For the Icon and Icon 2 is this light weight rear axle spool set.
The spool set can offer improved steering, direction change, acceleration and corner entry/off power stability.
When comparing to a ball (U8186) or gear differential (U8180), a spool is particularly effective in high grip conditions such as on carpet with foam or rubber tyres.
Supplied with a light weight carbon axle and 88T 64DP Spur.
This set can be used on other manufacturers cars, however, width spacing may need adjusting.