The Composite C-hubs with 6° caster was in fact particularly developed the GT on-road platform. After significant tests of several caster perspectives, the final 6°caster was in fact opted for because the best option to get leads to the number of racing conditions bought at GT occasions. The C-hub geometry significantly improves steering traits throughout the previous 16° hubs. The reduced caster angle in addition helps reduce tire wear, creating more constant maneuvering during longer primary tasks. Use with #352289 C-hub 6° Left. Fits both GTX and GTXE.