Cylinder Head Service Kit, 0.440″ In and 0.405″ Ex Lift, Honda®, CRF™ 450R / RX / WE, 2017-2020 # 30-33330

DescriptionKPMI® is proud to introduce full CYLINDER HEAD SERVICE KITS. These kits contain all items to completely refresh and upgrade cylinder heads for popular Dirt / MX and Side x Side models with KPMI’s top quality racing valvetrain components. Features: • Save time money on your next cylinder head rebuild • One package, everything you need for factory recommended valvetrain service • Double your service life over OEM using KPMI® Valvetrain products • Kitted with value added savingsKit Includes: • Dual Spring Titanium Retainer Valve Spring Kit, Which Allows for 0.440″ In. and 0.405″ Ex. Valve Lift • Top End Gasket Kit by Cometic • KPMI® C630 Bronze Standard Valve Guides • KPMI® S.S. and Inconel® White Diamond® Valves, Stock Head Dia.The product image may not be accurate on the page. Please refer to the description and specifications before purchasing.Installation InstructionsClick HereTypeIntake / ExhaustRetainer MaterialTitaniumIntake Valve Lift0.440″Intake Installed Height1.340″Intake Seat Pressure50#Intake Open Pressure162#Intake @ Lift0.440″Exhaust Valve Lift0.405″Exhaust Installed Height1.360″Exhaust Seat Pressure90#Exhaust Open Pressure220#Exhaust @ Lift0.405″Valve TypeIntake / ExhaustValve MaterialIntake- White Diamond® Stainless Exhaust- White Diamond® Inconel®CoatingHard ChromeIntake Head Diameter38.00mm / 1.496″Intake Stem Diameter0.1960″Intake Tulip20ºIntake Overall Length3.080″Exhaust Head Diameter31.00mm / 1.220″Exhaust Stem Diameter0.1955″Exhaust Tulip23ºExhaust Overall Length3.165″RemarksStandardGuide TypeIntake / ExhaustGuide MaterialC630 BronzeReferenceSee Figure 1Intake Outside Dia.: (G)0.4360″ / Std.Intake (A)0.535″Intake (B)0.535″Intake (C)0.590″Intake (D)0.670″Intake (E)0.433″Intake (F)0.1960″Exhaust Outside Dia.: (G)0.4360″ / Std.Exhaust (A)0.630″Exhaust (B)0.630″Exhaust (C)0.730″Exhaust (D)0.870″Exhaust (E)0.433″Exhaust (F)0.1955″