77.5mm 7075 Center Shaft for LAZER ZX - Kyosho LAW78B  [KY-LAW78B]

Kyosho LAW78B - Aluminum Center Shaft (77.5/7075/ZX7.5)
Price:
£0.00
Brand:
Kyosho
Model:
KY-LAW78B
GTIN:
4548565524518
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Compatibility and fit details for LAZER ZX

The Kyosho LAW78B center shaft is a 77.5mm 7075 aluminium replacement intended for LAZER ZX series on-road RC models, supplied as an aftermarket option to enhance center driveline rigidity. Confirm the LAW78B reference when matching to your ZX variant.

As a core driveline element the shaft transfers loads between center gears; choosing aluminium alters stiffness and can change the way forces are transmitted through the gearbox, so perform alignment and bearing checks during fitting. Keep mating surfaces clean and lubricated with products suited to metal contacts.

Fitment checklist: ensure the LAZER ZX series compatibility of LAW78B for your chassis, remove the original shaft with care to avoid damaging neighboring bearings, and secure retaining hardware to the recommended torque values. Re-evaluate mesh and drivetrain behavior after installation.
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 do I confirm this is the correct part for my LAZER ZX model?

Match the LAW78B designation and 77.5mm specification against your model's parts list or service documentation. If in doubt, compare measurements directly to the shaft being replaced.

Will altering shaft material affect other components?

Yes. A stiffer centre shaft can shift load patterns to adjacent gears and bearings. After fitting, check bearing preload and gear mesh to ensure no new stresses have been introduced.

What measurement tolerances should I verify?

Confirm the 77.5mm overall dimension and verify spline engagement depth and bearing seat diameters match the replacement. Small deviations can affect alignment and lead to premature wear.

Any setup tips after installation?

After installing the shaft, run the drivetrain at low speed to listen for binding or unusual noise, then recheck mesh and bearing temperatures during a short test run before full use.

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