Coan Engineering Input Shaft 300M Alloy — TH400 OEM Drum Upgrade

SKU: BJBP_COA-22810
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Unmatched Strength for TH400 TransmissionsWhen pushing your TH400 transmission to ...Read More

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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

Unmatched Strength for TH400 Transmissions

When pushing your TH400 transmission to the limit, the input shaft is often the first point of failure. The Coan Engineering 300M alloy input shaft is the ultimate upgrade for high-horsepower engines. Crafted from aerospace-grade 300M steel, this shaft provides the torsional strength required to handle massive torque loads without twisting or snapping.

Technical Features

  • Material: Premium 300M Alloy Steel for maximum durability.
  • Design: Engineered for use with OEM drums.
  • Spline Configuration: Stock spline count for easy installation.
  • Performance: Designed to eliminate common failure points in high-torque applications.

This input shaft is a must-have for drag racers and performance enthusiasts who demand reliability. By upgrading to 300M alloy, you significantly increase the safety margin of your drivetrain, allowing you to launch harder and shift more aggressively with confidence. Each shaft is precision-machined to exacting tolerances, ensuring a perfect fit and smooth operation within your transmission assembly. Don't let a weak shaft end your race day prematurely; invest in the proven strength of Coan Engineering components available through GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

Unmatched Strength for TH400 Transmissions

When pushing your TH400 transmission to the limit, the input shaft is often the first point of failure. The Coan Engineering 300M alloy input shaft is the ultimate upgrade for high-horsepower engines. Crafted from aerospace-grade 300M steel, this shaft provides the torsional strength required to handle massive torque loads without twisting or snapping.

Technical Features

  • Material: Premium 300M Alloy Steel for maximum durability.
  • Design: Engineered for use with OEM drums.
  • Spline Configuration: Stock spline count for easy installation.
  • Performance: Designed to eliminate common failure points in high-torque applications.

This input shaft is a must-have for drag racers and performance enthusiasts who demand reliability. By upgrading to 300M alloy, you significantly increase the safety margin of your drivetrain, allowing you to launch harder and shift more aggressively with confidence. Each shaft is precision-machined to exacting tolerances, ensuring a perfect fit and smooth operation within your transmission assembly. Don't let a weak shaft end your race day prematurely; invest in the proven strength of Coan Engineering components available through GGCRACING.

Product Details

Product Description

Unmatched Strength for TH400 Transmissions

When pushing your TH400 transmission to the limit, the input shaft is often the first point of failure. The Coan Engineering 300M alloy input shaft is the ultimate upgrade for high-horsepower engines. Crafted from aerospace-grade 300M steel, this shaft provides the torsional strength required to handle massive torque loads without twisting or snapping.

Technical Features

  • Material: Premium 300M Alloy Steel for maximum durability.
  • Design: Engineered for use with OEM drums.
  • Spline Configuration: Stock spline count for easy installation.
  • Performance: Designed to eliminate common failure points in high-torque applications.

This input shaft is a must-have for drag racers and performance enthusiasts who demand reliability. By upgrading to 300M alloy, you significantly increase the safety margin of your drivetrain, allowing you to launch harder and shift more aggressively with confidence. Each shaft is precision-machined to exacting tolerances, ensuring a perfect fit and smooth operation within your transmission assembly. Don't let a weak shaft end your race day prematurely; invest in the proven strength of Coan Engineering components available through GGCRACING.

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