The Sprocket Brake Kit system is probably the most frequently seen brake combo system equipping the driveline of retro bikes. Originally created by Tolle in Sweden, it was refined by Exile Cycles who was the 1st one to re-introduce it in the US (many other brand versions are now available). The rear brake and final drive sprocket are combined into one great-looking unit, cleaning up the rear wheel completely (see here on my Bobber “Kiss My Wheels”. The polished stainless steel sprocket/rotor is coupled with a slick two-piston billet caliper, available in polished aluminum, black anodized or chrome. The kit comes complete with a frame tab and all the necessary mounting hardware. Exile Cycles.