When optimising an XRAY T4 2020 for lap time, the XRAY 302174-H long left front suspension arm is a practical upgrade to increase stability and front-end grip. The arm extends 7mm beyond shorter variants to boost traction on low-grip layouts while maintaining control on higher-traction surfaces.
The arm retains the standard shock hole and adds a dedicated 4mm lower shock mount to widen tuning options. Use with the optional lower ULP shock tower to lower the centre of gravity, stabilise the car through tight sequences, and improve steering reaction.
Manufactured from a hard composite blend, this arm is designed to be light and resilient for racing conditions. It features an anti-roll bar mount and is slightly softer than graphite, which can help the front gain more traction in very-low to low traction scenarios.
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