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1-1/4 x 38 inch  Tubular Steel Rear Go Kart Axle
732A 1-1/4" x 38 LongTubular Steel Rear Axle
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1-1/4 x 38 inch Tubular Steel Rear Go Kart Axle

Part Number: 732-A
Online Price: $86.49
1-1/4" x 38" Chromoly Tubular Go-Kart Rear Axle
Availability: In Stock.

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Description

1-1/4" x 38" Chromoly Tubular Steel Rear Go-Kart Axle – Center Keyed with Snap Ring Grooves


Upgrade your go-kart or racing mower with this 1-1/4" x 38" tubular steel rear axle, precision-engineered from high-strength chromoly steel for performance, durability, and optimal chassis feedback. This axle is center-keyed on both sides and includes snap ring grooves on each end, meeting most kart racing sanctioning body requirements.


The 0.190" wall thickness provides a strong yet lightweight build, offering an excellent balance of stiffness and flex—essential for handling and traction tuning in performance setups.


Axle Specifications:

  • Material: Chromoly Steel
  • Diameter: 1-1/4"
  • Length: 38" (overall)
  • Wall Thickness: 0.190"
  • Keyways: Center-keyed with offset cutouts (1/4" x 1/4" axle keys)
  • Snap Ring Grooves: Yes – both ends


Performance Insight:

Axle diameter is often more important than wall thickness when it comes to stiffness. Compared to a solid 1" axle, this tubular 1-1/4" axle provides greater rigidity and strength while reducing rotational mass. A stiffer axle improves rear grip and traction, making it ideal for high-horsepower racing applications.


However, too much stiffness can reduce rear-end chassis flex, potentially causing understeer (push) or binding in certain setups. Choose your axle based on the desired handling balance for your kart or lawnmower build.


Ideal For:

  • Racing go-karts
  • Performance lawnmowers
  • Custom live axle setups
  • Drift trikes or DIY vehicles requiring 1-1/4" components

FAQ

1. What size key does this axle use?

This axle uses 1/4" x 1/4" axle keys, with center-offset keyways machined halfway on both sides.


2. Are the snap ring grooves required for kart racing?

Yes. Most karting sanctioning bodies require snap ring grooves to safely retain wheel hubs and components. This axle meets those requirements.


3. How strong is a tubular axle compared to a solid axle?

While it’s tubular, this chromoly steel axle offers greater strength and rigidity than many solid axles—especially those made from softer materials like mild steel. The 1-1/4" diameter adds stiffness that improves rear-end grip and overall performance.


4. Will this axle fit my go-kart or racing lawnmower?

This axle is compatible with any chassis designed for a 1-1/4” diameter live axle. Make sure your hubs, bearings, sprockets, and brake components also match the 1.25" spec.


5. What types of builds is this axle best for?

This axle is ideal for:

  • High-power go-karts
  • Racing lawnmowers
  • Drift trikes
  • DIY and custom projects requiring a strong, center-keyed axle

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