Great Planes Brushless Motor Mount XL Motors FEATURES: Direct replacement for the Great Planes 1.20-1.80 cu in (20-30cc) glow mount. Perfect fit for 63mm RimFire Outrunner motors.* Universal motor mounting bolt pattern insures an easy fit with many brands of motors. Lightweight aluminum construction for added durability. Unlimited adjustability from 3.5-4.6 (89-117mm).;INCLUDES: One motor support for extra large motors. All assembly hardware.;REQUIRES: Mounting to the firewall and attaching the motor.