HOME RACING NEWS USED PARTS TOUR TECH AND SPECS CONTACT US STAINLESS STEEL VALVES - APE is a leading supplier of high performance and racing valves for motorcycles. APE stainless steel valves are precision manufactured from aircraft quality Inconel based stainless steel. This special material offers excellent resistance to heat and distortion. APE stainless steel valves are designed to be used in the most extreme racing applications including the use of exotic fuels, or will give many miles of trouble free street use. They present an outstanding value. In most cases you can upgrade to APE stainless steel valves for less than the cost of replacement stock valves. All stainless steel valves feature hard chrome stems for extra long stem to guide life. VALVE GUIDES - ROCKERS - SEALS - ADJUSTERS BRONZE VALVE SEATS CYLINDER HEADS VALVE SPRINGS - RETAINERS - TAPPETS GS1000 8 VALVE 1978-1981 ($44.95 ea.) 98500 Intake 40 mm 2MM Oversize 98501 Exhaust 33 mm 1MM Oversize GS1100/1150 4 VALVE - 1982-86 (Finished - $27.95 ea. / Blank - $27.95 ea. / Top Fuel Alloy - $44.95 ea.) 98005 Intake 28.5 mm Max 1100 stock seats 980033 Intake 29.5 mm Max 1150 stock seats 98006* Intake 31 mm   980032* Intake 32 mm Seats must be moved. 98047* Intake 34 mm Blank 98007 Exhaust 24 mm 1mm oversize for 1100 and 1150 98008* Exhaust 26 mm . 980039* Exhaust 27 mm . 980041* Exhaust 29 mm Top Fuel Alloy 98328* Exhaust 30 mm Top Fuel Alloy * OVERSIZE SEATS REQUIRED BLANK STEM STAINLESS STEEL AND TITANIUM VALVES AVAILABLE FOR CUSTOM APPLICATIONS VALVE TRAY Ideal for engine builders. Perfect for organizing valves when the cylinder head is being worked on. Read more and order online here.