Auto Racing Products 12-Point Chromoly Bolt Kit - 8mm x 1.25 x 50mm (Set of 5)

SKU: BQDN_671-1007
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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 Auto Racing Products

ARP (Automotive Racing Products) makes the strongest fasteners in motorsport — head studs, main studs, rod bolts, and flexplate bolts used by every Formula 1, NHRA, NASCAR, and championship motorsport program. Aerospace-grade alloys, exact-fit machining.

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Maximum Engagement: ARP 8mm x 1.25 x 50mm 12-Point Chromoly Bolt Kit

For the most demanding applications requiring significant thread engagement and unparalleled strength, the Auto Racing Products (ARP) 8mm x 1.25 x 50mm 12-point chromoly bolt kit is the ultimate choice. These high-performance fasteners are meticulously engineered to provide superior clamping force and exceptional resistance to stretching, ensuring the absolute integrity of your critical components under the most extreme conditions. This universal set of five bolts is an essential upgrade for any project demanding robust, extra-long hardware.

Built for Extreme Performance and Longevity

  • Ultra-Strong Chromoly Steel: Forged from premium chromoly steel, these bolts deliver outstanding tensile strength and fatigue resistance, making them indispensable for high-stress environments.
  • Ergonomic 12-Point Head: The 10mm 12-point head design ensures optimal torque transfer and ease of installation, especially beneficial in tight or hard-to-reach areas, minimizing the risk of tool slippage.
  • Protective Black Oxide Coating: Each bolt is treated with a durable black oxide finish, providing excellent resistance against corrosion and wear, preserving its structural integrity and aesthetic appeal.
  • Extra-Long 50mm Length: With an 8mm diameter, 1.25 thread pitch, and an extended 50mm length, these bolts are perfectly suited for applications requiring deep thread engagement and secure fastening.
  • Universal Compatibility: Designed for broad application, making them ideal for a wide range of high-performance automotive, marine, and industrial fastening needs where maximum length and strength are critical.

The Unmatched Quality of ARP Fasteners

Auto Racing Products is globally recognized for its unwavering commitment to producing the highest quality fasteners in the motorsports and performance industries. Their dedication to utilizing advanced materials and precision manufacturing techniques ensures that every bolt delivers unparalleled performance and longevity. When you choose ARP, you're investing in components that provide maximum security and peace of mind for your most critical assemblies. Trust ARP for the ultimate in fastening solutions.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Auto Racing Products

ARP (Automotive Racing Products) makes the strongest fasteners in motorsport — head studs, main studs, rod bolts, and flexplate bolts used by every Formula 1, NHRA, NASCAR, and championship motorsport program. Aerospace-grade alloys, exact-fit machining.

Watch in action

Maximum Engagement: ARP 8mm x 1.25 x 50mm 12-Point Chromoly Bolt Kit

For the most demanding applications requiring significant thread engagement and unparalleled strength, the Auto Racing Products (ARP) 8mm x 1.25 x 50mm 12-point chromoly bolt kit is the ultimate choice. These high-performance fasteners are meticulously engineered to provide superior clamping force and exceptional resistance to stretching, ensuring the absolute integrity of your critical components under the most extreme conditions. This universal set of five bolts is an essential upgrade for any project demanding robust, extra-long hardware.

Built for Extreme Performance and Longevity

  • Ultra-Strong Chromoly Steel: Forged from premium chromoly steel, these bolts deliver outstanding tensile strength and fatigue resistance, making them indispensable for high-stress environments.
  • Ergonomic 12-Point Head: The 10mm 12-point head design ensures optimal torque transfer and ease of installation, especially beneficial in tight or hard-to-reach areas, minimizing the risk of tool slippage.
  • Protective Black Oxide Coating: Each bolt is treated with a durable black oxide finish, providing excellent resistance against corrosion and wear, preserving its structural integrity and aesthetic appeal.
  • Extra-Long 50mm Length: With an 8mm diameter, 1.25 thread pitch, and an extended 50mm length, these bolts are perfectly suited for applications requiring deep thread engagement and secure fastening.
  • Universal Compatibility: Designed for broad application, making them ideal for a wide range of high-performance automotive, marine, and industrial fastening needs where maximum length and strength are critical.

The Unmatched Quality of ARP Fasteners

Auto Racing Products is globally recognized for its unwavering commitment to producing the highest quality fasteners in the motorsports and performance industries. Their dedication to utilizing advanced materials and precision manufacturing techniques ensures that every bolt delivers unparalleled performance and longevity. When you choose ARP, you're investing in components that provide maximum security and peace of mind for your most critical assemblies. Trust ARP for the ultimate in fastening solutions.

Product Details

Product Description

About Auto Racing Products

ARP (Automotive Racing Products) makes the strongest fasteners in motorsport — head studs, main studs, rod bolts, and flexplate bolts used by every Formula 1, NHRA, NASCAR, and championship motorsport program. Aerospace-grade alloys, exact-fit machining.

Watch in action

Maximum Engagement: ARP 8mm x 1.25 x 50mm 12-Point Chromoly Bolt Kit

For the most demanding applications requiring significant thread engagement and unparalleled strength, the Auto Racing Products (ARP) 8mm x 1.25 x 50mm 12-point chromoly bolt kit is the ultimate choice. These high-performance fasteners are meticulously engineered to provide superior clamping force and exceptional resistance to stretching, ensuring the absolute integrity of your critical components under the most extreme conditions. This universal set of five bolts is an essential upgrade for any project demanding robust, extra-long hardware.

Built for Extreme Performance and Longevity

  • Ultra-Strong Chromoly Steel: Forged from premium chromoly steel, these bolts deliver outstanding tensile strength and fatigue resistance, making them indispensable for high-stress environments.
  • Ergonomic 12-Point Head: The 10mm 12-point head design ensures optimal torque transfer and ease of installation, especially beneficial in tight or hard-to-reach areas, minimizing the risk of tool slippage.
  • Protective Black Oxide Coating: Each bolt is treated with a durable black oxide finish, providing excellent resistance against corrosion and wear, preserving its structural integrity and aesthetic appeal.
  • Extra-Long 50mm Length: With an 8mm diameter, 1.25 thread pitch, and an extended 50mm length, these bolts are perfectly suited for applications requiring deep thread engagement and secure fastening.
  • Universal Compatibility: Designed for broad application, making them ideal for a wide range of high-performance automotive, marine, and industrial fastening needs where maximum length and strength are critical.

The Unmatched Quality of ARP Fasteners

Auto Racing Products is globally recognized for its unwavering commitment to producing the highest quality fasteners in the motorsports and performance industries. Their dedication to utilizing advanced materials and precision manufacturing techniques ensures that every bolt delivers unparalleled performance and longevity. When you choose ARP, you're investing in components that provide maximum security and peace of mind for your most critical assemblies. Trust ARP for the ultimate in fastening solutions.

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