Strange Engineering 30-Spline Std. Series Spool — GM 12-Bolt 4-Series

SKU: BJHW_D1526
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Sale price$184.99
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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 Strange Engineering

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

Watch in action

Reliable Traction for GM 12-Bolt Rear Ends

The Strange Engineering 30-Spline Standard Series Spool is the perfect drivetrain upgrade for GM 12-bolt rear ends. Engineered to provide consistent, locked-in traction, this spool ensures that both rear wheels receive equal power, which is essential for consistent launch performance in drag racing. By replacing the stock differential, you eliminate the risk of spider gear failure and ensure that your drivetrain can handle the increased torque of a high-performance engine.

Why Choose the Standard Series Spool?

  • Spline Count: 30-spline design for increased axle strength.
  • Compatibility: Fits GM 12-bolt 4-series carriers.
  • Construction: High-strength steel for maximum durability under load.
  • Performance: Full-size spool design for superior straight-line traction.
  • Reliability: Proven performance in demanding racing environments.

Designed for the 4-series carrier, this spool is a robust solution for racers looking to improve their vehicle's consistency and durability. Its steel construction is precision-machined to ensure a perfect fit, minimizing vibration and maximizing power transfer to the track. Whether you are upgrading your street/strip machine or a dedicated drag car, this spool provides the strength needed to handle aggressive launches without compromise. Invest in the best for your GM 12-bolt rear end and experience the difference with quality parts from GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Strange Engineering

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

Watch in action

Reliable Traction for GM 12-Bolt Rear Ends

The Strange Engineering 30-Spline Standard Series Spool is the perfect drivetrain upgrade for GM 12-bolt rear ends. Engineered to provide consistent, locked-in traction, this spool ensures that both rear wheels receive equal power, which is essential for consistent launch performance in drag racing. By replacing the stock differential, you eliminate the risk of spider gear failure and ensure that your drivetrain can handle the increased torque of a high-performance engine.

Why Choose the Standard Series Spool?

  • Spline Count: 30-spline design for increased axle strength.
  • Compatibility: Fits GM 12-bolt 4-series carriers.
  • Construction: High-strength steel for maximum durability under load.
  • Performance: Full-size spool design for superior straight-line traction.
  • Reliability: Proven performance in demanding racing environments.

Designed for the 4-series carrier, this spool is a robust solution for racers looking to improve their vehicle's consistency and durability. Its steel construction is precision-machined to ensure a perfect fit, minimizing vibration and maximizing power transfer to the track. Whether you are upgrading your street/strip machine or a dedicated drag car, this spool provides the strength needed to handle aggressive launches without compromise. Invest in the best for your GM 12-bolt rear end and experience the difference with quality parts from GGCRACING.

Product Details

Product Description

About Strange Engineering

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

Watch in action

Reliable Traction for GM 12-Bolt Rear Ends

The Strange Engineering 30-Spline Standard Series Spool is the perfect drivetrain upgrade for GM 12-bolt rear ends. Engineered to provide consistent, locked-in traction, this spool ensures that both rear wheels receive equal power, which is essential for consistent launch performance in drag racing. By replacing the stock differential, you eliminate the risk of spider gear failure and ensure that your drivetrain can handle the increased torque of a high-performance engine.

Why Choose the Standard Series Spool?

  • Spline Count: 30-spline design for increased axle strength.
  • Compatibility: Fits GM 12-bolt 4-series carriers.
  • Construction: High-strength steel for maximum durability under load.
  • Performance: Full-size spool design for superior straight-line traction.
  • Reliability: Proven performance in demanding racing environments.

Designed for the 4-series carrier, this spool is a robust solution for racers looking to improve their vehicle's consistency and durability. Its steel construction is precision-machined to ensure a perfect fit, minimizing vibration and maximizing power transfer to the track. Whether you are upgrading your street/strip machine or a dedicated drag car, this spool provides the strength needed to handle aggressive launches without compromise. Invest in the best for your GM 12-bolt rear end and experience the difference with quality parts from GGCRACING.

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