XRAY 303364 Composite Rear Upright - Hard 1-Hole (Competition Spec)  [XR-303364]

XRAY 303364 Composite Upright 0 Outboard Toe - Hard - 1-Hole
Price:
£8.77
Brand:
XRAY
Model:
XR-303364
Condition:
Brand New
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Improve Rear Stability with XRAY 303364 Composite Rear Upright

The XRAY 303364 Composite Rear Upright is intended for racers seeking consistent rear traction on high-grip circuits. With a built-in 0 deg outboard toe and a one-hole layout, it promotes steady handling and predictable turn-in on long, flowing corners.

Hard Composite Suited to Foam-Tire Racing

This upright uses a hard "H" composite for extra rigidity, optimised for foam-tire setups while remaining usable with rubber tyres. It incorporates small 5x10x4 bearings to keep unsprung weight down and support smoother suspension movement and vehicle stability.

Easy Roll Centre Adjustment with Shims

Roll centre tuning is straightforward: place shims between the upright and the turnbuckle ball joint to alter roll characteristics. This lets competitors adapt the rear-end balance quickly to suit track grip and personal setup preferences.
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.

Can I use the XRAY 303364 on both rear uprights?

Yes. The part works on either side of the rear and installs using the standard fixing points.

Is it worth fitting firmer uprights for foam tyres?

Firmer uprights can improve steering precision on high-grip foam tyres, but tuning with shims and tyre choice is key to avoid oversteer.

What maintenance does this upright need?

Inspect the 5x10x4 bearings for smooth spin and replace when worn. Check for any cracks in the composite after heavy impacts and re-shim as track conditions change.

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