XRAY 363123-H Hard Rear Left Suspension Arm for XB4  [XR-363123-H]

XRAY 363123-H - Composite Long Suspension Arm Rear Lower Left - Hard
Price:
AUD$18.07
Brand:
XRAY
Model:
XR-363123-H
Condition:
Brand New
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Stiffer Rear Arm for Track-Focused Setups

The XRAY 363123-H Hard Composite Rear Left Suspension Arm is a track-focused replacement part for pilots chasing consistent rear-end behaviour. Made for the XB4 2020 Specs, it upgrades length and material to tighten handling and resist wear.

2mm Extension to Boost Rear Traction

The arm adds 2mm over the factory piece to help the rear gain more traction in lower-grip conditions while still being predictable on higher-traction surfaces. Its shape supports different shock mounting positions so you can tweak roll and balance.

Durable Composite for Race Use

Constructed from a high-grade composite, the XRAY 363123-H combines rigidity and toughness to deliver crisp steering feel and dependable durability. It is especially suited to medium- and high-traction tracks where consistent feedback is key.

Compatibility and Setup Advice

Specifically for the XB4 2020 Specs, this hard arm must be used with the matching #363113-H hard lower right arm. You can mount the rear shock either in front of or behind the rear shock tower to refine handling for different track styles.
Remark :
Due to limited stock availability, please notice that some XRAY 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 tune with the different shock positions?

Moving the shock forward typically adds rear bite and reduces rotation, while mounting it behind the tower can loosen the rear and increase rotation; try small changes and test laps to feel the difference.

Does this arm require special hardware to install?

Installation uses standard suspension hardware for the XB4 2020 Specs; ensure you pair it with the designated #363113-H hard lower right arm for correct alignment.

Will this improve lap consistency?

On medium- and high-traction tracks the stiffer, longer arm helps maintain rear grip and predictable handling, which often translates to more consistent laps when matched with proper setup.

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