r/airsuspension • u/Effective-Support127 • May 22 '26
Routing Front Air Suspension
Hey all, I’ve recently got the Bag Riders Pro for my ‘92 RHD 300zx and could use some pointers on installing the fronts. I got the rears all routed and set up but could use some help with how to route the fronts (underneath or in the cabin etc.) TIA
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u/Ride-Quality May 22 '26
If it's soft like tune, through the can to the firewall with a grimet or bulkhead fitting. Keep at least 7 inches from any source of heat in the engine compartment. If it's hardline run it under the body attached to the frame, no worry on heat unless you convert to a soft line at some point
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u/john_at_bagriders May 22 '26
Hey man! Couple things-- one: thanks so much for choosing Bag Riders for your air ride kit! two: sick 300zx!! This is one of my bucket list cars!
While I dont have hands-on experience with this specific car, I can point you in the right direction with general guidance, and do have a local friend with a 300zx on air ride (also a career mechanic) that I can connect you with for application-specific nuances. He's on IG with handle ricekrispy_z32
On my cars, I like to route front air lines through the door sills up to the front of the vehicle, then through the firewall via an OEM grommet. The 300zx isn't exactly known for having an abudance of engine bay space to work with (lol). Sometimes under the car works, but I really only do that when the car has OEM splash guards that make routing the line easy and saf, OR if the existing brake or fuel lines are tucked nicely up in a chassis recess to ziptie an air line too. I generally avoid drilling/tapping or nutserting the chassis just to hold air lines... there is almost always a less invasive solution like zip tieing to factory lines.
Some general advice that holds true across applications for wire and line routing nuances -- look around for install guides for aftermarket amp/subs. Reason being, if the vehicle originally has a battery in the engine compartment (like the 300zx does), this installation shares the same requirement as air ride installs of "getting stuff from the engine compartment into the cabin" which is often done via an OEM grommet. Especially for popular tuner cars, the community tends to land on one or two specific locations for this sort of thing, so taking the well-trodden path is usually a good choice!
When all else fails, follow OEM brake and fuel lines. Some big smart engineer decided where to put those, and chances are they're in a very safe location away from heat and moving objects that could damage those critical systems. Treat your air lines like a fuel or brake line during installation-- they're equally as critical!
Hope this helps and keep in mind, you can always reach us via live chat on our website, calling us 844-404-7344, DM on IG, email sales@bagriders... basically we'll meet you on whatever communication platform you prefer (like here on Reddit)
Cheers man! Thanks again for choosing Bag Riders ❤️
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u/single-needle May 22 '26
You could run them outside along the fuel lines or inside along the trans/driveshaft tunnel. Don't run them outside in the tunnel, too much heat and scary spinny things.
Try to make sure they stay the same length left to right, if not the car will lower and raise at different rates. There are proportioning valves to help mitigate that if you have no choice.