Wiseco 4649M09200 Piston Kit for Yamaha WR400F / YZ400F - 92.00mm
Wiseco Performance Piston Kit
Part Number: 4649M09200
Piston Size: 92.00mm
- These kits contain everything you need to complete your piston repair, the first time
- Dedicated forgings used for superior strength to weight ratio utilizing aerospace alloy.
- High Performance ring kit and alloy pin included with each piston kit for extended life and sustained power.
- Each piston is built from race proven designs that are chosen by the top race teams in all forms of racing including Supercross, Motocross, GNCC, Superbike, and more.
- All Piston Kits are precision crafted and forged in the USA
Wiseco leads the performance aftermarket by producing the highest quality forged pistons for Dirt Bikes, ATV's, Snowmobiles, Outboard Marine, and Motorcycles right here in the USA. Wiseco is unique because we forge all of our own pistons in house, and produce all of our own forge tooling right here in the USA. Extreme racing conditions demand the strength and toughness that only forged pistons can offer. Compared to cast pistons, forgings are tougher and more durable, and will stand up to the abuse that high performance motorsport applications require. Most castings are brittle, have no grain structure and tend to fail catastrophically when the material yield strength is exceeded. Forgings have condensed grain that is aligned to the features of the part, which produces higher mechanical properties, and resistance to impact and fatigue. Each forging is designed to optimize the strength-to-weight ratio, and maximize performance. In addition, in-house dyno testing gives Wiseco the ability to develop state-of-the-art technology such as new shapes, coatings, and components, and lead the industry through rigorous R&D.
1998-00 Yamaha WR400F
1998-99 Yamaha YZ400F
- Displacement: 399cc
- Standard Piston Size: 92.00mm
- Bore Oversize: STD
- Stroke: 60.10mm
- Compression Ratio: 12.5 : 1
Tire Diameter Speed Rating Load Rating Wall Construction Tire Tube Type Rim Size Product Line Wiseco Piston Kit Part Number 4649M09200 Fitment Type Unit Sale Qty Each Style Material Color Size 92.00mm Finish Position Functional Length Cable Sleeve Length Cable Sleeve Travel Driver Seat Length Passenger Seat Length Driver Seat Width Passenger Seat Width Piston/Cylinder Size 92.00mm Piston Size Added Cylinder Stroke Volume Final Engine Displacement Exhaust Configuration Muffler Size Muffler End/Tip Style Windshield Height Windshield Width Handlebar Diameter Ca ARB Compliance Non CARB Complaint CARB Compliant Product Disclaimer
2000 Yamaha WR400F
1999 Yamaha WR400F
1998 Yamaha WR400F
1999 Yamaha YZ400F
1998 Yamaha YZ400F
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Application specific parts will have part compatibility indicated in the "Fits" or "Fitment" section of the product description and will be provided for all application specific products. These fitment indications are sourced from the product manufacturer and may be subject to change. Please be careful in reading any/all fitment indications for exact Year-Make-Model-Sub Model indications to make sure the part ordered will fit your exact application/s. If you are uncertain about a part compatibility and will to clarify before purchase, please feel free to message us at anytime and an experienced support staff member will assist you in verifying fitment to his/her best ability.Image Policy
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At SVS Powersports we understand that a product does not always look, fit or function as expected. If such a situation arrises, we do accept returns of all Unopened, Unused items with original packaging within 30 days of purchase/delivery. If your item is damaged, defective or completely different from the item ordered, please DO NOT submit a return request, please contact our knowledgable support staff with a clear description of the issue and someone will get back to you in a prompt time frame.
At SVS Powersports we are proud to offer unparalleled level of customer support and if any question or issue should arise, do not hesitate to contact us at any time. We have a very experienced and knowledgable support staff that can assist you with virtually any inquiry. Support staff is available 6 Days a week (Monday Thru Saturday) 10AM to 6PM EST by calling 1-800-787-5817 OR via email at email@example.com with most inquiries responded to within less than an hour during our staff support hours. If you contact us outside these hours, we may still get back you right away, but a response may be delayed until the next business day.
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