Great Planes GPMG1265 Brushless Motor Mount XL Motors This is the Great Planes ElectriFly Power System Brushless Motor Mount. This attaches to the firewall and the electric motor attaches to this mount. 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 REQUIREMENTS Mounting to the firewall and attaching the motor SPECIFICATIONS Length: 2.53" (64mm) Width: 2.18" (55mm) Height: 2.18" (55mm) Weight: 2.3oz (81g) Mounting hole dimensions: 1.325" x 1.325" (33.65 x 33.65mm)