The RDRP Brass RR Suspension Mount for the Xray XB2 series of cars is a direct replacement for the kit's lightweight part. It adds valuable weight especially when running in low-traction conditions or when the track is getting bumpier. Machined from black-coated brass and sporting gold-colour chamfered edges the part weighs in at 15g which shifts the weight bias further back for improved traction and a more planed ride when running on bumpy tracks.