JRi Shocks understands the extreme, unique demands of drag racing. After in depth research and development, the JRi Drag Race Development Team custom designed and built the highest performing shocks and struts on the market. JRi drag shocks feature several variations from its most popular & successful double adjustable to its high end air assisted 4-way adjustable shock. The 4-way adjustable shock offers high/low speed compression adjustment and high/low speed rebound adjustment available with air assisted rebound for tire control.