From race tech:
"We can definitely set it up your rear shock for you. The cost for the Sport Series conversion is $420.00 which will include Labor, Oil, Seal Head (required) Gold Valve Kit, Springs and Spacers. Valving and spring rates will be selected based on your ATV Setup, and rider info (weight, height, riding type and skill level). We will have your shock for 10 business days. Please let me know if you have any questions. Thanks "