Quote:
Originally Posted by raab02
Yeah, that's wild... I'm guessing you found the 2.5RRs to be good on the runner?
I can definitively say now after a few days with the TRD Pro Foxes that my old Fox 2.0s were significantly stiffer.
The TRD Pro Foxes are such a night and day difference over the 2.0s that I regret not doing this first. Of course there's no free lunch - the extra soak-up-the-bad-pavement magic in the rear comes at the expense of rebound damping... this means it does take a split second to settle over bigger bumps, but I so do not care. It's beyond worth it to trade for a ride that doesn't jitter and feel so busy over every single imperfection.
As far as roll and dive, I don't think I notice a major difference. There must be some additional given how much more compliant they are, but it's definitely not anywhere near a problem. I did some quick-ish lane change simulations at like 45mph today and was pleasantly surprised.
My only other note is that the fronts are a bit stiffer than the rear, but still noticeably softer than the 2.0s. This has me wondering how a nice set of 2.5RR Foxes would be up front.... But I need to stop chasing perfection.
Lastly, I do no miss the extra 1-1.5" of front ride height that the Fox 2.0s had out of the box. At times the truck looked carolina-squatty (negative rake) and I hated it. I'm often carrying 150lbs of music equipment in the rear so the out of the box height on the TRD Pro Foxes is perfect for level-ish.
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My take is that the TRD Pro fox are the best option there is for most people. Myself included. I could not find a set resonably priced for my Tundra or that's what I'd be using. They're still $5k for the set for a Tundra. For a stock truck running 32" michelin street tires that I use for towing my toys around - hard to justify $$ for suspension. I'm currently living in Alaska and the trails are not very good for full size vehicles. I almost always use my side by side. Even it is often too big/heavy for getting around on soft muskeg stuff we have (think driving on peat moss bogs). My tundra would become a submarine. However, if I could find a used set for $1500 like I see from time to time for the 4Runner, that's what I'd go with. There's no way to get a 2.5RR to ride as nicely as the bypass shock design does. At least not for the typical driving most people would do with a standard configuration 4Runner.
I think you'd be downgrading from the TRD Pro fox to a 2.5RR unless you're planning to regularly use it something close to actual desert racing or you need a lift that is higher than you can do on the Pro fox setup or something like that. The TRD Pro fox setup is pretty close to what I'd design if I had a clean sheet and the resources of Toyota. The 2.5RR is an off-the-shelf component set assembled for a 4Runner vs a bespoke design just for that vehicle.
I thought the 2.5s were good. Excellent on fast desert roads. Good but a bit harsh on the highway. If I were re-tuning them I would soften the compression damping about 20%, maybe more. The tundra 2.0 feel much softer. Oddly - I would say the front on the Tundra is significantly softer than the rear in the Tundra 2.0s. The rear 2.0 tundra shocks give you a LOT of damping all at once when you hit big bumps fast. I don't like it very much in that situation. Enough that on things like speed bumps I wince a little when the rear end hits. It feels like I'm bottoming out on the bumps. But I don't have rubber bumps - I have air bags. I'm pretty sure I'm not bottoming out. But it feels like that harsh impact at times. Slower speed - feels super soft.
The only shocks I'd look at as an upgrade from the TRD Pro would be maybe the BP51s, or 8100 bilstein setup.
