3Racing SAK-M4S37 Sakura M4 Racing Main Shaft  [SAK-M4S37]

3Racing Sakura M Main Shaft M5 x 25 - SAK-M4S37
Price:
USD$3.20
Brand:
3Racing
Model:
SAK-M4S37
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Racing Grade Main Shaft for Sakura M4

The 3Racing Sakura M4 Main Shaft SAK-M4S37 is manufactured to deliver reduced runout and improved torsional response for race oriented builds. Its consistent geometry supports more predictable torque transfer and improved lap-to-lap repeatability.

Technical Advantages

Designed with attention to concentricity and surface finish, this main shaft decreases drivetrain lash and supports better gear engagement. That results in smoother acceleration transitions and reduced fatigue on adjacent drivetrain components.

Service and Installation Notes

Install into existing Sakura M4 mounting points without modifications. For racing use, inspect bearing preload and gear mesh after installation, and pair the shaft with maintained bearings and fresh lubricants to fully capitalise on its performance characteristics.

What setup changes improve performance with this shaft?

Ensure optimal gear mesh and low bearing play. Small adjustments to pinion alignment and checking differential preload will maximise the shaft's benefits.

Is additional machining required for aftermarket diffs?

The shaft is compatible with standard Sakura M4 differentials. If using oversized or nonstandard diff cases, verify internal clearances before fitting to avoid interference.

Recommended inspection interval for race use?

Inspect shaft runout and bearing condition after intense events and perform quick checks between mains to detect any early wear affecting performance.