GT Thunder Linkage MX 06-003 The sport quads that GT Thunder builds these linkages for suffer from leverage ratio curves that are too aggessive, causing a spike in the suspension as the quad gets further down into the suspension travel.This results in a harsh ride when ridden in rough terrain Gain additional wheel travel by using improved leverage ratios Plusher ride while still maintaining good bottoming resistance Lower center of gravity Improved stabillity for better overall handling