HONDA 13121-KA3-761 Nos Piston Ring Standard 13121-KS6-831

( Manufacturer Part Number: 13121-KA3-761 ), ( Engine Type: 2-stroke ), ( Type: Piston Ring ), ( Machine Type: Off-road Motorcycle ), ( Items Included: Piston Rings ), ( Vintage Part: No ), ( California Prop 65 Warning: Warning, Which Is Known To The State Of California To Cause Cancer, Birth Defects, Or Other Reproductive Harm. For More Information, Go To Www.p65warnings.ca.gov . )

Review HONDA Nos Piston Ring Standard fits CR125R 1986–1988

The Honda 13121-ka3-761 and 13121-ks6-831 piston rings are essential parts designed for the CR125R motorcycle model produced by Honda between 1986 and 1988. These piston rings serve a critical role in maintaining the engine's sealing performance and preventing the combustion gases from escaping into the crankcase.

The 13121-ka3-761 piston ring is the standard compression ring. This ring is responsible for sealing the combustion chamber during the compression stroke, ensuring efficient transfer of pressure from the piston to the crankshaft. The ring's cross-sectional design features a narrow groove on the top side, which allows for better gas sealing and improved piston-to-cylinder contact, leading to enhanced engine performance and prolonged engine life.

The 13121-ks6-831 piston ring is the oil control ring. This ring is strategically placed just below the compression ring and is designed to control oil consumption and prevent oil from entering the combustion chamber during the power stroke. The oil control ring's unique design features a wider groove on the top side, which helps to evenly distribute oil around the piston skirt and promote proper lubrication.

Both piston rings are manufactured using high-quality materials that provide excellent durability and resistance to wear and tear. The rings are precision machined to ensure a perfect fit, ensuring a snug seal between the piston and the cylinder wall. These rings are designed to provide optimal engine performance, improved fuel efficiency, and prolonged engine life for your Honda CR125R motorcycle.

When replacing the piston rings, it is essential to follow the manufacturer's instructions carefully to ensure a successful installation. Using the correct installation tools and following the recommended torque specifications are crucial for ensuring proper sealing and preventing any potential engine damage.

In summary, the Honda 13121-ka3-761 and 13121-ks6-831 piston rings are vital components for the CR125R motorcycle engine produced between 1986 and 1988. These rings, the standard compression ring and the oil control ring, are designed to provide efficient sealing, improved engine performance, and prolonged engine life. By using high-quality materials and precision manufacturing techniques, Honda ensures that these piston rings meet the highest standards of durability and reliability for your motorcycle.

Buying the Honda 13121-ka3-761 and 13121-ks6-831 piston rings for a CR125R motorcycle model from the years 1986 to 1988 comes with both advantages and disadvantages.

1. OEM Parts: These piston rings are original equipment manufacturer (OEM) parts, which means they are designed, manufactured, and approved by Honda for use in their CR125R motorcycles. Using OEM parts ensures a proper fit and optimal performance.

2. Long-Lasting: High-quality piston rings can last for thousands of miles, providing reliable engine performance and reducing the need for frequent replacements.

3. Improved Engine Performance: Worn or damaged piston rings can lead to engine issues such as loss of compression, oil leaks, and poor engine performance. Replacing them with new rings can help restore the engine's performance and efficiency.

4. Peace of Mind: Using OEM parts provides peace of mind, knowing that the parts are backed by Honda's warranty and support.

1. Cost: OEM parts, including piston rings, can be more expensive than aftermarket or used parts. The price may be a consideration for some budget-conscious riders.

2. Availability: Depending on the location and availability, it may take some time to acquire these OEM piston rings. If the engine is in dire need of replacement, this could be a concern.

3. Installation: Installing piston rings can be a complex process that requires specialized tools and knowledge. It may be necessary to take the engine to a professional mechanic for installation.

The decision to buy the Honda 13121-ka3-761 and 13121-ks6-831 piston rings for a CR125R motorcycle depends on various factors, including budget, availability, and personal preference. While these OEM piston rings offer the benefits of a proper fit, high-quality materials, and peace of mind, they may come with a higher cost and installation complexity compared to aftermarket or used parts. If engine performance and reliability are top priorities, and the budget allows, using OEM piston rings is recommended. However, for budget-conscious riders or those who prefer a more cost-effective solution, aftermarket or used piston rings may be a viable alternative. Ultimately, the choice depends on individual circumstances and priorities.

Details:

CUSTOM BLOCK HEADING: Custom Block Content. This is new old stock that has been sitting on the shelf and was never installed. Performance Part No. Excellent buyer.

Machine Type Off-road Motorcycle. Same or Next Day Shipping!: Free Shipping On Items Under 1LB. Items Included Piston Rings. This piston ring is used on 1986 1988 Honda CR125R model's.

SPECIFICATIONS: Brand Honda. Type Piston Ring. Online Support: Have a query. Absolute lightening Fast shipping and clear Commas.

Honda NOS Piston Ring Standard 86-88 CR125R 13121-KS6-831: Price.: Genuine Honda NOS piston ring, standard size, part number 13121-KS6-831. Brand new, never used, and still sealed in the original Honda packaging.

part #: 13121ka3761 prices

• $20.00-$92.39

specifications pistondon:

• for models: Cr125r
• for makes: Honda
• for years: 1986-1988
• mpn: 13121-ka3-761
• engine type: 2-stroke
• type: Piston Ring
• machine type: Off-road Motorcycle
• items included: Piston Rings
• vintage part: No
• california prop 65 warning: Warning, Which Is Known To The State Of California To Cause Cancer, Birth Defects, Or Other Reproductive Harm. For More Information, Go To Www.p65warnings.ca.gov .

general pistondon:

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

shipping pistondon:

• carrier: USPS, UPS
• type: Calculated
• cost: $0.00
• transit: 5-10 Days
• class: Standard, Expedited
• service: USPS Ground Advantage, USPS Priority Mail, UPS Ground

offer pistondon:

• sold: 0
• quantity: 1
• started: December 26, 2025
• options: Ship-to-home
• availability: In Stock

seller pistondon:

• rating: 100.0%
• # reviews: 8723
• city: Lake Havasu City, Arizona

returns pistondon:

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

payments pistondon:

• wallet: Google-pay
• other
• credit card: Discover

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