03-08 SUZUKI LTZ400: KIBBLEWHITE VALVE SPRING KIT Kibblewhite uses only the highest quality materials for the valve springs and are precisely machined for the best possible fit and durability for your motorcycle or ATV. Kibblewhite valve springs come complete with lightweight racing titanium retainers, chrome silicon springs, steel collars, and keepers as required for one engine. The Kibblewhite valve spring kit is easy to install and helps reduces valve float in the high revving engines, adding durability and reliability to the engine.