Whether you're restoring a classic British bike or fine-tuning a Japanese model

Blueing is caused by tuning characteristics

creating an efficient and durable hinge pin

solid aluminum risers feature finned riser clamps for a bit of added style

causing the slide to be loose

Seventies 1 inch Master Cylinder - Polished Aluminum Subcategory_Oil Pumps & Components Whether you're restoring a classicFeaturing a forged aluminum body, the Seventies line master cylinder by Kustom Tech in Italy comes in a polished aluminum body, lever, and cover held in place with two screws. The compact size and lever designed to fit your hand perfectly will give a very retro style look for all custom projects. It fits all 1" handlebars and has a 14 mm bore size. For use with DOT 4 or DOT 5 brake fluid. The included banjo bolt is 10mm x 1. 00.