Nexx Racing's Optional/Replacement LCG (Lower Center of Gravity,CNC'd 7075 Swiss Aluminum LM Motor Mounts 102mm for ROUND MOTORS ONLY* adds + 4mmwidth to the rear track for more stability, NX-185 LM differential recommended, Not included. Includes: anodized damper post, carbon fiber top motor plate, #5 carbon fiber "T"-plate, and adjustable, ride height Concentrix bearing carriers, comes fully assembled! Add "Bling" and Zing to your MR03 or PN2,5 chassis. Quick and easy installation.