5" Rail Motor Mount, for Seaking 56113 or Ten Shock 2880 Motor with 6 bolt pattern.Designed to speed up the swamping of a motor during a race or if you are just tired of trying to remove the front screws on your motor for maintenance. The rear motor clamp uses a rubber O-ring to stabilize the motor, allowing motors with slight diameter variations to fit in the same clamp. Once the coupler is loosened, the motor can be removed in less than a minute. Usually, racers have to remove the front screws, which can take a few minutes, and, more importantly, once a motor is removed from a conventional mount, the motor angle must be realigned. With only 4 screws, the motor is removed while keeping the motor angle intact. Also features clear access to the front motor vents to allow maximum cooling. Specs: Aluminum CNC motor brackets. Width: 5" (approx 127mm) Motor mounting hole: For 4mm screws Motor hole spacing: 30mm on center Motor applications: Seaking 54113 Motor (54mm diameter) and TenShock 2880 Motor (53mm diameter). Requires: m4 Motor mounting screws. The mounting plate is 5mm thick. Typically, a 10mm long screw can be used. Make sure to use a short enough screw so it doesn't hit the windings. Includes: - Mount shown in picture 1 - 5mm diameter mounting screws for mounting to your rails - (1) o-ring 4mm wide x 52mm od pn# 9262k823