Rough Country - 5073.1 - CV Rear Drive Shaft for SA 3.5-6-inch or LA 2.5-6-inch Lifts for Jeep: 12-18 Wrangler Unlimited JK 4WD FEATURES: Collapsed Measurment: 4125-inches; Extended Measurment: 4475-inches; Eliminates contact between the stock drive shaft and oil pan on automatic transmission models; After lifting your Jeep JK Wrangler a CV (Double Cardan) drive shaft is a good choice to eliminate vibration issues and provide the longest lasting drive shaft; Includes Brute Force Red seals; Includes better quality CV joints; Shaft strength is twice as strong as the factory equipped drive shaft NOTES: Recommended on models with 3.5in - 6in of lift.; Does NOT fit 2-door models. KIT CONTENTS: Extended CV drive shaft, Flanges/Yokes, Hardware SPECS: SKU: 5073.1; SPECS: Est. Install Time: 2-3 hours FITMENT: 2012-2018 4WD Jeep JK Wrangler Unlimited (4-door); Does NOT fit 2-door models