This is Conversion kit converts your AE TC6 or TC6.1 into a dual Bellcrank Steering, ultra narrow machine. The conversion kit includes: -Ultra Narrow 2.5mm Carbon Fiber Lower plate optimized for increased bulkhead flex. -Adjustable Carbon Fiber Lipo battery Braces -Transverse Servo Mounting bracket -Aluminum Dual Bellcranks -Stainless steel and aluminum hardware Read more and see photos of the conversion kit via the source link. Source: http://www.reflexracing.net/RSD6-Conversion-Kit-for-AE-TC6TC61-PRE-ORDER_p_1123.html