Wehrs Machine & Racing Products Screw Jack 1in-8 UNC 12in Long Swivel Cup — Adjustable Suspension Bolt

SKU: GCNM_WM28812B
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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 Wehrs Machine & Racing Products

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

Extended Reach Suspension Adjustment

When your suspension setup requires a longer adjustment range, the Wehrs Machine 1in-8 UNC 12in Screw Jack is the ideal solution. Providing two extra inches of length compared to standard units, this jack bolt allows for significant ride height modifications without sacrificing structural integrity. It is engineered for racers who demand precision and durability in their suspension components.

Performance Benefits

  • Extended Length: 12 inches for maximum adjustability
  • Thread Specs: 1in-8 UNC
  • Durable Build: High-strength steel construction
  • Finish: Black powder coat
  • Swivel Cup: Included for proper spring seating

This 12-inch screw jack is designed to handle the high loads associated with competitive racing. The swivel cup is a standout feature, allowing the spring to maintain a flat seat even as the suspension cycles through its travel. This prevents binding and ensures that your spring rates remain predictable and consistent. The 1-inch thread diameter provides a robust platform for heavy-duty applications, while the black powder coat finish ensures that the threads remain protected from the elements. Installing this unit is straightforward, thanks to the included slic pin, making it a convenient upgrade for any race car chassis. By integrating this high-quality hardware, you gain the ability to make rapid, accurate adjustments to your vehicle's corner weights, directly impacting your lap times and overall handling. Experience the difference that precision-engineered suspension parts make at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Wehrs Machine & Racing Products

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

Extended Reach Suspension Adjustment

When your suspension setup requires a longer adjustment range, the Wehrs Machine 1in-8 UNC 12in Screw Jack is the ideal solution. Providing two extra inches of length compared to standard units, this jack bolt allows for significant ride height modifications without sacrificing structural integrity. It is engineered for racers who demand precision and durability in their suspension components.

Performance Benefits

  • Extended Length: 12 inches for maximum adjustability
  • Thread Specs: 1in-8 UNC
  • Durable Build: High-strength steel construction
  • Finish: Black powder coat
  • Swivel Cup: Included for proper spring seating

This 12-inch screw jack is designed to handle the high loads associated with competitive racing. The swivel cup is a standout feature, allowing the spring to maintain a flat seat even as the suspension cycles through its travel. This prevents binding and ensures that your spring rates remain predictable and consistent. The 1-inch thread diameter provides a robust platform for heavy-duty applications, while the black powder coat finish ensures that the threads remain protected from the elements. Installing this unit is straightforward, thanks to the included slic pin, making it a convenient upgrade for any race car chassis. By integrating this high-quality hardware, you gain the ability to make rapid, accurate adjustments to your vehicle's corner weights, directly impacting your lap times and overall handling. Experience the difference that precision-engineered suspension parts make at GGCRACING.

Product Details

Product Description

About Wehrs Machine & Racing Products

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

Extended Reach Suspension Adjustment

When your suspension setup requires a longer adjustment range, the Wehrs Machine 1in-8 UNC 12in Screw Jack is the ideal solution. Providing two extra inches of length compared to standard units, this jack bolt allows for significant ride height modifications without sacrificing structural integrity. It is engineered for racers who demand precision and durability in their suspension components.

Performance Benefits

  • Extended Length: 12 inches for maximum adjustability
  • Thread Specs: 1in-8 UNC
  • Durable Build: High-strength steel construction
  • Finish: Black powder coat
  • Swivel Cup: Included for proper spring seating

This 12-inch screw jack is designed to handle the high loads associated with competitive racing. The swivel cup is a standout feature, allowing the spring to maintain a flat seat even as the suspension cycles through its travel. This prevents binding and ensures that your spring rates remain predictable and consistent. The 1-inch thread diameter provides a robust platform for heavy-duty applications, while the black powder coat finish ensures that the threads remain protected from the elements. Installing this unit is straightforward, thanks to the included slic pin, making it a convenient upgrade for any race car chassis. By integrating this high-quality hardware, you gain the ability to make rapid, accurate adjustments to your vehicle's corner weights, directly impacting your lap times and overall handling. Experience the difference that precision-engineered suspension parts make at GGCRACING.

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