Jan 04, 2007 · When a master or slave cylinder goes bad it’s because of wear in the bore. The anodizing wears out and leaves a rough spot in the bore. That spot accelerates the wear on the rubber O-ring. You can hone the cylinder out, but when you do that you’ll enlarge the size of the bore. The O-ring seals only come in standard sizes.
Think of it as a lever and a fulcrum, take a small bite with the end of the lever and you can move the weight easily, but a short distance (small master cylinder, large caliper piston), take a big bite with the lever and it's hard to move, but you move the weight a longer distance (bigger master cylinder).
Accutronix Night Series Custom Rear Master Cylinder Assembly $ 213.32. Options: Universal Fit Biker's Choice Rear Master Cylinder $ 89.50 – $ 132.73.
Kelsey-Hayes Type Master Cylinder for Harley Davidson REAR Brake 3/4" Bore - £74.65 Replacement reproduction for Harley Davidson FX & Sportster models Quantity : at £ 74.65 each Out of Stock
Big Bore FJ80 Brake Master Cylinder | Marlin Crawler, Inc. On 1979-1985 Trucks and 4Runners the smaller factory bore works fine with stock, solid front rotors and 8" rear drums. If you upgrade the rear to larger 1986 and up, 10" drums and/or upgrade the front to a vented style caliper you will want to...
Rear Master Cylinder Covers. The super clean, one-piece design covers everything - even the small related components. Simple, quick installation uses only two fasteners.
Aug 02, 2012 · Correct, bore = diameter of the master cylinder and piston. Bigger the bore the larger the VOLUME of fluid moved per stroke. Pressure is determined by the lever and its leverage ratio. At a very basic level if I had a single disc front end with single piston caliper I would need a relatively small bore master cylinder.