WISECO 402-P4 Piston

( Brand: Wiseco ), ( Manufacturer Part Number: 402-P4 ), ( Engine Type: 2-stroke ), ( Type: Piston ), ( Machine Type: Off-road Motorcycle ), ( Items Included: Piston Rings ), ( Vintage Part: Yes ), ( Country Of Origin: United States )

Review WISECO Piston 402 P4 Suzuki 100 Motocross fits RM 1976

WISCO 402-P4 Piston - Perfect Fit for Suzuki RM 1976

The WISCO 402-P4 piston is an excellent replacement option for the piston that comes stock in the Suzuki RM 1976. This high-performance piston is meticulously engineered to deliver optimal power and efficiency while ensuring a perfect fit for your Suzuki dirt bike.

The WISCO 402-P4 piston is made from a forged aluminum alloy, ensuring superior strength and durability. The piston crown is designed with a compression height of 1.96 inches and a total piston height of 3.01 inches, providing an excellent power band and ensuring compatibility with the Suzuki RM 1976's engine.

The piston skirt is designed with a generous gudgeon pin bore of 0.551 inches, allowing for a precise fit and smooth operation. The piston rings that come included with the WISCO 402-P4 piston are made from high-quality, heat-resistant materials, ensuring a tight seal and efficient transfer of power from the piston to the crankshaft.

The piston pin that comes with the WISCO 402-P4 piston is made from high-strength chromoly steel, ensuring a secure connection between the piston and the connecting rod. The piston pin is also coated with a durable, high-temperature nickel plating, providing additional protection against wear and tear.

The WISCO 402-P4 piston also comes with a piston pin retaining clip, ensuring that the piston pin remains securely in place during operation. The piston also features a balanced design, reducing vibration and ensuring smooth engine operation.

Installing the WISCO 402-P4 piston is a straightforward process, and it comes with clear and concise installation instructions to guide you through the process. Additionally, the piston is precision-machined to ensure a perfect fit, eliminating the need for extensive engine modifications or machining.

In summary, the WISCO 402-P4 piston is a high-quality, reliable, and powerful replacement option for the stock piston in the Suzuki RM 1976. It is meticulously engineered to deliver optimal power and efficiency, ensuring that your dirt bike is always performing at its best.

The Wiseco 402-P4 piston is a popular aftermarket option for Suzuki RM1976 two-stroke motorcycles. Here are some potential pros and cons of purchasing this piston:

1. Improved performance: The Wiseco 402-P4 piston is designed to provide better performance than the stock piston. It offers increased power output and improved engine response.

2. Durability: Wiseco is known for manufacturing high-quality pistons, and the 402-P4 piston is no exception. It is designed to withstand the rigors of off-road racing, making it a durable option for your Suzuki RM1976.

3. Customization: The Wiseco 402-P4 piston is available in various sizes and specifications, allowing riders to customize their engine to suit their specific riding style and conditions.

4. Lightweight: The piston is lighter than the stock piston, which can result in improved engine response and increased revving capabilities.

1. Cost: The Wiseco 402-P4 piston is more expensive than the stock piston. While the performance benefits may be worth the cost for some riders, others may prefer to stick with the stock piston to save money.

2. Installation: Installing the Wiseco 402-P4 piston requires some mechanical knowledge and skills. If you are not comfortable performing the installation yourself, you may need to pay for professional installation, which can add to the overall cost.

3. Potential compatibility issues: While the Wiseco 402-P4 piston is designed to fit the Suzuki RM1976, there is a possibility of compatibility issues with certain engines or specific components. It is essential to ensure that the piston is compatible with your motorcycle before making a purchase.

The Wiseco 402-P4 piston is an excellent option for Suzuki RM1976 riders who are seeking improved performance and durability. However, it comes with a higher cost and the requirement for some mechanical knowledge for installation. If you are comfortable with these factors and are willing to invest in the performance benefits, then the Wiseco 402-P4 piston is a worthwhile investment.

If you are looking to improve the performance of your Suzuki RM1976 and are comfortable with the cost and installation requirements, then the Wiseco 402-P4 piston is a recommended option. It is essential to ensure that the piston is compatible with your motorcycle before making a purchase and to consider having it professionally installed if you are not confident in your mechanical abilities.

Details:

The Wiseco Piston 402 P4 is a high-quality engine part designed specifically for Suzuki RM 100 1976 motocross motorcycles. This piston is a 2-stroke type and comes with rings included.

part #: 402p4 prices

• $34.99-$75.99

specifications pistondon:

• for models: Rm
• for makes: Suzuki
• for years: 1976
• brand: Wiseco
• mpn: 402-p4
• engine type: 2-stroke
• type: Piston
• machine type: Off-road Motorcycle
• items included: Piston Rings
• vintage part: Yes
• country of origin: United States

offer pistondon:

• options: Ship-to-home
• availability: In Stock
• sold: 0
• started: March 14, 2026
• quantity: 1

shipping pistondon:

• service: Economy
• class: Economy
• type: Fixed
• transit: 4-10 Days
• cost: $10.95

payments pistondon:

• other
• wallet: Paypal
• credit card: Mastercard

seller pistondon:

• rating: 100.0%
• # reviews: 1572
• city: Baton Rouge, Louisiana

general pistondon:

• condition: New other see details
• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits

returns pistondon:

• policy: Returns Accepted
• paid by: Seller
• time: 30 Days

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