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Cylinder Head Service Kit, 0.350" Lift, Honda®, CRF™ 150R, 2007-2023

Cylinder Head Service Kit, 0.350" Lift, Honda®, CRF™ 150R, 2007-2023


Regular price $451.49 USD
Regular price $451.49 USD Sale price $451.49 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 0.350" Valve Lift
  • Top End Gasket Kit by Cometic
  • KPMI® C630 Bronze Standard Valve Guides
  • KPMI® S.S. Black Diamond™ Valves, Stock Head Dia.

NOTE: It is important to use the valve stem seals, P/N 71014-4 included in the KPMI® labeled bags. These valve stem seals are designed for specific compatibility with the KPMI® spring kit. The COMETIC® gasket kit may contain additional valve stem seals, however these should NOT be used with the KPMI® spring kit and can be discarded.

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 0.350"
Installed Height 1.320"
Seat Pressure 45#
Open Pressure 143#
@ Lift 0.350"
Valve Type  Intake/ Exhaust
Valve Material Black Diamond™ Stainless
Coating Black Nitroneg
Intake Head Diameter 26.00mm / 1.024"
Intake Stem Diameter 0.1765"
Intake Tulip 19º
Intake Overall Length 3.065"
Exhaust Head Diameter 22.00mm / 0.886"
Exhaust Stem Diameter 0.1760"
Exhaust Tulip 19º
Exhaust Overall Length 3.145"
Remarks Standard
Guide Type Intake / Exhaust
Guide Material C630 Bronze
 Reference See Figure 1
Intake Outside Dia.: (G) 0.3566" / Std.
Intake (A) ---
Intake (B) 0.550"
Intake (C) 0.570"
Intake (D) 0.710"
Intake (E) ---
Intake (F) 0.1765"
Exhaust Outside Dia.: (G) 0.3966" / Std.
Exhaust (A) ---
Exhaust (B) 0.790"
Exhaust (C) 0.600"
Exhaust (D) 0.710"
Exhaust (E) ---
Exhaust (F) 0.1760"
Unique Identifier No. FR327789_01GAUSt
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