Pretty disappointed in how rusted my Toytec Ultimate Suspension is

[Jetboy]

I guess some of them still use a steel body for the shock (but with a lot of heat and other treating)... But for the res and other components.. I can't imagine anything but aluminum. A steel remote res is just being cheap. The heat dissipation alone would

My understanding of the reason for steel on the reservoir is thermal expansion and friction. If you use the same clearance you'd use with a steel reservoir on an aluminum one, once they get hot the seals on the floating piston in the reservoir get fluid leaking by into the gas chamber because the aluminum expands more. When King started using aluminum reservoirs this was an issue. The alternative solution of a tighter initial fit means higher friction before the shocks heat up. For daily drivers that doesn't work very well.

But daily drivers also basically never will even approach the operating temps that race shocks are designed to operate at. Normally they should be running between 250 and 300 degrees. I doubt any of us ever get even close to approaching that kind of temps. So aluminum is just fine for us. And it's probably just fine for race trucks because they get hot fast so the extra friction when cold doesn't matter much. I think it's hard to strike a balance for someone who wants to actually use as a daily driver then also run 300 degree shock temps. My guess is that they just choose one or the other and ignore the combo because no-one actually does that. At least on the reservoir because the primary or a reservoir is to provide more gas volume to help mitigate internal pressure build up when the shaft moves and changes the total volume.

 

[MSRP.]

Something I did not see being mentioned.
Where do you park your 4R?
Inside? In a cozy underground parking garage that is heated?

Well, if they salt/brine the roads like they do up here, parking in an indoor spot where the ambient temperatures are well above freezing is simply going to accelerate all rust forming. The salty wetness is really only "actively" causing rust when temperatures are consistently above freezing.

That said, I learned something from this thread, thank you for starting it. I can't imagine adjusting that preload collar without a week of constant dousing in lube.

 

[NoWayOut]

I alway stayed away from the Toytec brand stuff. Never understood buying their suspension when its just rebranded stuff anyway. Had Icon Coilovers on my 4runner up here in the North East and after 3-4 years they looked a whole lot better than the OP's 9 month old Toytec stuff.
This time I went with Bilstein just because of their reputation and customer service. Plus their prices are way better than all the popular shit out there. My $600 Bilstein 6112's ride just as good if not better than my $1200 Icon Coilovers.

Op you definitely hurt them in their pocket with this one. Maybe someone they will start earning that $1800 for what they are selling people.

 

[RedRunner_87]

These are my 2 year old BOSS CO’s on my 3rd gen. 2 Colorado winters and I haven’t been the best at cleaning them.

 

[87pony]

Good luck ever being able to adjust the ride height on those. It’s damn difficult on my icons and they are only three months old and have no rust