OYO-A0977 OUYUNOU Billet Rear Sprocket 428

Review OUYUNOU Aluminum Billet 39t 76mm Rear Sprocket For 50cc 70cc 90cc 110cc 125cc 140 for 428

Introducing the OUYUNOU OYO-A0977 Billet 428 39T 76mm Rear Sprocket, an essential upgrade for your 50cc, 70cc, 90cc, 110cc, 125cc, or 140cc scooter or motorbike. This high-performance billet sprocket is meticulously engineered for optimized power transfer and unparalleled durability.

Crafted from robust billet aluminum material, this OUYUNOU rear sprocket boasts a sleek, lightweight design. Its 39T tooth count ensures improved acceleration, enabling you to leave the competition behind. The 76mm outer diameter provides ample clearance and fits perfectly with most standard chains.

One of the standout features of this billet sprocket is its precise tooth design. Each tooth is meticulously cut to ensure uniform engagement with the drive chain, reducing wear and tear while increasing power efficiency. The tooth edges are also rounded to minimize the risk of chain jumping or derailment.

Moreover, the OUYUNOU OYO-A0977 Billet 428 39T 76mm Rear Sprocket is designed to dissipate heat effectively. Its open, billet design allows for increased airflow, preventing the sprocket from overheating and ensuring optimal performance, even during prolonged use.

Adding this billet sprocket to your scooter or motorbike is a straightforward process. It comes with an M14x1.5 threaded hole for easy attachment to the motor shaft. Additionally, it includes a 520 O-ring chain to ensure a snug, secure fit.

Investing in the OUYUNOU OYO-A0977 Billet 428 39T 76mm Rear Sprocket is an investment in both performance and longevity. Its superior design and robust construction make it a popular choice among riders looking to enhance their riding experience and take their scooter or motorbike to the next level. Upgrade today and enjoy the power, efficiency, and durability that comes with the OUYUNOU OYO-A0977 Billet 428 39T 76mm Rear Sprocket.

Pros and Cons of Buying OUYUNOU OYO-A0977 Rear Sprocket for 50cc to 140cc Motorcycles

The OUYUNOU OYO-A0977 is a rear sprocket suitable for 50cc to 140cc motorcycles. It is made of high-quality materials for durability and improved performance.

a. Compatibility: This sprocket is suitable for a wide range of motorcycle sizes, from 50cc to 140cc, making it a versatile option for various motorbikes.

b. Material: The OUYUNOU OYO-A0977 is made of high-quality materials, ensuring durability and resistance to wear and tear, even under heavy usage.

c. Design: The sprocket has a well-designed tooth profile, which ensures better traction and power transfer from the engine to the rear wheel.

d. Easy Installation: The OUYUNOU OYO-A0977 comes with all necessary installation hardware and instructions, making it a simple process to replace an old or damaged sprocket.

a. Limited Brand Availability: OUYUNOU is not a well-known brand, which may make it difficult for some consumers to trust the product without prior experience or reviews.

b. Potential Requirement for Chain Adjustment: Installing a new sprocket may require adjusting the chain to ensure proper tension and alignment.

The OUYUNOU OYO-A0977 rear sprocket is a reliable and durable option for motorcycle owners looking to upgrade or replace their current sprocket. Its compatibility with a wide range of motorcycle sizes and high-quality materials make it an attractive choice. However, potential consumers should be aware of the limited brand availability and the need for chain adjustment after installation.

If you are in the market for a new rear sprocket for your motorcycle and are considering the OUYUNOO OYO-A0977, we recommend doing thorough research on the product and reading customer reviews to ensure it meets your expectations. Additionally, consider the potential need for chain adjustment and factor that into your decision-making process. Overall, given its compatibility, durability, and ease of installation, the OUYUNOO OYO-A0977 rear sprocket is a worthwhile investment for motorcycle enthusiasts.

Details:

Package includes: same as the listing sales image. It fits SD wheel 50cc 70cc 90cc 110cc 125cc 140cc 150cc 160cc 170cc 180cc 190cc Chinese made pit dirt bikes including stomp demon x, Pb, Orion, m2r, lucky MC, thump star, explorer, brass, atomic, pit pro, piaster pro, DH, SSE, piranha and many more.: 428 39 teeth 76mm aluminum billet rear sprocket for 50cc-190cc pit dirt bike Pb Orion m2r lucky MC thump star explorer brass atomic pit pro piaster pro DH SSE, material: 7070/7075 aluminum, inner diameter:76mm, tooth: 39 teeth, fits chain only.

specifications gokartmecca:

• brand: Ouyunou
• mpn: Oyo-a0977
• part type: Aluminum Sprocket
• included components: 1 Pc Rear Sprocket
• model name: 428 39teeth 76mm Aluminum Billet Rear Sprocket
• automotive fit type: Vehicle Specific Fit
• size: 428 39teeth 76mm
• color: Red
• auto part position: Rear
• oem equivalent part number: For 50cc-190cc Pit Dirt Bike
• exterior finish: Polished
• material: Aluminum
• package dimensions lxwxh: 3.0x3.0x3.0 Inches
• weight: 0.5 Pounds

general gokartmecca:

• category: Auto Parts > Outdoor Sports > Go-karts Recreational

offer gokartmecca:

• started: april 15, 2026
• in stock #: 3
• prices: $51.22–$51.96
• item condition: New
• availability: in stock
• options: ship-to-home
• sold #: 9

shipping gokartmecca:

• class: standard
• type: fixed
• transit: 4-9 days
• service: standard

payments gokartmecca:

• wallet: apple-pay
• credit card: discover
• other

seller gokartmecca:

• city: las vegas, nevada
• # reviews: 110
• rating: 99.0%

returns gokartmecca:

• method: money back
• paid by: buyer
• policy: returns accepted
• time: 30 days