CRF450 Complete Valve Spring Kit APE introduces it's premium valve spring kit for the Honda CRF450R. This kit features their exclusive "Gold Stripe" valve springs. APE is a leading manufacturer of racing valve springs for the powersports industry. APE springs are world renowned in drag racing, road racing and endurance racing. This same expertise is used in the design and manufacturing of these new CRF springs. Manufactured from the finest super clean, chrome silicone  valve spring wire, for reliable, long life service. Exclusive titanium valve spring retainers are manufactured in APE's state of the art CNC facility, from premium aircraft grade Titanium. APE is the only company that manufactures titanium retainers and builds cylinder heads. We know what works and what doesn't. Kit includes spring bases. APE also does private label titanium retainer manufacturing. If you are a cylinder head shop with your own special retainer requirements, contact our engineering dept. LOOK FOR THE "GOLD STRIPE". CRF450R/X - #VSKH450  $149.95 CRF250R/X - VSH250 $159.95