QA1 Proma Star Series Coil-Over Shock Absorber - Double Adj. - Bearing Mount - 11.125in/15in - Alum

SKU: QAPDD401
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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 QA1

QA1 engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full QA1 lineup with fast shipping and expert fitment support — order with confidence.

QA1 Proma Star Series Double Adjustable Coil-Over Shock Absorber

Elevate your vehicle's handling and stance with the QA1 Proma Star Series Coil-Over Shock Absorber. Designed for custom builds and performance upgrades, these shocks offer unparalleled adjustability and ride quality. The double-adjustable valving allows you to fine-tune compression and rebound independently, perfect for dialing in your car's performance for both street and track use.

Features & Benefits:

  • Adjustability: Double adjustable valving provides independent control over compression and rebound for precise tuning.
  • Mounting: Features a bearing mount for smooth, bind-free operation.
  • Construction: Lightweight and durable aluminum body for optimal performance and heat dissipation.
  • Dimensions: Extended length of 15 inches and compressed length of 11.125 inches, offering a 3.875-inch stroke.
  • Versatility: Ideal for custom chassis and suspension applications where direct-fit options are unavailable.
  • Ride Height Adjustment: Integrated hardware kit allows for quick and easy ride height adjustments to achieve the perfect stance.

Simply pair these QA1 shocks with a 2.5-inch diameter spring of the appropriate length and spring rate to complete your coil-over setup. Whether you're aiming for a lower ride height, improved cornering, or a more comfortable ride, the Proma Star series delivers. Experience superior performance and customization for your project. Find this and other premium suspension solutions at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About QA1

QA1 engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full QA1 lineup with fast shipping and expert fitment support — order with confidence.

QA1 Proma Star Series Double Adjustable Coil-Over Shock Absorber

Elevate your vehicle's handling and stance with the QA1 Proma Star Series Coil-Over Shock Absorber. Designed for custom builds and performance upgrades, these shocks offer unparalleled adjustability and ride quality. The double-adjustable valving allows you to fine-tune compression and rebound independently, perfect for dialing in your car's performance for both street and track use.

Features & Benefits:

  • Adjustability: Double adjustable valving provides independent control over compression and rebound for precise tuning.
  • Mounting: Features a bearing mount for smooth, bind-free operation.
  • Construction: Lightweight and durable aluminum body for optimal performance and heat dissipation.
  • Dimensions: Extended length of 15 inches and compressed length of 11.125 inches, offering a 3.875-inch stroke.
  • Versatility: Ideal for custom chassis and suspension applications where direct-fit options are unavailable.
  • Ride Height Adjustment: Integrated hardware kit allows for quick and easy ride height adjustments to achieve the perfect stance.

Simply pair these QA1 shocks with a 2.5-inch diameter spring of the appropriate length and spring rate to complete your coil-over setup. Whether you're aiming for a lower ride height, improved cornering, or a more comfortable ride, the Proma Star series delivers. Experience superior performance and customization for your project. Find this and other premium suspension solutions at GGCRACING.

Product Details

Product Description

About QA1

QA1 engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full QA1 lineup with fast shipping and expert fitment support — order with confidence.

QA1 Proma Star Series Double Adjustable Coil-Over Shock Absorber

Elevate your vehicle's handling and stance with the QA1 Proma Star Series Coil-Over Shock Absorber. Designed for custom builds and performance upgrades, these shocks offer unparalleled adjustability and ride quality. The double-adjustable valving allows you to fine-tune compression and rebound independently, perfect for dialing in your car's performance for both street and track use.

Features & Benefits:

  • Adjustability: Double adjustable valving provides independent control over compression and rebound for precise tuning.
  • Mounting: Features a bearing mount for smooth, bind-free operation.
  • Construction: Lightweight and durable aluminum body for optimal performance and heat dissipation.
  • Dimensions: Extended length of 15 inches and compressed length of 11.125 inches, offering a 3.875-inch stroke.
  • Versatility: Ideal for custom chassis and suspension applications where direct-fit options are unavailable.
  • Ride Height Adjustment: Integrated hardware kit allows for quick and easy ride height adjustments to achieve the perfect stance.

Simply pair these QA1 shocks with a 2.5-inch diameter spring of the appropriate length and spring rate to complete your coil-over setup. Whether you're aiming for a lower ride height, improved cornering, or a more comfortable ride, the Proma Star series delivers. Experience superior performance and customization for your project. Find this and other premium suspension solutions at GGCRACING.

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