AFCO Racing 21 Series Monotube Shock C3-R12 — 7in Stroke Aluminum

SKU: DJGV_2173-12
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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

Precision Damping with AFCO 21 Series Monotube Shocks

The AFCO Racing 21 Series Monotube Shock is the gold standard for racers seeking precise damping control and heat dissipation. Featuring a 7-inch stroke and specialized C3-R12 valving, this shock is designed to provide consistent performance throughout the entire race. The threaded aluminum body allows for easy ride-height adjustments, while the blue anodized finish provides a professional look and added durability against the elements.

Performance Features

  • Series: 21 Series Monotube
  • Stroke: 7 inches
  • Valving: C3-R12
  • Compressed Length: 14.21 inches
  • Extended Length: 20.15 inches
  • Construction: Threaded aluminum
  • Finish: Blue anodized

Monotube technology offers superior gas-pressure management compared to twin-tube designs, ensuring that your tires maintain optimal contact with the track surface. By reducing aeration and maintaining consistent oil viscosity, these shocks provide the stability needed to shave seconds off your lap times. The lightweight aluminum construction not only reduces unsprung weight but also acts as a heat sink to prevent shock fade during long feature races. Trust in the engineering excellence of AFCO for your next build. Find the best racing suspension solutions at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

Precision Damping with AFCO 21 Series Monotube Shocks

The AFCO Racing 21 Series Monotube Shock is the gold standard for racers seeking precise damping control and heat dissipation. Featuring a 7-inch stroke and specialized C3-R12 valving, this shock is designed to provide consistent performance throughout the entire race. The threaded aluminum body allows for easy ride-height adjustments, while the blue anodized finish provides a professional look and added durability against the elements.

Performance Features

  • Series: 21 Series Monotube
  • Stroke: 7 inches
  • Valving: C3-R12
  • Compressed Length: 14.21 inches
  • Extended Length: 20.15 inches
  • Construction: Threaded aluminum
  • Finish: Blue anodized

Monotube technology offers superior gas-pressure management compared to twin-tube designs, ensuring that your tires maintain optimal contact with the track surface. By reducing aeration and maintaining consistent oil viscosity, these shocks provide the stability needed to shave seconds off your lap times. The lightweight aluminum construction not only reduces unsprung weight but also acts as a heat sink to prevent shock fade during long feature races. Trust in the engineering excellence of AFCO for your next build. Find the best racing suspension solutions at GGCRACING.

Product Details

Product Description

Precision Damping with AFCO 21 Series Monotube Shocks

The AFCO Racing 21 Series Monotube Shock is the gold standard for racers seeking precise damping control and heat dissipation. Featuring a 7-inch stroke and specialized C3-R12 valving, this shock is designed to provide consistent performance throughout the entire race. The threaded aluminum body allows for easy ride-height adjustments, while the blue anodized finish provides a professional look and added durability against the elements.

Performance Features

  • Series: 21 Series Monotube
  • Stroke: 7 inches
  • Valving: C3-R12
  • Compressed Length: 14.21 inches
  • Extended Length: 20.15 inches
  • Construction: Threaded aluminum
  • Finish: Blue anodized

Monotube technology offers superior gas-pressure management compared to twin-tube designs, ensuring that your tires maintain optimal contact with the track surface. By reducing aeration and maintaining consistent oil viscosity, these shocks provide the stability needed to shave seconds off your lap times. The lightweight aluminum construction not only reduces unsprung weight but also acts as a heat sink to prevent shock fade during long feature races. Trust in the engineering excellence of AFCO for your next build. Find the best racing suspension solutions at GGCRACING.

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