B&M TH400 Shift Improver Kit — Fits TH400 / TH375 / M40 1965-1987 Transmissions

Save 10%
SKU: BBFT_20260

About B&M B&M engineers high-quality automotive parts and accessories trusted ...Read more

Price:
Sale price$69.44 Regular price$77.15
690 ENTRIES10X
Add To Cart
Checking fitment…
×

Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About B&M

B&M engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full B&M lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Transform Your TH400 with B&M Shift Improver Kit

Unleash the full potential of your classic automatic transmission with the B&M TH400 Shift Improver Kit. Designed for TH400, TH375, and M40 transmissions manufactured between 1965 and 1987, this kit delivers a noticeable improvement in shift quality and performance. Say goodbye to sluggish, soft shifts and experience the crisp, firm gear changes that B&M is famous for, enhancing both street driving and track performance.

Engineered for Enhanced Performance and Durability

The B&M Shift Improver Kit is not just about firmer shifts; it's about improving the overall durability and responsiveness of your transmission. By optimizing hydraulic pressures and shift timing, this kit reduces clutch and band slippage, which is a primary cause of transmission wear and heat buildup. The result is a more efficient power transfer, quicker acceleration, and a longer lifespan for your valuable transmission.

  • Application: Automatic Transmission Shift Kit
  • Compatibility: TH400, TH375, M40 Transmissions (1965-1987)
  • Benefit: Firmer, faster, and more positive shifts
  • Enhances: Transmission durability and performance
  • Installation: Kit includes all necessary components and detailed instructions
  • Type: Shift Improver

Experience the B&M Difference

Whether you're restoring a classic muscle car, building a drag racer, or simply want a more engaging driving experience, the B&M TH400 Shift Improver Kit is an excellent investment. It provides a significant upgrade without requiring a complete transmission overhaul, making it a cost-effective solution for enthusiasts. Trust B&M's legendary expertise to bring out the best in your automatic transmission. Find this and more performance drivetrain solutions at GGCRACING.

About B&M

B&M engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full B&M lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Transform Your TH400 with B&M Shift Improver Kit

Unleash the full potential of your classic automatic transmission with the B&M TH400 Shift Improver Kit. Designed for TH400, TH375, and M40 transmissions manufactured between 1965 and 1987, this kit delivers a noticeable improvement in shift quality and performance. Say goodbye to sluggish, soft shifts and experience the crisp, firm gear changes that B&M is famous for, enhancing both street driving and track performance.

Engineered for Enhanced Performance and Durability

The B&M Shift Improver Kit is not just about firmer shifts; it's about improving the overall durability and responsiveness of your transmission. By optimizing hydraulic pressures and shift timing, this kit reduces clutch and band slippage, which is a primary cause of transmission wear and heat buildup. The result is a more efficient power transfer, quicker acceleration, and a longer lifespan for your valuable transmission.

  • Application: Automatic Transmission Shift Kit
  • Compatibility: TH400, TH375, M40 Transmissions (1965-1987)
  • Benefit: Firmer, faster, and more positive shifts
  • Enhances: Transmission durability and performance
  • Installation: Kit includes all necessary components and detailed instructions
  • Type: Shift Improver

Experience the B&M Difference

Whether you're restoring a classic muscle car, building a drag racer, or simply want a more engaging driving experience, the B&M TH400 Shift Improver Kit is an excellent investment. It provides a significant upgrade without requiring a complete transmission overhaul, making it a cost-effective solution for enthusiasts. Trust B&M's legendary expertise to bring out the best in your automatic transmission. Find this and more performance drivetrain solutions at GGCRACING.

Customer reviews

No reviews yet. Bought this part? Tell other drivers how it fits and performs.

Recently viewed