Wilwood's 5/8†bore Left Hand Handlebar Master Cylinder is compact, lightweight and specifically designed for a variety of recreational, sport and outdoor equipment applications. Constructed of materials and finishes designed to resist corrosion, our master cylinder fits standard 7/8†diameter handlebars and is also available with matching R/H units. Impact resistant lever assembly comes with a three-position hydraulic parking brake lock. The housing is designed to accept a threaded brake light switch (1/4-32). The large capacity reservoir is translucent for easy fluid level viewing. The fluid inlet accepts an M10 x 1 thread, Banjo type fitting.