Psychic Products XU-09528IK Psychic Intake Valve Kit

KIT FEATURES:
• All kits sold with valve, spring, retainer, seat to do complete replacement of either intake or exhaust side
• All components are manufactured under iso 9001 certified factories
• Nitride coated components to improve heat transer & carbon buildup for increased valve train life
VALVE FEATURES:
• Forged one-piece construction to help with weight reduction & improved flow
• Performance valves receive a swirl polish, smooth stem treatment, and are made of 21-2n/suh35ht stainless steel
SPRING FEATURES:
• Springs are made of swosc-v material (oil-tempered steel wire)
• Some springs fearture a progressive style design with more coils on one end of the spring
• Progressive springs are heavier on one end and should always be installed towards the bottom
• Non-progressive springs are paint marked and should be installed towards the top
SEATS & RETAINERS:
• Made from 4041 steel (select applications use 707546 aluminum)
• Designed to work with psychic stainless steel valves and springs