RACE-DRIVEN F-21559 Rear Sprocket 191916247488 40

( Brand: Race-driven ), ( Part Type: Sprocket ), ( Manufacturer Part Number: F-21559 ), ( Material: Stainless Steel ), ( UPC: 191916247488 )

Review RACE DRIVEN Sprocket Yamaha Rear 40 Tooth By fits YFZ450 2004–2025

Introducing the Race-Driven F-21559 Sprocket, an essential upgrade for your Yamaha YFZ450 2004-2005 models. This high-performance sprocket is specifically designed to deliver superior strength and durability, allowing you to push your ATV to the limit.

Crafted from premium quality materials, the Race-Driven F-21559 Sprocket boasts a robust construction that can withstand the rigors of off-road racing. Its teeth are precision-machined to ensure optimal engagement with the drive chain, providing efficient power transfer and reducing wear and tear.

The sprocket features a 40-tooth design, which is an ideal choice for enhancing acceleration and top speed on your YFZ450. The larger tooth count reduces the number of revolutions per mile, resulting in quicker acceleration and a more responsive ride.

The Race-Driven F-21559 Sprocket comes with a 25mm bore size, ensuring a perfect fit for your ATV's rear drive system. Its generous clearance allows for smooth operation and minimal chain binding, even in the most demanding off-road conditions.

Installing the Race-Driven F-21559 Sprocket is a straightforward process. It comes with all necessary hardware for a hassle-free installation. The sprocket also includes a high-quality seal to protect against dirt and debris, ensuring optimal performance and longevity.

In summary, the Race-Driven F-21559 Sprocket is an excellent investment for any Yamaha YFZ450 2004-2005 owner who is looking to enhance their ATV's performance and durability. With its robust construction, efficient power transfer, and easy installation process, this high-performance sprocket is a must-have accessory for off-road enthusiasts and racers alike.

Buying a race-driven F-21559 sprocket for a Yamaha YFZ450 (2004-2005) with a rear 40-tooth setup can offer several benefits and drawbacks. Let's examine each in detail.

1. Enhanced Power Delivery: Race-driven sprockets are designed to optimize power transfer between the engine and the wheels. This results in improved acceleration and overall performance.

2. Durability: High-quality race-driven sprockets are engineered to withstand the rigors of off-road racing. They are often made from stronger materials and have enhanced coatings to resist wear and tear.

3. Customization: A race-driven sprocket allows you to fine-tune your YFZ450's gear ratio, giving you more control over your vehicle's powerband and enabling you to better match the terrain you'll be riding on.

1. Cost: Race-driven sprockets tend to be more expensive than stock sprockets due to their superior materials and construction techniques.

2. Installation Complexity: Installing a race-driven sprocket may require more advanced knowledge and tools compared to a stock sprocket. You may need to adjust your chain tension, re-balance your wheels, or even modify your drive system.

3. Noise Level: High-performance sprockets can generate more noise due to their aggressive design and increased power delivery. This may not be an issue for racers, but it could be a concern for those who ride in more residential areas.

A race-driven F-21559 sprocket can provide significant benefits for those looking to enhance the performance of their Yamaha YFZ450 (2004-2005) with a 40-tooth rear setup. However, it comes with a higher cost, increased complexity, and potentially increased noise levels. Ultimately, the decision to purchase a race-driven sprocket depends on your personal riding style, budget, and priorities. If you're an avid off-road racer who demands the best performance, a race-driven sprocket may be a worthwhile investment. For casual riders, the added complexity and cost may not be justified.

If you're considering purchasing a race-driven F-21559 sprocket for your Yamaha YFZ450 (2004-2005) with a 40-tooth rear setup, we recommend doing thorough research on various manufacturers and models before making a decision. Look for reputable brands with a proven track record of producing high-quality, durable products. Additionally, consult with a knowledgeable mechanic or off-road expert to ensure that installing the race-driven sprocket is the right choice for your specific riding needs and circumstances.

part # f21559 price

• $31.66

specifications utvshift:

• for models: Yfz450
• for makes: Yamaha
• for years: 2004-2025
• brand: Race-driven
• part type: Sprocket
• manufacturer part number: F-21559
• material: Stainless Steel
• upc: 191916247488

shipping utvshift:

• class: Standard, Expedited, One-day
• service: USPS Ground Advantage, FedEx 2Day, USPS Priority Mail, FedEx Standard Overnight
• carrier: USPS, FedEx
• transit: 3-5 Days
• cost: $0.00
• type: Calculated

seller utvshift:

• rating: 99.8%
• # reviews: 120797

payments utvshift:

• credit card: Diners-club
• wallet: Google-pay
• other

offer utvshift:

• options: Ship-to-home
• sold: 0
• availability: In Stock
• started: April 28, 2026

general utvshift:

• ATV, Side-by-Side UTV Parts Accessories > Transmission Drivetrain > Other Transmission Drivetrain Parts
• condition: New

returns utvshift:

• policy: Returns Accepted
• paid by: Seller
• time: 60 Days

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