XRAY 303181-M X4 Medium CFF Left Rear Lower Arm Carbon-Fusion  [XR-303181-M]

XRAY 303181-M - X4 Cff Carbon-fiber Fusion Rear Lower Arm - Medium - Left
Price:
£21.60
Brand:
XRAY
Model:
XR-303181-M
Condition:
Brand New
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XRAY X4 Medium Left Rear Lower Arm with Carbon-Fibre Fusion

The XRAY 303181-M CFF rear lower arm features a bonded carbon fibre insert inside a composite body to create a single, precision suspension arm for smooth circuit racing. This fusion construction delivers consistent flex characteristics that assist grip and steering feel.

Design intent and material choice

Combining premium graphite with engineered composite results in an arm that is both light and tough, with medium stiffness tuned to improve mechanical traction while resisting routine track impacts.

Behaviour on smooth race surfaces

The medium version is softer than hard arms, allowing more tyre compliance which can help with cornering stability and traction on polished surfaces where tyre heating alters grip levels.

Compatibility and setup considerations

Engineered for the left rear of XRAY X4 models, this arm fits directly to the chassis and works with common tuning adjustments such as toe, camber and droop to dial in handling.
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 should I alter setup when fitting the XRAY 303181-M?

Start with your usual baseline and expect to fine tune camber and droop; the extra compliance tends to call for slightly firmer droop settings to keep the rear predictable.

Is this part suitable for club racing and practice sessions?

Yes, the medium CFF arm is well suited to both club events and practice sessions where track conditions vary and consistent grip is desirable.

Can I upgrade other suspension parts to match this arm?

Drivers often pair CFF arms with stiffer anti-roll bars or different shock oils to balance the extra compliance and achieve a preferred handling balance.

What inspections should I do after a crash?

Check the bonded area for delamination and inspect pivot holes for elongation; replace the arm if any structural compromise is detected.

Does the medium arm affect tyre wear?

It can change load distribution slightly, so monitor tyre wear after fitting and adjust camber or toe if you notice uneven degradation.

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