The kit comes with almost everything you need to convert your CRC Gen-XL.
All carbon fiber is 2.5mm quasi-isotropic
Includes: Main Chassis, Tweak Brace, Top Plate and Two Battery Brace/Shock Mounts (one for left mount battery, one for right).
SpeedMerchant Linear Tweak Spring set (all three - .18, .20, & .22)
Stand-offs, ball-studs and all the required hardware to complete the conversion.
*** You also need one CRC# 3340 - Low Profile Motor Pod - Gen-X to complete the kit. ***