The LoneStar Racing DC-6 Shock Linkage for the Honda TRX450R and TRX450ER is designed to work with the stock 2006 & up swing arms or the Lone Star swing arm. It is designed to reduce the shock kick by changing the leverage ratio for smoother shock motion. It also allows for a longer shock for better valving and spring ratios. An aftermarket shock is required for proper performance.
MX - Use a 16 3/8 long shock. 2.44 to 1 leverage ratio.
XC - Use a 16 1/8 long shock. 2.36 to 1 leverage ratio.