I'm gathering a whole bunch of parts for my Nissan 180sx before I go for certification. I would like to know if these items can be certified for road use and what the process would be apart from the standard inspection done at the time of certification.
The parts are all made by Gktech and have a very good reputation as far as I am aware.
The reasoning behind all these is to have as much adjustability as possible so I can adjust bump steer, camber curves, castor etc. The car will be lowered (but not excessively) and I will be using this car for grip type track days and so on (not drift)
Number 1: They don't list a material spec for these arms, which will be something your certifier will want to know.
Number 2: Again, try and find material spec. This one says chromolly, which is a good start, but what grade?
Number 3: These should be ok - pending certifier assessment.
Number 4: These would require Design approval, which means you'd be best to include the whole range of products you've listed here through that for a more thorough engineering analysis. You can find the info relating to design approvals here: www.lvvta.org.nz/approvals.html#design
Number 5: These would also require design approval. However, there's mention about 64mm bump steer correction tie rods. If these are tie rod extenders that are not pictured here, then there's a serious flaw with the design. Why would they not put the tie rod position into the correct place when designing the component? (Unless we are reading that wrong).
Number 6: These are not suitable for road use. They have been through design approval previously and a number of design flaws have been found with them.
I hope that helps, but feel free to ask any questions, either here or via email@example.com
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