Wear Sleeve Kits by Shock TherapyWhy Wear Sleeve Kits? If youve invested in high quality shocks, you understand the importance of keeping them in good working order. Shock bodies are particularly vulnerable to surface wear, especially under the stresses of off road use and environmental dangers. ALL SPRING PACKAGES, including from factory can cause abrasion and wear on the shock body. As the springs compress through the shock travel, combined with the off road elements such as dirt