Cylinder Head Service Kit, 0.385″ Lift, Honda®, CRF™ 250R, 2010-2015 # 30-33310


1 in stock (can be backordered)


Part # 30-33310

  • Cylinder Head Service Kit

1 in stock (can be backordered)


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 0.385″ 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 0.385″
Installed Height 1.185″
Seat Pressure 50#
Open Pressure 160#
@ Lift 0.385″
Valve Type Intake/ Exhaust
Valve Material Black Diamond™ Stainless
Coating Black Nitroneg
Intake Head Diameter 30.50mm / 1.201″
Intake Stem Diameter 5.0mm / 0.1961″
Intake Tulip 20º
Intake Overall Length 3.500″
Exhaust Head Diameter 25.00mm / 0.984″
Exhaust Stem Diameter 4.5mm / 0.1760″
Exhaust Tulip 20º
Exhaust Overall Length 3.310″
Remarks Standard
Guide Type Intake / Exhaust
Guide Material C630 Bronze
Intake Reference See Figure 1
Intake Outside Dia.: (G) 0.3965″ / Std.
Intake (A) 0.610″
Intake (B) 0.610″
Intake (C) 0.745″
Intake (D) 0.965″
Intake (E) 0.394″
Intake (F) 0.1961″
Exhaust Reference See Figure 2
Exhaust Outside Dia.: (G) 0.3965″ / Std.
Exhaust (A) 0.820″
Exhaust (B) 0.820″
Exhaust (C) 0.650″
Exhaust (D) 0.770″
Exhaust (E) 0.394″
Exhaust (F) 0.1760″
Unique Identifier No. FR327789_01GAUSt

Additional information

Weight .5 kg
Dimensions 22 × 16 × 5 cm


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