Rear Brake Master Cylinder

76 products

Rear Brake Master Cylinder options for Harley-Davidson cover both genuine-style replacements and custom upgrades, supplied by Iron City Motorcycles, an authorised Harley-Davidson dealer in Leeds. With parts from respected names such as Zodiac, Kustom Tech and Joker Machine, this range suits Harley-Davidson families including Touring, Sportster, Dyna and big-twin models. The rear master cylinder converts pedal pressure into hydraulic braking force, so a worn or leaking unit directly affects how confidently your bike stops — replacing or upgrading it restores firm, predictable pedal feel. Custom and billet options also let you tidy the look of your foot controls while improving function, a popular choice on bobber and custom builds. Because bore size and mounting vary by model and year, matching the correct master cylinder to your machine is essential. Our team can help you select the right unit. Browse the full range below.