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Cylinder Head Service Kit, 0.465" Lift, Honda®, TRX™ 400X/ EX, 1999-2014

Cylinder Head Service Kit, 0.465" Lift, Honda®, TRX™ 400X/ EX, 1999-2014


Regular price $388.50 USD
Regular price $388.50 USD Sale price $388.50 USD
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California Prop 65

KPMI® 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.


  • 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 savings

Kit Includes:

  • Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.465" Valve Lift
  • Top End Gasket Kit by Cometic
  • KPMI® C630 Bronze Standard Valve Guides
  • KPMI® S.S. Black 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 Instructions Click Here
Type Intake/ Exhaust
Retainer Material Titanium 
Valve Lift 0.465"
Installed Height 1.375"
Seat Pressure 70#
Open Pressure 157#
@ Lift 0.300"
Valve Type  Intake/ Exhaust
Valve Material Black Diamond™ Stainless
Coating Black Nitroneg
Intake Head Diameter 33.00mm / 1.300"
Intake Stem Diameter 5.5mm / 0.2156"
Intake Tulip 20º
Intake Overall Length 4.040”
Exhaust Head Diameter 29.00mm / 1.142"
Exhaust Stem Diameter 5.5mm / 0.2150"
Exhaust Tulip 29º
Exhaust Overall Length 3.980”
Remarks Standard
Guide Type Intake / Exhaust
Guide Material C630 Bronze
Reference See Figure 1
Outside Dia.: (G) 0.3566" / Std.
(A) 0.550"
(B) 0.645"
(C) 1.020"
(D) 1.300"
(E) 0.715"
 (F) 0.2150"
Unique Identifier No. FR327789_01GAUSt
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