, GBrakes Superbike Series brake line kits are the same product they've provided to most AMA pro teams for years: Direct thread-into-the-caliper brake lines. Every GBrakes stainless steel line is made with only DuPont™ virgin-grade PTFE inner core, 64-strand braid and GBrakes fittings are probably the most expensive, but highest quality you can find on the planet. Most of these kits feature two lines off of the master cylinder, and come complete with hardware, adapters, crush washers and bike-specific installation instructions. This is the line kit that will give you (tight lever) feel, but with (modulation) volume. Designed for closed-circuit racing due to its aggressive and powerful response. Superbike fittings and adapters come in silver only. Smoother more effective flow of brake fluid. Truly a 'two-finger' braking system.