YAMAHA 99009-20400 Nos Piston Pin Circlip

( Manufacturer Part Number: 99009-20400 ), ( Part Type: Piston Pin ), ( Country Of Origin: United States ), ( Manufacturer Warranty: 30 Day ), ( Storage Location: G2 Delamo-n Buk 22 Bin 1 )

Review YAMAHA Genuine Nos Piston Pin Circlip fits RD400 DT175 1973–1981

Yamaha 1973-1981 NOS Piston Pin Circlip for RD400 and DT175

Introducing the Yamaha 99009-20400, an essential replacement part for the piston pin assembly in Yamaha RD400 and DT175 motorcycles manufactured between 1973 and 1981. This high-quality, newly old stock (NOS) circlip is designed to ensure a perfect fit and reliable performance for your classic two-wheel machine.

The circlip, or clip, is a crucial component of the piston pin assembly, serving to retains the piston pin in the crankshaft. Over time and usage, these parts can wear out or get damaged, resulting in potential engine failure. By installing a new, authentic Yamaha circlip, you'll not only restore the functionality of your motorcycle but also maintain its originality and value.

The Yamaha 99009-20400 is manufactured using the same materials and specifications as the original part, ensuring a perfect fit and compatibility with your RD400 or DT175 engine. The circlip is made from high-strength steel to provide the necessary tension and durability for the piston pin. Its cross-sectional design ensures a secure grip on the piston pin, preventing any unwanted movement or wobble that could lead to engine damage.

Installing the Yamaha 99009-20400 is a straightforward process. First, you'll need to remove the connecting rod from the crankshaft. Once you have access to the piston pin, simply slide the circlip onto the piston pin and press it into the groove on the crankshaft. Finally, reassemble the engine and enjoy the peace of mind that comes with using genuine Yamaha parts.

By choosing the Yamaha 99009-20400, you're not only investing in the performance and longevity of your RD400 or DT175 but also preserving its authenticity and value. This NOS part is an excellent choice for motorcycle enthusiasts, collectors, and riders who take pride in maintaining their classic machines in top condition.

In summary, the Yamaha 99009-20400 is a critical replacement part for the piston pin assembly in Yamaha RD400 and DT175 motorcycles manufactured between 1973 and 1981. This high-quality, NOS circlip is designed to ensure a perfect fit, reliability, and authenticity. By using this genuine Yamaha part, you'll not only restore the functionality of your classic two-wheel machine but also maintain its originality and value.

Buying Yamaha Piston Pin Circlip for RD400 and DT175 (1973-1981): Pros, Cons, and Conclusion

The Yamaha piston pin circlip (Yamaha part number: 99009-20400) is an essential component for the RD400 and DT175 motorcycles manufactured between 1973 and 1981. In this analysis, we will discuss the advantages and disadvantages of purchasing this part and conclude with a recommendation.

1. OEM part: This circlip is a genuine Yamaha part, ensuring a perfect fit and optimal performance for your motorcycle.

2. Ensures engine reliability: A worn-out or damaged piston pin circlip can lead to piston damage, engine misfires, and other engine issues. Replacing it with a new one can help prevent such problems.

3. Availability: This part is readily available from Yamaha dealers and authorized aftermarket suppliers, ensuring timely delivery.

1. Cost: Original Yamaha parts can be more expensive compared to aftermarket alternatives. However, the reliability and fitment guarantee may justify the cost for some riders.

2. Availability through regular retailers: Some local retailers and online marketplaces may not carry this specific part, making it necessary to order it from Yamaha dealers or authorized aftermarket suppliers.

The Yamaha piston pin circlip (99009-20400) is an essential component for the RD400 and DT175 motorcycles (1973-1981). While it comes with a higher price tag than aftermarket alternatives, the benefits of using an OEM part, such as guaranteed fitment, engine reliability, and the peace of mind that comes with using a genuine Yamaha part, may outweigh the cost. It is recommended to purchase this part from Yamaha dealers or authorized aftermarket suppliers to ensure authenticity and timely delivery.

Details:

Yamaha MX / ATV. The image to watch on YouTube. This is a Genuine Yamaha NOS New Old Stock piston pin circlip, essential for securing the in various 2-stroke engines. Spotlight: A Day Inside .

Fits: Fits various 1973-1981 Yamaha 2-stroke motorcycles including RD, DT, MX, TY, and YZ model's. 2009 2014 YAMAHA YZF R1 Cross Plane Crank Air Box Intake Seal 14B-14462-00. Yamaha Cruisers. Ensure proper piston assembly and reliable engine operation.

part #: 9900920400 prices

• $6.98-$24.99

specifications pistondon:

• for models: Rd400, Dt175
• for makes: Yamaha
• for years: 1973-1981
• mpn: 99009-20400
• part type: Piston Pin
• country of origin: United States
• manufacturer warranty: 30 Day
• storage location: G2 Delamo-n Buk 22 Bin 1

offer pistondon:

• options: Ship-to-home
• best offers: True
• sold: 0
• started: January 15, 2026
• quantity: 3
• availability: In Stock

shipping pistondon:

• carrier: USPS, FedEx
• cost: $0.00
• class: Standard, Expedited, One-day
• service: USPS Ground Advantage, USPS Priority Mail, FedEx 2Day, Overnight
• transit: 2-7 Days
• type: Fixed

general pistondon:

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

seller pistondon:

• city: Odessa, Florida
• # reviews: 205118
• rating: 99.2%

returns pistondon:

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

payments pistondon:

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

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