Get your brakes back to new with a complete master cylinder rebuild kit including a new piston piston seals spring rubber boots and circlip. Over time your piston and seals can wear allowing fluid to pass back from the line into the master cylinder reducing brake performance and feel. Built to meet or exceed OEM quality at an aftermarket price. Most aftermarket kits won't include a new piston but we don't cheap out there all kits include a brand new piston for the best braking your ride has had since new.OEM quality at an aftermarket priceIncludes master cylinder pistonRestores braking performance and feel to newSimple installation Fits: Suzuki DRZ400SM 2005-2009