fits model: Crf250r. make: Honda. year: 2010–2017.

( Brand: Athena ), ( Manufacturer Part Number: S4F08200004A ), ( Type: Piston Kit )
Introducing the Athena S4F08200004A Big Piston Kit for the Honda CRF250R, a high-performance upgrade for serious off-road enthusiasts. Designed to deliver enhanced power and durability, this piston kit is engineered to meet the demands of competition-level riding.
The heart of this kit is the oversized 95mm piston. Compared to the stock piston on the CRF250R, this larger piston increases the engine's displacement, leading to more power and torque. The piston is crafted from a forged alloy material for improved durability and consistent engine performance under high load conditions. This enables riders to tackle more challenging obstacles with confidence.
Additionally, the Athena S4F08200004A Big Piston Kit includes a lightweight honed skirt for reduced friction and enhanced piston-liner interaction. The piston pin and piston pin retainer are also included and are made from high-strength materials to support the increased power output.
One of the standout features of this kit is its compatibility with the OEM timing belt and camshaft, making installation a more straightforward process. Moreover, this kit has been extensively tested to ensure reliable operation and is a suitable upgrade for CRF250R models from 10 to 17.
The Athena S4F08200004A 95mm Big Piston Kit is an excellent upgrade choice for riders who are interested in pushing their CRF250R's performance limits. By enhancing power and durability, this kit will enable better handling and more confidence on the track or the trails. Upgrade your CRF250R today with the Athena S4F08200004A Big Piston Kit.
When you purchase the Athena S4F08200004A 81 95mm Big Piston Kit for Honda CRF250R, you will receive a comprehensive set of high-quality components. Included in the kit are:
1. Forged 95mm Oversized Aluminum Piston
2. Honed Piston Skirt
3. Piston Pins
4. Piston Pin Retainers
Please note that the installation of this kit requires a level of mechanical expertise. It is recommended that an experienced technician handle the installation to ensure proper fitment and function. Always follow the installation instructions provided by the manufacturer carefully. Additionally, be sure to use the appropriate engine oil and maintenance schedule to ensure the longevity of your upgrade.
Embrace the power and performance benefits of the Athena S4F08200004A 81 95mm Big Piston Kit for the Honda CRF250R. It's time to take your off-road adventures to the next level.
The Athena S4F08200004A 81mm big piston kit is a popular aftermarket upgrade for the Honda CRF250R motocross bike. This kit is designed to provide increased power and performance. In this analysis, we will discuss the pros and cons of this upgrade to help you make an informed decision.
Pros:1. Increased Power and Performance: The primary reason for installing a big piston kit is to increase the engine's power output. The Athena S4F08200004A kit is known to provide a significant power gain, making the bike more responsive and enabling better acceleration, particularly in the mid to top end of the power band.
2. Improved Top End Power: A larger piston allows the engine to take in more fuel and air, resulting in improved top-end power. Riders report that the bike feels more powerful and faster once the kit is installed.
3. Enhanced Durability: An oversized piston kit can improve the durability of the engine by reducing piston slap and engine knock. These issues can cause damage to the engine in the long run and can significantly reduce performance.
4. Customizability: Installing a big piston kit is an excellent way to personalize your bike and make it stand out from the rest. With various options and configurations available, you can choose the setup that best suits your riding style and preferences.
Cons:1. Higher Cost: The Athena S4F08200004A 81mm big piston kit is not an inexpensive upgrade. The cost of the kit, installation, and any additional modifications required can add up quickly.
2. Complex Installation: Installing a big piston kit requires some technical expertise and specialized tools. The process is more complex than a typical oil change or air filter replacement. It's recommended that the installation is done by a professional to ensure accurate setup and proper function.
3. Potential Increase in Emissions: An oversized piston kit can increase engine emissions, as the engine will be burning more fuel to make more power. This might not be an issue for off-road use, but if you plan to use the bike on the street, you may want to consider the emissions implications before making the purchase.
4. Required Additional Modifications: Installing a big piston kit might require other modifications to ensure proper engine operation. These modifications might include upgraded exhaust systems, re-jetting the carburetor, or adjusting the ignition timing. These additional costs can add to the overall price of the upgrade.
Conclusion:The Athena S4F08200004A 81mm big piston kit offers several advantages for Honda CRF250R riders, such as increased power and performance, improved durability, and enhanced customizability. However, the higher cost, complex installation process, potential increase in emissions, and required additional modifications might deter some riders.
If you are an experienced rider and mechanic, prefer a high-performance setup, and are willing to invest the time and money in the upgrade, the Athena S4F08200004A big piston kit is an excellent choice. However, if you are a casual rider or have minimal mechanical expertise, it might be worth considering other, less complicated upgrades to the Honda CRF250R. In conclusion, it's essential to weigh the pros and cons carefully before making your decision.
Athena 2010 2017 CRF250R Big Bore Piston, S4F08200004A, 81.95mm Diameter, Fits: Honda with ATHENA BIG BORE 280CC CYLINDER KIT, 82MM. Does not include electrical or engine parts. Part Number S4F08200004A X1. Brand New in box, Never Used.