Improve the performance of your Jeep Wrangler JK's suspension system with this Rancho front control arm bushing kit. Made of durable polyurethane for long life, it has damping qualities that reduce noise, vibration and harshness. Product Features:COMPATIBILITY -- Replacement bushing for Rancho RS66155B upper front adjustable control arm that fits the Jeep Wrangler JKQUIET PERFORMANCE -- Firmer inner bearing material and softer outer material improves damping qualities to reduce noise, vibration and harshnessMAINTENANCE-FREE BUSHINGS -- Features Rancho's D2 high-articulation, grease-free, self-centering bushings that have a PTFE liner in the internal bushing that serves as a lubricating agent for long-lasting, maintenance-free operationENGINEERED TO LAST -- Made of durable polyurethane for long life