PROTAPER MN-40BY Rear Atv Steel Sprocket Drive Pa MN/40BY

( Brand: Protaper ), ( Manufacturer Part Number: MN/40BY ), ( Compatible Year: 2009 2008 2007 2006 2005 2004 ), ( Bundle Description: 1 Pc Genuine Protaper Atv Cs4 Steel Rear Sprocket ), ( Type: Atv Cs4 Steel Rear Sprocket ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review PROTAPER Mn/40by Atv Steel Rear Sprocket Honda Drive Pa fits CS4 TRX450R 2004–2009

Introducing the ProTaper MN/40 CS4 Steel Rear Sprocket, specifically designed for the 2004-2009 Honda TRX450R ATVs. This high-performance sprocket is an excellent upgrade for those seeking improved drivetrain efficiency and durability.

The CS4 Steel Rear Sprocket boasts a robust, 40-tooth design, crafted from premium, heat-treated steel. The use of steel ensures enhanced strength and longevity compared to standard aluminum sprockets. The tooth profile has been meticulously engineered to provide optimal engagement with the drive belt, ensuring smoother power transmission and reduced wear.

Additionally, the ProTaper MN/40 CS4 Steel Rear Sprocket features a narrower width compared to the OEM sprocket. This design improvement provides better clearance for the drive belt and reduces the chance of contact with the ATV's frame or other components during aggressive riding, preventing belt damage and potential downtime.

Another notable advantage of this ProTaper sprocket is its ability to be used in conjunction with the ProTaper MN/40 CS4 Aluminum Front Sprocket (sold separately). When used together, these sprockets create a 2:1 gear ratio, providing increased low-end torque and improved overall performance for your TRX450R.

Installation of the ProTaper MN/40 CS4 Steel Rear Sprocket is straightforward and can be accomplished with basic hand tools. The sprocket comes complete with a new drive belt and the necessary hardware for installation, ensuring a seamless upgrade experience.

In summary, the ProTaper MN/40 CS4 Steel Rear Sprocket is an excellent choice for Honda TRX450R ATV owners seeking improved drivetrain performance and durability. With its robust steel construction, optimized tooth profile, and narrower width design, this sprocket delivers enhanced power transmission, reduced wear, and peace of mind for your off-road adventures.

The Protaper MN/40 CS4 steel rear sprocket is a popular aftermarket option for the 2004-2009 Honda TRX450R ATV. This sprocket is known for its durability and strength, which can lead to several benefits for the rider. Here are some of the pros and cons of buying this sprocket:

1. Increased durability: The CS4 steel material used in the Protaper MN/40 CS4 sprocket is stronger than the OEM sprocket. This can lead to longer-lasting performance and reduced replacement costs.

2. Better power transfer: The Protaper MN/40 CS4 sprocket has a larger diameter than the OEM sprocket, which can lead to better power transfer from the engine to the wheels. This can result in improved acceleration and overall performance.

3. Customization: The Protaper MN/40 CS4 sprocket is available in various sizes, allowing riders to customize their ATV's gear ratio to suit their riding style and terrain.

1. Cost: The Protaper MN/40 CS4 sprocket is more expensive than the OEM sprocket. However, the increased durability and performance benefits may offset the cost over time.

2. Installation: Installing the Protaper MN/40 CS4 sprocket may require some mechanical skills, as it involves removing the drive belt and the old sprocket. Some riders may prefer to have this done by a professional.

3. Weight: The CS4 steel material used in the Protaper MN/40 CS4 sprocket is heavier than the OEM aluminum sprocket. This can lead to slightly reduced agility and fuel efficiency.

The Protaper MN/40 CS4 steel rear sprocket is a high-quality aftermarket option for the 2004-2009 Honda TRX450R ATV. Its increased durability, better power transfer, and customization options make it an attractive choice for riders who prioritize performance and longevity. However, its cost and installation requirements may be a drawback for some riders. Ultimately, the decision to purchase the Protaper MN/40 CS4 sprocket depends on the rider's budget, mechanical skills, and riding style.

If you are a serious ATV rider who values performance and durability, the Protaper MN/40 CS4 steel rear sprocket is a worthwhile investment. Its increased strength and power transfer capabilities can lead to improved acceleration and overall performance. However, if you are on a tight budget or prefer a lighter sprocket, the OEM aluminum sprocket may be a better choice for you. Regardless of which option you choose, make sure to have the proper tools and mechanical skills to install the new sprocket safely and effectively.

part # mn40by price

• $70.05

specifications utvshift:

• for models: Cs4, Trx450r
• for makes: Honda
• for years: 2004-2009
• brand: Protaper
• manufacturer part number: MN/40BY
• compatible year: 2009 2008 2007 2006 2005 2004
• bundle description: 1 Pc Genuine Protaper Atv Cs4 Steel Rear Sprocket
• type: Atv Cs4 Steel Rear Sprocket
• core charge: Free No Core Charge
• fitment type: Direct Replacement

returns utvshift:

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

shipping utvshift:

• cost: $0.00
• class: Standard
• transit: 2-5 Days
• type: Fixed
• service: Standard

payments utvshift:

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

seller utvshift:

• # reviews: 13418
• rating: 98.1%

general utvshift:

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

offer utvshift:

• started: November 12, 2025
• quantity: 1
• availability: In Stock
• options: Ship-to-home
• sold: 0

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