🚀 Upgrade Your Ride with Confidence! Includes 1 master cylinder and 2 brake light switches for all your needs. 90-day return policy for a hassle-free experience. 12.7mm piston hole diameter for optimal braking performance. Designed for easy setup, so you can hit the road faster. Fits most motorcycles and ATVs, ensuring you ride with confidence. 12.7mm piston Universal fit Easy install The MRELC 7/8" Left Hydraulic Brake Master Cylinder is a versatile and reliable component designed for a wide range of motorcycles and ATVs. With a 12.7mm piston hole diameter and universal compatibility, it ensures optimal braking performance. The package includes essential components for easy installation and a worry-free 90-day return policy, making it a smart choice for any rider.