In an effort to keep spring arch to a minimum - remember that reduced arch improves ride quality - we use our superb riding 8" lift Select Series front springs with our 2" lift spring hanger / shackle system. 7" replacement rear springs and lift blocks raise the rear. The same areas that we address in our 8" system (steering and track bar geometry, shock length, etc.) are addressed in the 10" lift system, and then some. The 10" system also includes longer Bulletproof front brake hoses, our adjustable track-bar for precise bar "phasing", and rear dual shock brackets (the extra pair of rear shocks are ordered separately). The 10" lift includes your choice (2 front / 2 rear) of either standard Superide shocks or Select Series monotube gas-charged shocks by Bilstein. An optional dual front shock system is available. A Select Series spring, because of the increased overall pack thickness, requires less arch to provide a given lift height. This reduced arch generates less friction between the individual leafs. Anti-friction pads, placed between each leaf, further reduce inter-leaf friction, which in turn, improves ride quality. How much compression travel is allowed, and how abruptly this downward travel is stopped, is another important factor in the ride quality equation. With most manufacturers, compression travel management is not a serious consideration, if it is considered at all; not so with Superlift... the correct amount of travel, properly dampened by a new Urethane stop, has been calculated for each Superide Select system. For each lift height we have designed springs for both the gas V-8 engines and the heavier diesel Powerstroke and V- 10 applications; no "one-rate-fits all" mentality here. All of the Superide Select springs also feature military spring wraps (double-wrapped eyes) for enhanced safety and factory-style rubber bushings for superior durability. In summary, the Superide Select series springs are by far the best-riding and most durable leaf springs on the market. The remaining lift components are top-grade as well making the Select series systems as good as it gets.