YAMAHA 94421-18431-00 Rear Wheel Sunstar Sprocket TT350/XT350 18X2.15

( Machine Type: Dual Sport Motorcycle ), ( Wheel Style: Multi Spoke ), ( Color: Silver ), ( Placement On Vehicle: Rear Wheel ), ( Wheel Construction: Spoked Wheel ), ( Type: Wheel ), ( Oe/oem Part Number: 3y1-25311-00-98 ), ( Finish: Matte, Chrome ), ( Wheel Width: 2.15 ), ( Country Of Origin: Japan ), ( UPC: 944211843100 )

Review YAMAHA Tt350/xt350 Rear Wheel 18x2.15 Sunstar 50 Tooth Sprocket fits XT350 TT350

The **Yamaha 94421-18431-00 TT350/XT350 Rear Wheel Assembly (18x2.15 Sunstar 50 Sprocket)** is a precision-engineered, high-performance component designed exclusively for Yamaha s TT350 and XT350 dual-sport and adventure motorcycles, offering a seamless blend of durability, functionality, and off-road capability. This rear wheel assembly features a **18-inch diameter rim** paired with a **2.15-inch wide tire**, striking an ideal balance between on-road stability and off-road traction, making it perfectly suited for riders who demand versatility across a variety of terrains from paved roads to rugged trails. The **Sunstar 50 sprocket**, a key element of the drivetrain, is meticulously crafted from high-grade steel, ensuring optimal durability and resistance to wear, even under the demanding conditions of aggressive riding or prolonged off-road excursions. The sprocket s precise tooth geometry is engineered to minimize chain slippage and maximize power transfer, enhancing both efficiency and reliability, while its robust construction reduces the risk of premature failure, even when subjected to heavy loads or extreme off-road stresses.

Beyond its technical specifications, this rear wheel assembly embodies Yamaha s commitment to performance and rider confidence. The **lightweight yet sturdy construction** of the rim and hub assembly reduces unsprung weight, contributing to improved handling and responsiveness, whether navigating tight corners on a twisty road or tackling loose, uneven terrain. The **sealed bearing system** ensures long-lasting smoothness and reduces maintenance requirements, allowing riders to focus on the journey rather than routine upkeep. Additionally, the wheel s compatibility with the TT350 and XT350 models underscores its role in maintaining the bike s original performance characteristics while accommodating aftermarket upgrades, such as wider tires or different sprocket ratios, for those seeking to tailor their motorcycle to specific riding preferences. Whether used in stock form or as part of a customization project, this rear wheel assembly represents a reliable and high-quality upgrade that elevates both the aesthetics and performance of Yamaha s iconic dual-sport bikes.

### **Pros and Cons of buying a Yamaha TT350/Xt350 Rear Wheel (Yamaha 94421-18431-00, 18x2.15 Sunstar 50 Sprocket)**

1. **Compatibility** This wheel is designed specifically for the Yamaha TT350 and XT350, ensuring a perfect fit without modification. The 18-inch rim size matches the stock rear wheel, making it a straightforward drop-in replacement.

2. **Performance Potential** The **Sunstar 50 sprocket** is a lightweight, high-quality component that can improve chain engagement and reduce weight compared to stock sprockets. A lighter sprocket may slightly enhance acceleration, especially if paired with a lighter chain and proper lubrication.

3. **Durability** Sunstar sprockets are known for their strength and longevity, particularly in off-road applications where durability is critical. The **50-tooth design** is standard for these bikes, ensuring reliable power transfer.

4. **Weight Reduction** If you re upgrading from a heavier stock wheel (some older models had heavier rims), this wheel could help lower unsprung weight, potentially improving handling and braking efficiency.

5. **Aesthetic Appeal** The **Yamaha-branded wheel** maintains the bike s original look while offering an upgrade. If you prefer a cleaner, more modern appearance, this is a subtle but noticeable improvement over heavily worn or damaged stock wheels.

6. **Ease of Installation** Being an OEM-style wheel, it should install similarly to the stock wheel, requiring only basic tools (torque wrench, chain breaker, etc.). No special alignment or balancing is typically needed unless the bike has been heavily modified.

7. **Cost-Effective Upgrade** Compared to full wheel builds (e.g., aftermarket rims brakes), this is a relatively inexpensive way to refresh the rear wheel while gaining performance benefits.

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1. **Minimal Performance Gain** While the Sunstar sprocket is an improvement over a worn stock sprocket, the overall impact on power delivery may be modest unless you re also upgrading the chain, cassette, and suspension. The wheel itself is not a major performance driver compared to engine or suspension upgrades.

2. **No Brake Upgrade Included** This is a **wheel-only** purchase. If your stock rear brake system is worn or inadequate, you ll need to budget for new rotors, pads, and possibly a caliper upgrade (e.g., a dual-piston caliper) for better stopping power.

3. **Potential for Wear on Stock Components** If your bike has high mileage, the axle, bearings, or hub might be worn. Replacing just the wheel without servicing these parts could lead to premature failure. A full rear hub service (or replacement) may be necessary for long-term reliability.

4. **Limited Customization** Unlike aftermarket wheels, this is a stock-style replacement. If you want wider rims, different brake systems, or unique designs, you ll need to look elsewhere.

5. **Chain and Sprocket Maintenance Required** A new sprocket will wear out the chain faster than a worn sprocket would. You ll need to monitor chain stretch and replace it proactively (typically every 3 5,000 miles for off-road use).

6. **No Significant Weight Savings** The weight difference between this wheel and the stock wheel may not be dramatic. For serious weight reduction, you d need to pair this with a lighter chain, cassette, and possibly a carbon fiber wheel (if available for your model).

7. **Potential for Overkill** If your bike is used primarily for light trail riding and the stock wheel is still in good condition, this upgrade may not be worth the cost unless you re replacing a severely damaged wheel.

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### **Conclusion**

This **Yamaha TT350/Xt350 rear wheel (94421-18431-00) with Sunstar 50 sprocket** is a **solid, practical upgrade** for riders looking to refresh their rear wheel while gaining minor performance benefits. It s ideal if:

- Your stock wheel is **damaged, bent, or heavily worn**.

- You want a **lightweight, durable sprocket** for better chain engagement.

- You re on a **budget** but still want an OEM-style improvement.

- You plan to pair it with **proper chain maintenance** and possibly a brake upgrade.

However, if you re seeking **major performance gains**, this alone won t be enough you d need to consider **chain upgrades, suspension tuning, or even a full wheel build** (e.g., aftermarket rims with disc brakes). For **casual riders** or those with a mostly stock bike, the upgrade may not justify the cost unless aesthetics or reliability are a priority.

- **Buy it if:** You need a **direct replacement** for a damaged wheel, want a **lightweight sprocket**, and are okay with minimal performance gains. Pair it with a **high-quality chain (e.g., O-ring or X-ring)** and monitor wear.

- **Skip it if:** Your stock wheel is still functional, you re looking for **major upgrades**, or you d prefer a **full wheel build** (e.g., with aftermarket rims and brakes) for better handling and stopping power.

- **Consider adding:** A **rear brake upgrade** (e.g., dual-piston caliper larger rotor) and a **full hub service** if your bike has high mileage to ensure long-term reliability.

For most riders, this is a **smart, low-risk upgrade** that pays off in durability and slight performance improvements. If you re unsure, check the condition of your **axle, bearings, and chainline** if those are worn, address them first for a complete solution.

Details:

The TT350/XT350 Rear Wheel 18x2.15 with Sunstar 50 Tooth Sprocket is a high-quality motorcycle part designed for dual sport motorcycles. Good condition.

part #: xt350 prices

• $24.99-$86.35

specifications cywhemo:

• for models: Xt350, Tt350
• for makes: Yamaha
• machine type: Dual Sport Motorcycle
• wheel style: Multi Spoke
• color: Silver
• placement on vehicle: Rear Wheel
• wheel construction: Spoked Wheel
• type: Wheel
• oe/oem part number: 3y1-25311-00-98
• finish: Matte, Chrome
• wheel width: 2.15
• country of origin: Japan
• upc: 944211843100

returns cywhemo:

• policy: No Returns

payments cywhemo:

• other
• credit card: Discover
• wallet: Paypal

seller cywhemo:

• # reviews: 1
• rating: 100.0%
• city: South Windsor, Connecticut

general cywhemo:

• Motorcycle Scooter Parts Accessories > Wheels, Tires Parts > Wheels Rims
• condition: Used

shipping cywhemo:

• type: Calculated
• carrier: USPS
• class: Standard
• cost: $129.40
• service: USPS Ground Advantage
• transit: 4-8 Days

offer cywhemo:

• best offers: True
• availability: In Stock
• options: Ship-to-home
• sold: 0
• started: May 3, 2026
• quantity: 1

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