LAZER ZX7.5 Tuning Center Shaft 57.5mm LAW84 by Kyosho  [KY-LAW84]

Kyosho LAW84 - Aluminum Center Shaft (57.5/7075/ZX7.5)
Price:
AUD$22.18
Brand:
Kyosho
Model:
KY-LAW84
GTIN:
4548565524532
Condition:
Brand New
Quantity Discount
Unit Price You Save
2 $17.89 each $8.59 or 19%
3+ $17.00 each $15.54 or 23%
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Tuning Impact of the LAW84 on LAZER ZX7.5

The Kyosho LAW84 centre shaft is a 57.5mm 7075 aluminium unit made for use with the LAZER ZX7.5 driveline as an aftermarket replacement. Its lightweight yet stiff construction provides a predictable rotating mass for setup adjustments.

When tuning, the shaft helps stabilise centre rotational behaviour; use it while adjusting center differential bias and drivetrain compliance to assess how changes affect traction and steering feel. Verify axial alignment after each change to keep responses consistent.

For track validation the LAW84 lets you compare rotational stiffness and transient response between runs, aiding iterative setup work to dial in handling characteristics without altering chassis geometry.
Remark :
Due to limited stock availability, please notice that some Kyosho items may have to order from the factory and the ready time is around 4-6 weeks. Customer purchases the item is assumed to accept the waiting time which allows us to order directly from the manufacturer if the item is out of our warehouse.

How does this shaft change rotational inertia?

The 7075 shaft offers a balance of low mass and stiffness, which can slightly reduce rotational inertia compared with heavier steel options, yielding crisper transient responses.

Can it affect differential tuning?

Yes; because the centre shaft interfaces with the differential assembly, its stiffness and fit can influence how centre bias and rotational transfer feel under throttle and cornering.

Is there a break-in procedure for tuning use?

Run a few short test sessions checking for consistent behaviour, then re-inspect bearings and clearances before finalising geometry and differential settings.

What tuning steps benefit most from this shaft?

Centre bias adjustments, transient throttle mapping, and fine-tuning drivetrain compliance all become easier to evaluate thanks to the shaft's consistent rotational properties.

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