Wilwoods tandem chamber master cylinders are fully machined from a High-pressure die casting of a premium alloy, it incorporates slotted mounting flange to accommodate mount centers between 3.22" to 3.40" and also features side-hole mounts on 6.40" centers. Master cylinder is has full separation between the front and rear chambers . Dual outlets allow for right or left hand plumbing based on mount location. Offers a total piston stroke of 1.10 and a 2:1 volume ratio between the primary and secondary chambers. Available in 7/8, 1" or 1-1/8" bore sizes. Available also in a media burnished version and a black E-coat finished units.