Wilwood Disc Brakes has issued a recall for certain 7/8-inch-bore tandem master cylinders due to a manufacturing defect. The recall is specific to these part numbers:
261-13271 (with proportioning valve)
261-13272 (with proportioning valve)
The cylinders are come in different finishes, indicated by a suffix, such as BK (plain black) or P (ball burnished). These parts were distributed between January 2, 2006 and October 31, 2016. Affected customer must contact Wilwood directly to obtain a replacement. Contact them at: (805) 384-2270 7:30 a.m. to 4:30 p.m. PST, Mon-Fri or email email@example.com
For full details of the recall head on over to http://www.wilwood.com/Pdf/Recalls/RDCONL-17E030-0986.pdf.