Cylinder Head

Heavy Duty Cylinder Head Nuts Super heat treated cylinder head nuts are a must for high output engines. Help prevent blown and leaking head gaskets caused by the threads in the soft stock nuts stretching. APE nuts are machined from alloy steel and...

Cam Chain Tensioners APE manual cam chain tensioners are designed to replace the automatic and hydraulic tensioners on high performance engines. The automatic adjusters can back out when the throttle is closed suddenly at high rpm. This allows the cams...

Hayabusa Cam Bearings Hayabusa thru 2007. Uses stock clip.Single bearing available also - $22.50 Hayabusa 2008 & later. Comes with '08 bearing clip installed.Single bearing/clip available also - $31.00

Adjustable Cam Sprocket Assembly Unlock additional horsepower by timing your cams for optimal performance. APE adjustable cam sprockets press on the camshaft replacing the non-adjustable OEM sprockets. Offers unlimited adjustment. APE adjustable cam...

Hayabusa Titanium Retainers - Set of 16 APE valve spring retainers are machined from aircraft quality titanium bar stock in the APE plant on the latest state of the art computerized CNC machinery.CNC machining allows us to offer such advantages as bored...

Kawasaki High Performance Intake Valves Precision CNC Machined from a Stainless One Piece Forging for higher strength & durabilityHigh grade Alloy allowing the valve to withstand high heat and still maintain roundnessChromed Coating on all Stainless...

Kawasaki High Performance Exhaust Valves Precision CNC Machined from a Stainless One Piece Forging for higher strength & durability High grade Alloy allowing the valve to withstand high heat and still maintain roundness Chromed Coating on all...

Hayabusa 5mm Machined Valve Keepers Precision-​M​achined on a High Speed Swiss Screw Made from 1144 Aircraft-Quality Steel Valve Keepers Designed for High Performance Applications and High Tension Valve Springs Superior Performance Compared to...

Hayabusa Titanium Retainer Set Made from 6AL4V Titanium Engineered and tested to perform under the most extreme conditions Titanium retainers are the lightest in the industry Proven to have less valve bounce at high RPM without sacrificing...

Hayabusa High Performance Intake Valves Precision CNC Machined from a Stainless One Piece Forging for higher strength & durability High grade Alloy allowing the valve to withstand high heat and still maintain roundness Chromed Coating on all...

Hayabusa High Performance Exhaust Valves Precision CNC Machined from a Stainless One Piece Forging for higher strength & durability High grade Alloy allowing the valve to withstand high heat and still maintain roundness Chromed Coating on all...

GSX-R High Performance Intake Valves Precision CNC Machined from a Stainless One Piece Forging for higher strength & durability High grade Alloy allowing the valve to withstand high heat and still maintain roundness Chromed Coating on all...

GSX-R High Performance Exhaust Valves Precision CNC Machined from a Stainless One Piece Forging for higher strength & durability High grade Alloy allowing the valve to withstand high heat and still maintain roundness Chromed Coating on all...

Hayabusa High Performance Valve Springs Vance & Hines Raceshop Components High-Performance Hayabusa Valve Springs are designed with the latest advancements in valve spring technology. Our springs are nano-peened, polished and 100% inspected through...

Suzuki Hayabusa Tappets - Set of 8 Machined from solid EN40B Billet Lightweight Design Hardened Nitride Oversized 29.5mm available Upgraded DLC Coating available Sold in Sets of 8