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 GPMG1101 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 any / brand of motor / 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 / / SPECS: Length: 3.56" (90.5mm) / Width: 3.09" (18.5mm) / Height: 2.56" (90.5mm) / Weight: 5.1oz (145g) / Mounting hole dimensions: 1.94"x1.94"(49.3x49.3mm) / / rmb 12-20-06 / ir/jxs