Kent Kroeker, owner of KORE, is as meticulous as we are. He's never released a suspension system before it's perfect for him, which usually means it will be perfect for us. Kent worked very hard on coil rates and shock valving before releasing his JK suspension. The JK 4-inch KORE Technical Series suspension includes variable rate coils, KORE/Fox 2.0 Piggyback Reservoir shocks, Race Series track bar, Race Series swaybar end links, braided stainless/Kevlar brake lines, and Race Series bump stops. The KORE coils and shocks provide a controlled yet supple ride that needs to be experienced to be believed. KORE offers regular and heavy-duty coils and sent us both. We installed the regular rate coils first, then the HD ones. We found that the regular rate coils work well, even for modified JK's like ours. The HD coils would work well if doing long distance overlanding with a fully loaded/overloaded JK. Mount Logan talked us out of the KORE track bar for one of their projects we'll be covering, but we used everything else. Another example of KORE quality is the hollow aluminum front track bar end links. KORE has raised the JK quality and performance bar for the entire industry.