ACT RB810 Nissansx Release Bearing 240

( Brand: Act ), ( Manufacturer Part Number: RB810 ), ( Part Type: Bearing ), ( Size: 240 )

Review ACT Nissansx Release Bearing 240 fits 1991

Introducing the ACT RB810 1991 Nissan SX Release Bearing, a high-performance upgrade for your Nissan SX engine. This bearing is specifically designed to provide enhanced durability and reliability for those who demand the best from their vehicle.

The ACT RB810 is a precision-machined, forged steel bearing that boasts a larger diameter and heavier construction compared to the factory bearing. Its increased size and weight allow it to support higher horsepower and torque loads, making it an ideal choice for performance enthusiasts and race applications.

One of the key features of this bearing is its unique, self-aligning design. This means that it can accommodate any misalignment or imperfections in the engine, reducing the risk of damage and ensuring a smooth, consistent operation. The self-aligning feature also makes installation easier, as it eliminates the need for precise alignment during installation.

The ACT RB810 is also engineered with a high-quality, chrome molybdenum steel race. This material provides superior strength and durability, ensuring that the bearing can withstand the rigors of high-performance driving. The race is also heat-treated to increase its hardness and resistance to wear, ensuring that it can maintain its performance even under the most demanding conditions.

The ACT RB810 is also designed with a full-contact, interference-fit design. This means that the bearing makes full contact with the engine crankshaft, providing maximum support and reducing the risk of damage from lateral loads. The interference fit also ensures that the bearing stays in place during operation, reducing the risk of premature failure.

Another important feature of the ACT RB810 is its excellent lubrication properties. The bearing is coated with a high-performance, micronized molybdenum disulfide (MoS2) lubricant. This lubricant provides superior film strength and reduces friction, ensuring that the bearing stays cool and runs smoothly even during high-performance driving.

In conclusion, the ACT RB810 1991 Nissan SX Release Bearing is a high-performance upgrade that provides enhanced durability, reliability, and power handling capabilities for your Nissan SX engine. Its self-aligning design, high-quality materials, and full-contact, interference-fit design ensure a smooth, consistent operation, while its excellent lubrication properties help keep the bearing cool and reduce friction. Whether you're a performance enthusiast or a professional racer, the ACT RB810 is the ideal choice for those who demand the best from their vehicle.

The Nissan SX (also known as the Silvia in some markets) RB series engines, particularly the RB24, have been popular choices among performance enthusiasts due to their potential for high power output and responsiveness. The ACT RB810 release bearing is a popular upgrade for those looking to reduce engine rotational mass and improve power delivery. Here are some pros and cons of buying a ACT RB810 release bearing for a 1991 Nissan SX (RB24 engine).

1. Reduced rotational mass: The ACT RB810 release bearing is designed to reduce the weight and size of the factory crankshaft damper, resulting in a reduction of rotational mass. This can lead to improved acceleration and response.

2. Improved power delivery: The reduced rotational mass of the crankshaft can also lead to improved power delivery throughout the rev range.

3. Enhanced engine sound: The lighter crankshaft damper can result in a more aggressive exhaust note, which some enthusiasts find appealing.

1. Increased crankshaft vibration: The lighter crankshaft damper can lead to increased crankshaft vibration, which can be felt through the drivetrain and may be noticeable in the cabin.

2. Higher noise levels: The lighter crankshaft damper can also result in higher noise levels, both inside and outside the vehicle.

3. Potential for damage: The ACT RB810 release bearing is a performance part and may not be suitable for daily driven vehicles or those with weak engine internals. It is important to ensure that the engine is in good condition before installing the bearing.

The ACT RB810 release bearing is a popular upgrade for those looking to improve the performance of their 1991 Nissan SX (RB24 engine) by reducing rotational mass and improving power delivery. However, it is important to note that the lighter crankshaft damper can lead to increased crankshaft vibration and higher noise levels. It is recommended that this part is installed only on well-built engines and that the potential benefits and drawbacks are carefully considered before making a purchase.

If you are considering purchasing the ACT RB810 release bearing for your 1991 Nissan SX (RB24 engine), it is recommended that you thoroughly assess the condition of your engine before installing the part. It is also important to consider the potential benefits and drawbacks carefully and to ensure that the part is installed by a qualified professional. If you are unsure about the suitability of the part for your vehicle, it may be a good idea to consult with a knowledgeable mechanic or engine builder.

Details:

RB810 is a high quality direct-fit release bearing that meets or exceeds OE standards.

part #: rb810 prices

• $48.00-$64.68

specifications motelectr:

• for years: 1991
• brand: Act
• mpn: Rb810
• part type: Bearing
• size: 240

shipping motelectr:

• service: FedEx Ground / FedEx Home Delivery
• type: Fixed
• carrier: FedEx
• cost: $0.00
• transit: 3-9 Days
• class: Standard

returns motelectr:

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

payments motelectr:

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

offer motelectr:

• sold: 0
• quantity: 1
• availability: In Stock
• started: February 25, 2026
• options: Ship-to-home

seller motelectr:

• city: Pauline, South Carolina
• # reviews: 740
• rating: 100.0%

general motelectr:

• Electric, Hybrid PHEV Specific Parts > Drivetrain Motors Parts > Drivetrain Motors
• condition: New