Kyosho 74031-04 Piston Cylinder Set KE21SP Engine Rebuild  [KY-74031-04]

Kyosho 74031-04 - Piston & Cylinder Set (KE21SP)
Price:
AUD$66.55
Brand:
Kyosho
Model:
KY-74031-04
Condition:
Brand New
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KE21SP Internal Replacement Kit

The Kyosho 74031-04 Piston & Cylinder Set fits the KE21SP engine and provides a reliable replacement option when original parts are worn. It is aimed at owners wanting to refresh engine internals without complex modifications.

Why Fit This Piston and Cylinder

The set is machined to KE21SP specifications to ensure a snug fit and minimise the need for additional tuning. Replacing the piston and cylinder can regain lost power and reduce the risk of excessive wear on connecting parts.

Assembly Recommendations

Clean all mating faces thoroughly and remove old sealant or grit before assembly. Lubricate bearing and sliding surfaces lightly, and run a staged break-in routine to bed in new components safely.
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.

Is the Kyosho 74031-04 interchangeable with other Kyosho engine parts?

This set is specific to the KE21SP layout and is not intended as a drop-in for other engine families. Always confirm model compatibility before purchase.

How should I inspect the old piston and cylinder before replacing?

Check for scoring, uneven wear, and loss of compression. If corrosion or deep scratches are present, replacement is recommended.

Will installing new internals affect engine tuning?

You may need minor carburettor adjustments after fitting new parts, as compression and response can change slightly. Test under controlled conditions and tune as required.

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