The RDRP Brass FF Suspension Mount for the Xray XB4 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 13g which shifts the weight bias further to the front which leads to an easier to drive car especially in low traction conditions. The FF mount is a direct replacement and usable with the Xray suspension inserts.