Our Rear Zeta Ford SVT Raptor Shocks are a true 3.0” (inside and out), three tube External Bypass shock. These are far from the norm when compared to a traditional bypass shock you see on Trophy Trucks and other off-road race vehicles. Each bypass valve has a specific port design and individually equipped with a different spring rate to ensure proper performance at each zone of shock travel. These same bypass valves feature dampened valve stops for quiet and precise operation. That means no clicking noises as you hit bumps or road chatter driving down the road. The biggest difference in these shocks versus an industry standard bypass shock, are the “Easy-to-Adjust” knobs and the replaceable bypass tubes. The “Easy to Adjust” Hi Resolution Clicker Knobs do not require any tools for adjustment, and can be adjusted in seconds from plush off-road performance to firm on road manners for extra control while driving the mountains or towing a trailer. Another unique feature of this shock is the replaceable bypass tubes that can be swapped out during a standard rebuild if any damage were to occur, where a normal bypass shock body would need to be completely replaced, saving you hundreds of dollars. Installation Instructions