Great Planes Brushless Motor Mount Medium Motors FEATURES: Direct replacement for the Great Planes GPMG1041 .20-.48 (3.3-7.9cc) and GPMG1061 .40-.70 (6-11cc) glow mounts. Perfect fit for both 35mm RimFire Out-runner 28mm Ammo In-runner motors. Universal motor mounting bolt pattern insures an easy fit with many brands of motors. Lightweight aluminum construction for added durability. Unlimited adjustability from 2.1 - 3.1 (56 - 78mm). For medium motors.;INCLUDES: One motor support for medium motors. All assembly hardware.;REQUIRES: Mounting to the firewall and attaching the motor.