Brake And Clutch Line Kit. Stainless steel lines are typically the first upgrade you should make. Stock rubber lines will break down and expand, causing a spongy brake or clutch feel or worse. Steel lines eliminate expansion which results in consistent feel and performance. Aftermarket stainless steel lines may look similar, but they are not the same! 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. Brake and Clutch line kit - front and rear brake lines and clutch line included. These are the same fittings that Ferrari, Lamborghini and Ducati uses, among a few other high end O.E.M.'s. Kits are bike-specific and are tailored to each bike for perfect fit and finish. Pre-positioned banjo fittings.