Owners of older XRAY XB Series models can use the 351182 Brass Rear Upright Weight Set to add a compact 15g of mass and lower the centre of gravity. The brass construction gives consistent weight and helps steady the rear end of vintage chassis. It is a simple setup change that benefits both club racing and casual track sessions.
Mounting the brass under the rear upright shifts weight slightly rearwards and reduces body roll, which can make turn-in more predictable and improve mid-corner grip. The change is subtle but useful when dialling in balance for varied track surfaces.
The pack is intended for older XB Series variants and matches the rear upright mounting points. Fitting is straightforward and can be completed with basic tools, making it accessible for newcomers and experienced tuners alike.
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