The GKTECH S13 240sx weld in power brace has been designed to help to reinforce your K-frame where it needs it. Laser cut and 2mm thick steel for strength this brace makes reinforcement of the K-frame easier than attempting to do it yourself. Combine with our K-frame plates (sold separately) for the complete solution. Vehicle Compatibility: - Nissan S13 240sx - Nissan S13 Silvia - Nissan S14 240sx - Nissan S15 Silvia NOTE: as the name suggests, this is to be welded in place. It is not a bolt in piece and must be welded.