RENTHAL 437U-520-37GBSI Rear Sprocket 765442067522 250/700

( Brand: Renthal ), ( Part Type: Sprocket ), ( Air Freight Prohibited: False ), ( Manufacturer Part Number: 437U-520-37GBSI ), ( UPC: 765442067522 )

Review RENTHAL Rear Sprocket Yamaha And 250/700 fits RAPTOR YFZ450 250 700

The Renthall 437U-520-37GBSi rear sprocket is a high-performance upgrade designed specifically for the Yamaha YFZ450 Raptor 250 and 700 models. This sprocket is engineered to deliver superior strength, durability, and efficiency to enhance the overall performance of your ATV.

The 437U-520-37GBSi sprocket is made from a robust 7075 T6 aluminum alloy, ensuring it can withstand the rigors of off-road riding. Its 37-tooth design provides excellent power transfer from the engine to the drive chain, enabling smoother acceleration and better hill climbing capabilities.

This Renthall sprocket comes with an integrated 520 chainring, which offers improved chain engagement and reduces the risk of chain derailment. The tooth profiles are carefully engineered for optimal chain contact, minimizing wear and ensuring quiet, efficient operation.

One of the standout features of the 437U-520-37GBSi rear sprocket is its GBSi (Groove Backed Sprocket Interface) design. This innovative feature provides a secure and reliable chain connection, reducing the risk of chain jumping or slipping during aggressive riding. The grooves also help to channel away debris, preventing it from accumulating on the sprocket and potentially damaging the chain.

The Renthall 437U-520-37GBSi rear sprocket is easy to install, with no modifications required to your ATV. It comes with a high-quality, O-ring seal that ensures a tight fit and prevents grease leakage. The installation process is straightforward, making it an excellent choice for both professional mechanics and DIY enthusiasts.

In summary, the Renthall 437U-520-37GBSi rear sprocket is a top-tier upgrade for the Yamaha YFZ450 Raptor 250 and 700 models. Its robust construction, efficient tooth design, and innovative GBSi interface make it an essential addition for anyone looking to maximize the performance of their ATV.

Renthal 437U-520-37GBSi Rear Sprocket for Yamaha YFZ450/250/700: A Detailed Analysis

The Renthal 437U-520-37GBSi rear sprocket is a popular choice among Yamaha YFZ450, YFZ250, and YFZ700 riders due to its high-quality construction and performance advantages. In this analysis, we will discuss the pros and cons of investing in this rear sprocket.

1. Lightweight design: The Renthal 437U-520-37GBSi rear sprocket is made of aluminum, making it significantly lighter than the stock sprocket. Lighter components help improve acceleration and overall vehicle performance.

2. Durability: Renthal uses a high-strength aluminum alloy in the manufacturing process, ensuring that the sprocket can withstand the rigors of off-road riding without cracking or bending.

3. Increased horsepower: A lighter rear sprocket results in less engine drag, which can lead to increased horsepower and torque, resulting in improved acceleration and overall performance.

4. Quiet operation: The Renthal 437U-520-37GBSi rear sprocket features a quieter design than the stock sprocket, making for a more enjoyable riding experience.

5. Customizable: Renthal offers different tooth counts for their sprockets, allowing riders to customize their vehicle's final drive ratio to suit their riding style and terrain.

1. Cost: The Renthal 437U-520-37GBSi rear sprocket is more expensive than the stock sprocket. However, the performance advantages may justify the additional cost for some riders.

2. Installation: Installing the Renthal rear sprocket may require additional tools and some mechanical knowledge. It is recommended that the installation be done by a professional or experienced mechanic.

3. Potential chain wear: A lighter rear sprocket can lead to increased chain wear due to the faster rotation speed. Riders may need to replace their chain more frequently.

4. Not compatible with all aftermarket clutches: Some aftermarket clutches may not be compatible with the Renthal rear sprocket, so it's essential to check compatibility before making a purchase.

The Renthal 437U-520-37GBSi rear sprocket offers several performance advantages, including increased horsepower, lighter weight, and quieter operation. However, it also comes with some potential drawbacks, such as increased cost, installation challenges, and potential chain wear. Ultimately, the decision to invest in the Renthal rear sprocket depends on the rider's budget, mechanical skills, and desired performance improvements. If the benefits outweigh the drawbacks and the rider is willing to invest in the upgrade, the Renthal 437U-520-37GBSi rear sprocket is a worthwhile investment.

For riders seeking improved acceleration, increased horsepower, and a quieter riding experience, the Renthal 437U-520-37GBSi rear sprocket is an excellent choice. However, it's essential to weigh the potential drawbacks, such as increased cost and potential chain wear, against the performance benefits before making a purchase. Additionally, be sure to check compatibility with aftermarket clutches before installing the sprocket.

part # 437u52037gbsi prices

• $82.99-$99.82

specifications utvshift:

• for models: Yfz450, 250, 700, Raptor
• for makes: Yamaha
• brand: Renthal
• part type: Sprocket
• air freight prohibited: False
• manufacturer part number: 437U-520-37GBSI
• upc: 765442067522

general utvshift:

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

shipping utvshift:

• service: UPS Ground
• transit: 5-11 Days
• type: Fixed
• carrier: UPS
• class: Standard
• cost: $0.00

offer utvshift:

• quantity: 2
• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: June 18, 2026

payments utvshift:

• credit card: Visa
• wallet: Apple-pay
• other

returns utvshift:

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

seller utvshift:

• rating: 99.8%
• # reviews: 22096

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