Spec-R XB4 graphite A-arm stiffeners
Spec-R now have a graphite A-arm stiffener set for the Xray’s XB4 buggies available. Including a total of four carbon fibre plates to reinforce the front and rear suspension arms the set comes in handy when running the XB4 line of buggies on very high-bite tracks or in high ambient temperatures as using stiffer suspension arms results in a more precise handling especially in chicanes. Included with the set comes suitable mounting hardware.
Source: Spec-R [spec-r.com]