SX-2MBY NATIONAL Rear Inner Differential Pinion Race Ws

Review NATIONAL Rear Inner Differential Pinion Race For Plymouth Superbird Ws for PLYMOUTH 1970

Introducing the National SX-2MBY Rear Inner Differential Pinion Race for the iconic 1970 Plymouth Superbird WS, a high-performance upgrade for your muscle car's powertrain. This race is meticulously engineered to deliver enhanced strength, durability, and reliability to your differential assembly.

The National SX-2MBY Rear Inner Differential Pinion Race is precision-machined from premium billet steel, ensuring a perfect fit and exceptional quality. Its hardened and ground raceway provides a smooth surface for the pinion shaft to operate, reducing friction and wear, and contributing to improved power transmission and longevity.

This race is designed to accommodate standard 28-spline pinion shafts, making it an excellent choice for upgrading the factory differential in your 1970 Plymouth Superbird WS. Its robust construction and superior finish ensure a reliable, long-lasting solution for those seeking to extract more power and performance from their muscle car.

Moreover, this race is an ideal upgrade for Superbird enthusiasts planning to take their cars to the track or engage in high-performance driving. The enhanced durability and strength of the National SX-2MBY Rear Inner Differential Pinion Race enable it to withstand the increased loads and stresses that come with high-performance driving, ensuring your Superbird remains a formidable contender on the track or the street.

In summary, the National SX-2MBY Rear Inner Differential Pinion Race for the 1970 Plymouth Superbird WS is a vital upgrade for those seeking to improve their muscle car's powertrain performance, reliability, and durability. Its precision-engineered design, premium billet steel construction, and hardened and ground raceway make it an essential component for any Superbird enthusiast looking to maximize their driving experience.

Buying a national SX-2MBY rear inner differential pinion race for a 1970 Plymouth Superbird can be a beneficial modification for several reasons. Here are some pros and cons to consider:

1. Improved Gearing: The SX-2MBY pinion race is designed for use with aftermarket gears, allowing for better gear ratios and improved performance.

2. Increased Durability: The race is made from high-strength materials, which can help increase the lifespan of the differential and reduce the risk of failure.

3. Better Torque Capability: The stronger design of the SX-2MBY pinion race can help improve the Superbird's torque capacity, allowing for better acceleration and power delivery.

1. Cost: The SX-2MBY pinion race is a relatively expensive modification, and the cost of the part, as well as any associated labor costs, can add up.

2. Installation Complexity: Installing the SX-2MBY pinion race requires disassembling the differential and other related components, which can be a time-consuming and complex process.

3. Potential for Damage: During the installation process, there is a risk of damaging other components in the differential or the surrounding area, which could lead to additional repair costs.

The decision to buy a national SX-2MBY rear inner differential pinion race for a 1970 Plymouth Superbird ultimately depends on the individual's goals and budget. If performance and durability are top priorities, then the benefits of this modification may outweigh the costs and complexities involved. However, if budget is a concern or if the Superbird is primarily used for casual driving, then the investment in this part may not be necessary. Ultimately, it is important to weigh the pros and cons carefully and consult with a professional mechanic to determine if this modification is right for your specific vehicle.

If you decide that the benefits of the SX-2MBY pinion race outweigh the costs and complexities, then it is recommended to source the part from a reputable supplier and work with a qualified mechanic to ensure proper installation. Additionally, consider investing in a high-quality set of aftermarket gears to maximize the performance benefits of this modification.

Details:

National rear inner differential pinion race for 1970 Plymouth superbird ws: status: in stock.

specifications differentialsdepo:

• for makes: Plymouth
• for years: 1970
• brand: National
• mpn: Sx-2mby
• placement on vehicle: Driveline Axles Bearings
• type: Differential Pinion Race
• item length: 3.250
• manufacturer warranty: 1 Year
• ipn: C623 53-26
• compatible model: Superbird
• core charge: Free No Core Charge
• position: Rear Inner
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine National Differential Pinion Race

shipping differentialsdepo:

• service: standard, expedited
• transit: 5-9 days
• type: fixed
• class: standard, expedited

returns differentialsdepo:

• policy: returns accepted
• paid by: seller
• time: 30 days

offer differentialsdepo:

• in stock #: 2
• sold #: 9
• prices: $20.59–$25.30
• item condition: New
• options: ship-to-home
• started: february 14, 2026
• availability: in stock

payments differentialsdepo:

• wallet: apple-pay
• other
• credit card: mastercard

general differentialsdepo:

• category: Auto Parts > Transmission Drivetrain > Differentials, Assemblies > Additional

seller differentialsdepo:

• rating: 99.5%
• city: indianapolis, indiana
• # reviews: 622659