RENTHAL MN-321M Rear Ultralight Sprocket Drive Jm MN/321M

( Brand: Renthal ), ( Manufacturer Part Number: MN/321M ), ( Compatible Year: 2011 2010 ), ( Bundle Description: 1 Pc Genuine Renthal Ultralight Rear Sprockets ), ( Type: Ultralight Rear Sprockets ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review RENTHAL Mn/321m Ultralight Rear Sprocket Yamaha Drive Jm fits YFZ450X 2010–2011

Introducing the Renthal MN/321M Ultralight Rear Sprocket, specifically designed for the 2010-2011 Yamaha YFZ450X drive JM. This high-performance component is a must-have for off-road racers and enthusiasts looking to enhance their vehicle's power output and efficiency.

The Renthal Ultralight Rear Sprocket is engineered using top-grade materials, ensuring durability and reliability. It is manufactured from a lightweight yet robust aluminum alloy, reducing unsprung weight and contributing to improved handling and acceleration. Weighing significantly less than the stock sprocket, this upgrade can help shave valuable seconds off your lap times.

This rear sprocket boasts a 321mm pitch diameter and a 13 tooth count, which is an optimal balance between power delivery and top-end speed. Its fine-tooth design ensures smooth power transmission from the engine to the rear wheel, enabling more efficient use of the engine's power.

The Renthal MN/321M Ultralight Rear Sprocket comes with a durable, high-quality seal, which prevents dirt and debris from entering the drive train, ensuring the longevity of your components. Its design also makes it easy to install, with no need for any modifications to your vehicle.

Upgrading your Yamaha YFZ450X with a Renthal Ultralight Rear Sprocket not only enhances its performance but also adds a touch of style to your ride. Its sleek, machined finish is not only visually appealing but also a testament to Renthal's commitment to producing high-quality, race-proven components.

In summary, the Renthal MN/321M Ultralight Rear Sprocket is a superior upgrade for the 2010-2011 Yamaha YFZ450X drive JM. It offers reduced unsprung weight, improved handling, enhanced power delivery, and increased efficiency. This upgrade is an essential investment for any serious off-road racer or enthusiast looking to take their vehicle's performance to the next level.

Renthall MN/321M Ultralight Rear Sprocket for 2010-2011 Yamaha YFZ450x: A Comprehensive Analysis

The Renthall MN/321M Ultralight Rear Sprocket is a popular aftermarket upgrade for the 2010-2011 Yamaha YFZ450x. This component is designed to reduce unsprung weight and improve power delivery. In this analysis, we will discuss the potential advantages and disadvantages of installing this sprocket on your Yamaha ATV.

1. Weight reduction: The ultralight sprocket is significantly lighter than the stock component. By reducing unsprung weight, the vehicle's suspension can more effectively absorb bumps and improve overall handling.

2. Power delivery: Lighter components allow the engine to transfer power more efficiently to the wheels. This results in smoother power delivery and better acceleration.

3. Durability: Renthall is known for manufacturing high-quality components. The ultralight sprocket is no exception. It is made from strong materials that can withstand the rigors of off-road riding.

1. Cost: The Renthall MN/321M Ultralight Rear Sprocket is more expensive than the stock component. This may deter some riders from making the upgrade.

2. Installation: Installing the new sprocket may require some additional steps compared to the stock component. This includes adjusting the chain tension and possibly purchasing new chain links.

3. Noise: Some riders have reported that the ultralight sprocket produces more noise than the stock component. This may be due to the lighter material or the need for a slightly tighter chain.

The Renthall MN/321M Ultralight Rear Sprocket is an attractive upgrade for those seeking improved handling, smoother power delivery, and durability. However, the higher cost and potential for increased noise may deter some riders. Ultimately, the decision to purchase this component depends on your personal preferences and off-road riding style.

If you prioritize improved handling, smoother power delivery, and durability, the Renthall MN/321M Ultralight Rear Sprocket is a worthwhile investment. Be prepared for the additional cost and potential for increased noise. Properly installing the new component, including adjusting the chain tension and possibly purchasing new chain links, is crucial for optimal performance.

part # mn321m price

• $84.15

specifications utvshift:

• for models: Yfz450x
• for makes: Yamaha
• for years: 2010-2011
• brand: Renthal
• manufacturer part number: MN/321M
• compatible year: 2011 2010
• bundle description: 1 Pc Genuine Renthal Ultralight Rear Sprockets
• type: Ultralight Rear Sprockets
• core charge: Free No Core Charge
• fitment type: Direct Replacement

seller utvshift:

• # reviews: 22873
• rating: 99.3%

payments utvshift:

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

returns utvshift:

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

shipping utvshift:

• cost: $0.00
• transit: 4-11 Days
• type: Fixed
• service: Standard
• class: Standard

general utvshift:

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

offer utvshift:

• availability: In Stock
• sold: 0
• quantity: 1
• started: May 16, 2026
• options: Ship-to-home

Renthal MN-321M Is Similar To:

• Renthal 9829-r196236-atv Ultralight Rear Sprocket-40t For 2003-2014 Suzuki Lt-z400 Quadsport Z (63.2% similar) $35.00–$99.82. (December 14th, 2024)
• Renthal 9828-r196234-atv Ultralight Rear Sprocket-40t For 2003-2006 Kawasaki Kfx400 Atv (59.9% similar) $35.00–$83.99. (December 14th, 2024)
• Renthal 1585-r341748-atv Ultralight Rear Sprocket-38t 06-14 Honda Trx450er Trx450r Trx 450r 450er (50.8% similar) $81.99–$91.83. (December 26th, 2024)
• Renthal 437u-520-39gbsi Sprocket Rear 39t 520 Ultralight Aluminum Silver #437u-520-39gbsi Yamaha (42% similar) $73.53–$99.82. (December 27th, 2024)
• Renthal Mn/pee7 Ultralight Rear Sprocket For 2001-2005 Yamaha Yfm660r Raptor - Ga (75.8% similar) $88.55. (January 19th, 2025)
• Renthal 765442003766 520 Grooved Front Sprocket 14t #253 520-14gp For Honda Trx450 (38.3% similar) $35.01–$37.95. (January 20th, 2025)
• Renthal 130u-520-40gbsi Sprocket Rear 40t 520 Ultralight Aluminum Silver #130u-520-40gbsi Yamaha (42% similar) $79.53–$99.82. (January 25th, 2025)
• Renthal Mn/edj6 Ultralight Rear Sprocket For 2008-2014 Kawasaki Kfx450r - Drive Lo (81.5% similar) $99.40. (January 27th, 2025)
• Renthal 765442064965 Sprocket Rear 40t 520 Ultralight Aluminum Silver #203u-520-40gpsi (32.5% similar) $89.84–$89.99. (February 8th, 2025)
• Renthal 223a-520 Kfx450r Kfx 450r Ultralight Rear Sprocket 38t 223a-520-38gesi 1047 (52.8% similar) $84.81–$89.99. (February 12th, 2025)
• Renthal 765442080958 520 Grooved Front Sprocket 14t #450 520-14gp Fits Honda Trx400 (39.3% similar) $36.39–$38.57. (February 13th, 2025)