Cometic 98-02 Yamaha YZ400/426F 95MM Top End Kit
Cometic 98-02 Yamaha YZ400/426F 95MM Top End Kit
Description
IMPORTANT NOTICE: Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.Reference Information Reference Data (Provide these details to our support team) Brand Name/s Cometic Gasket, Cometic, Cometic Gasket Automotive, Cometic Gasket Marine, Cometic Gasket Powersports, COMETIC GASKETS, Cometic Powersport Gaskets StreetFX SKU cgsC7689 SFX Item ID 4163163 Accounting SKU cgs-C7689 Manufacturer SKU C7689 Manufacturer UPC 191070065140 Alternative References C7689, CPG-C7689
Cometic 98-02 Yamaha YZ400/426F 95MM Top End Kit
Today's lightweight engines are producing more horsepower, higher cylinder pressures, clamp loads and extreme temperatures. Our commitment is to provide innovative, quality gaskets while maximizing your engine's power and performance. Cometic's gaskets are proudly made in the USA with materials manufactured on American soil. We are constantly updating and adding models to our ever growing library of gaskets for Powersports, Street Bikes, Snowmobiles, Harley-Davidson and V-Twin applications.
Additional Information
Yamaha 2000 WR400F, YZ400F, WR426F, YZ426F Top End Gasket Kit, 95mm Bore, .027" MLS Cylinder Head Gasket, Without Oil Seals
Part Type
Engine Top End Kit
Features and Benefits
- All of Cometic's gaskets and seals have been tested on both the street and the track as well as vigorous Dyno shakedowns
- No Additional Sealer Needed
Product Details
| Description: | Top End Gasket Kit |
| Engine Make/Size: | Yamaha Motorcycle |
| Part Number: | cgsC7689 |
Product Overview
Data: v2 - Desc: v4.2 - Upd: 2026-10-13 17:21:34
Product Overview
Today's lightweight engines are producing more horsepower, higher cylinder pressures, clamp loads and extreme temperatures. Our commitment is to provide innovative, quality gaskets while maximizing your engine's power and performance. Cometic's gaskets are proudly made in the USA with materials manufactured on American soil. We are constantly updating and adding models to our ever growing library of gaskets for Powersports, Street Bikes, Snowmobiles, Harley-Davidson and V-Twin applications.
Features and Benefits
- No Additional Sealer Needed
Product Details
| Description: | Top End Gasket Kit |
|---|---|
| Engine Make/Size: | Yamaha Motorcycle |
| Part Number: | cgsC7689 |
| WARNING CA Proposition 65 Message: | The state of California has determined that certain chemicals used in the manufacture of this product have been known to cause cancer and birth defects. For more information; visit www.p65Warnings.ca.gov |
| WARNING CA Proposition 65: | Yes |
Part Type
Engine Top End Kit
Features
- All of Cometic's gaskets and seals have been tested on both the street and the track as well as vigorous Dyno shakedowns
- No Additional Sealer Needed
Specifications
Gaskets, Top End Set, Yamaha, Motorcycle, Kit
Cometic Gasket top-end gasket kits contain the most technologically advanced materials available to ensure a critical seal and superior durability. These Cometic Gasket top-end gasket kits come complete with a head gasket, a base gasket, and designated kits include reed, power valve, and exhaust gaskets. Cometic graphite head gaskets are manufactured from non-asbestos, flexible graphite laminated to a stainless steel core, which is impervious to fuels, coolants, and oils.
| Product Attributes | |
|---|---|
| Brand | Cometic Powersport Gaskets |
| Manufacturer's Part Number | C7689 |
| Part Type | Powersports Gasket Kits |
| Product Line | Cometic Gasket Top-End Gasket Kits |
| UPC | 191070065140 |
| Gasket Set Type | Top-end set |
| Head Gaskets Included | Yes |
| Bore (mm) | 95.000mm |
| Compressed Thickness (in.) | 0.027 in. |
| Cylinder Head Gasket Material | Multi-layer steel |
| Cylinder Head O-Rings Included | No |
| Cylinder Head Sealing Washers Included | No |
| Base Gaskets Included | Yes |
| Base Gasket Material | Rubber coated steel core |
| Cam Chain Tensioner Gaskets Included | Yes |
| Cam Chain Tensioner Gasket Material | Foam coated aluminum |
| Cam Chain Tensioner O-Rings Included | No |
| Valve Stem Seals Included | No |
| Intake Gaskets Included | No |
| Exhaust Gaskets Included | No |
| Power Valve Gaskets Included | No |
| Crankcase Clutch Cover Gasket Included | No |
| Outer Clutch Cover Gasket Included | No |
| Crank Oil Seal Left Side Included | No |
| Crank Oil Seal Right Side Included | No |
| Crankcase Center Gasket Included | No |
| Magneto Stator Cover Gasket Included | No |
| Water Pump Gaskets Included | No |
| Quantity | Sold as a kit. |
| Manufacturer Attributes | |
|---|---|
| Title | Cometic Powersports Yamaha 2000 WR400F, YZ400F, WR426F, YZ426F Top End Gasket Kit |
| Package Quantity | 3 |
| Manufacturer Designation | Yamaha 2000 WR400F, YZ400F, WR426F, YZ426F Top End Gasket Kit |
| Product Class | Engine Top End Kit |
| Construction/Type | Yamaha 2000 WR400F, YZ400F, WR426F, YZ426F Top End Gasket Kit, 95mm Bore, .027" MLS Cylinder Head Gasket, Without Oil Seals |
| Vehicle Brief | Yama WR400F/YZ400F/WR426F/YZ426F Top Kit |
Product Details
| Description: | Top End Gasket Kit |
|---|---|
| Engine Make/Size: | Yamaha Motorcycle |
| Part Number: | cgsC7689 |
| WARNING CA Proposition 65 Message: | The state of California has determined that certain chemicals used in the manufacture of this product have been known to cause cancer and birth defects. For more information; visit www.p65Warnings.ca.gov |
| WARNING CA Proposition 65: | Yes |
Reference Information
| Brand Name/s | Cometic Gasket |
|---|---|
| StreetFX SKU | cgsC7689 |
| SFX Item ID | 4163163 |
| Supplier Item Code | 4163163 |
| Manufacturer SKU | C7689 |
| Manufacturer UPC | 191070065140 |
| Alternative References | CPG-C7689, YZ400/426F, 95MM |
Compatibility
| Cometic 98-02 Yamaha YZ400/426F 95MM Top End Kit | ||||
|---|---|---|---|---|
| Year Range | Make | Model | Submodels | Region |
| 2000 | Yamaha | WR400F | Base | US |
| 2001-2002 | Yamaha | WR426F | Base | US |
| 1998-1999 | Yamaha | YZ400F | Base | US |
| 2000-2002 | Yamaha | YZ426F | Base | US |
Please note that this information serves as a fitment guide only. For specific fitment questions or clarifications, please contact us, as manufacturers may introduce variations and modifications during model year or regional revisions. While we strive to provide accurate data, fitment details may vary by region; therefore, compatibility outside the listed region and submodel variant cannot be guaranteed.
Detailed Compatibility
| Application Data | |
|---|---|
| Universal | No |
| Make | YAMAHA |
| Model | WR400F |
| Beginning Year | 2000 |
| Ending Year | 2000 |
| Universal | No |
| Make | YAMAHA |
| Model | WR426F |
| Beginning Year | 2001 |
| Ending Year | 2002 |
| Universal | No |
| Make | YAMAHA |
| Model | YZ400F |
| Beginning Year | 1998 |
| Ending Year | 1999 |
This may not be an exhaustive list of compatible vehicles. Please reach out to one of our representatives if you are unsure or do not see your vehicle here.
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