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The Bilstein 8112 Zone Control coilovers represent a groundbreaking evolution in off-road suspension, offering a level of performance that effectively replaces traditional coilover, bypass, and bump stop systems in one compact unit. Using a proprietary three-piston design, these shocks provide five distinct damping zones (three for compression and two for rebound) each tuned to deliver unmatched control across all conditions. Bilstein's Jounce Cut-Off (JCO) and Rebound Cut-Off (RCO) systems ensure smooth transitions through extreme suspension events, while the high-flow digressive piston with directional bleed enables fully customizable compression and rebound curves. Unlike bypass shocks that divert oil flow, the 8112’s internal zones work with the main piston for consistent feel and superior performance. With dual-speed compression adjusters and a JCO adjuster offering meaningful fine-tuning, this shock allows precise setup for both daily driving and aggressive off-road use. Built for serious performance, it demands supporting structural upgrades and expert tuning, which our shop uniquely provides through extensive hands-on experience, in-house rebuilds, and custom valving tailored to each vehicle’s needs.