  THE VALVE GUIDES INSTALLED AND REAMED THE 3 ANGLED VALVE SEATs ARE CUT PERFECTLY, AND READY TO ACCEPT THE INCLUDED 22MM EXHAUST AND 25MM INTAKE VALVES, WITH THE 5.5MM STEMs,, EXACTLY THE SAME AS EARLY CT70'S XL70 AND SL70'S TOOK.. LARGER INTAKE AND EXHAUST "PORTS" 21MM EX AND 24MM INTAKE MAKE THIS BREATH EASIER FOR BETTER PERFORMANCE THIS HEAD HAS SEALS ON BOTH VALVES, MOST ORIGINAL HEADS ONLY HAD ONE SEAL ON THE EXHAUST. BESIDES THE TWO NEW VALVES, WE ARE INCLUDING 2EA OUTTER VALVE SPRING SEATS (WASHERS), AS YOUR ORIGINAL HEAD DID NOT USE THEM, BUT YOU WILL NEED THEM WITH THE NEW STYLE VALVE GUIDES. THEN THE GUIDE SEALS AND CAPS. OTHERWISE ALL THE OTHER PARTS FROM YOUR OLD HEAD WILL TRANSFER TO THIS NEW HEAD FITS THE FOLLOWING MODELS -------------------------------------------------------------------------------- CT70_ALL_THRU_1981 ATC70_ALL TRX70_ALL SL70_XL70_CL70 PASSPORT_1980&81 C70M_C70K1 |