Kyosho UM731 Aluminum Hard Main Chassis for RB6.6 - Track Upgrade  [KY-UM731]

Kyosho UM731 - Aluminum Hard Main Chassis(A7075T6/RB6.6
Price:
CAD$112.03
Brand:
Kyosho
Model:
KY-UM731
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Lightweight Racing Chassis Upgrade for RB6.6

The Kyosho UM731 Aluminum Hard Main Chassis delivers a focused performance upgrade to RB6.6 platforms, machined from A7075T6 for improved rigidity and race durability. Its solid build reduces unwanted flex to help drivers achieve more consistent handling lap after lap.

Benefits of A7075T6 Construction

A7075T6 is chosen for its high strength-to-weight ratio, offering resilience without excess mass. That toughness helps the chassis resist bending under load and keeps suspension geometry stable during hard use.

Engineered for Direct RB6.6 Fitment

Specifically produced to match RB6.6 geometry, the chassis lines up with original mounting points for straightforward installation. The precise fit minimises setup time so you can get back on track faster.

Specifications

  • Material: A7075T6 Aluminum
  • Compatibility: RB6.6 Series
  • Category: Spare Parts, Legendary Series

Ideal for competitive drivers wanting firmer handling and longer service life, the Kyosho UM731 Aluminum Hard Main Chassis is a practical upgrade for serious RC setups.
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.

Will this chassis fit RB6.6 variants with different electronics trays?

It is built to the RB6.6 specification and aligns with standard electronics layouts; minor tray or servo repositioning may be needed for non-stock setups.

How much stiffer is A7075T6 compared to the stock chassis?

A7075T6 provides a noticeable increase in stiffness and reduced flex versus typical stock alloys, which improves handling precision under load.

What maintenance should I perform on an aluminium chassis?

Keep the surface free of debris, check for bends after heavy impacts, and touch up anodised areas if needed to prevent corrosion and preserve fitment.

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