
Repair Kit DRAG SPECIALTIES (ref. 87781) designed for the refurbishment of the rear brake master cylinder. This kit gathers the necessary wear parts to renew the sealing and hydraulic operation of your master cylinder, without making unverified technical claims — just the components required for serious and lasting maintenance.
Ideal for riders who maintain their roadster or rebuild a Sportster, this kit contains seals, rings, and a piston to replace worn components. By replacing the sealing parts and the piston, you restore lever travel and limit the risks of leaks or sponginess related to wear. Simple installation for a DIY motorcycle enthusiast accustomed to hydraulic maintenance, it fits the original rear master cylinder (check compatibility with your model before installation).
Common compatibility: Harley-Davidson Sportster (e.g. XL 1200 Forty-Eight, XL 1200V Seventy-Two, XL 1200C Sportster Custom 110th Anniversary). Suitable for demanding riders who prioritise safety and reliability during their interventions.