Cylinder Head Service Kit, 0.395" In. and 0.370" Ex. Lift, Yamaha®, YZ™ 250F, 2014-'18 / WR™250F & YZ™ 250FX, 2014-'19
Cylinder Head Service Kit, 0.395" In. and 0.370" Ex. Lift, Yamaha®, YZ™ 250F, 2014-'18 / WR™250F & YZ™ 250FX, 2014-'19
SKU:80-82410
Regular price
$398.61 USD
Regular price
$398.61 USD
Sale price
$398.61 USD
Unit price
per
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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.
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 savings
Kit Includes:
- Dual Spring Titanium Retainer Spring Kit, Which Allows for 0.395" In. and 0.370" Ex. Valve Lift
- Top End Gasket Kit by Cometic
- KPMI® C674 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 |
| Intake Valve Lift | 0.395" |
| Intake Installed Height | 1.150" |
| Intake Seat Pressure | 55# |
| Intake Open Pressure | 151# |
| Intake @ Lift | 0.395" |
| Exhaust Valve Lift | 0.370" |
| Exhaust Installed Height | 1.100" |
| Exhaust Seat Pressure | 46# |
| Exhaust Open Pressure | 119# |
| Exhaust @ Lift | 0.370" |
| Valve Type |
Intake/ Exhaust |
| Valve Material | Black Diamond™ Stainless |
| Coating | Black Nitroneg |
| Intake Head Diameter | 31.00mm/ 1.220" |
| Intake Stem Diameter | 5.0mm/ 0.1962" |
| Intake Tulip | 18º |
| Intake Overall Length | 3.265" |
| Exhaust Head Diameter | 25.00mm/ 0.984" |
| Exhaust Stem Diameter | 4.5mm/ 0.1760" |
| Exhaust Tulip | 30º |
| Exhaust Overall Length | 3.235" |
| Remarks | Standard |
| Guide Type | Intake/ Exhaust |
| Guide Material | C674 Bronze |
| Reference | See Figure 1 |
| Intake Outside Dia.: (G) | 0.3957" (Std.) |
| Intake (A) | 0.350" |
| Intake (B) | 0.360" |
| Intake (C) | 0.535" |
| Intake (D) | 0.905" |
| Intake (E) | 0.430" |
| Intake (F) | 0.1962" |
| Exhaust Outside Dia.: (G) | 0.3563" (Std.) |
| Exhaust (A) | 0.330" |
| Exhaust (B) | 0.340" |
| Exhaust (C) | 0.615" |
| Exhaust (D) | 1.015" |
| Exhaust (E) | 0.391" |
| Exhaust (F) | 0.1760" |
| Unique Identifier No. | FR327789_01GAUSt |
