Upgrading UCA's on PRO worth it?

Would there be any benefit on upgrading the UCA's or other suspension bits (ex: leafs) OTHER then whats included with the TRD PRO suspension package? I like my the stock suspension on the PRO It works well enough for me so I don't really want to change the suspension out but I don't mind adding tweaks if it well improve performance/capability on whats there, And maybe down the line if I get bored I'll do a full suspension upgrade. Also if I did feel the urge for more lift that would require all new shocks etc correct?

 

i just bought a set of UCA's in the last group buy, and i'm installing them and realigning next Thursday on my Pro, which is mostly stock (added Hellwig rear sway bar & sumosprings as well as wheels/tires) with a stock tire size. why? because i can dial in more caster. and that, for me, is worth paying the price. normally limited to around +3deg caster give or take. i'm hoping to get at least +4 if not more out of them.

 

What is wrong with Caster on a stock TRD PRO? I must know.

 

4 to 5 deg caster is great for large tires and makes it far more stable on road, but will also add more ware and tare to steering components. If you have a "twitchy" lifted vehicle that's prone to steering shake it's the fix you should try before a steering stabilizer. It's why I don't get people trying to get less caster, just to fit bigger tires on a tacoma.

 

there's nothing at all wrong with it. it's fit for purpose. but i'm primarily a highway driver, and i have my truck kinda setup for that. so adding more caster works right into my direction. the idea is the less caster you have, the more the front end weight sits right on top of the wheels, so it makes things very responsive and easy to drive around town. adding caster moves the front end's weight a bit back toward the driver, so it makes for a more stable steering and front end feel. but it's not as quick to respond due to being a tick slower in weight shifting with higher caster. as always though, these things are interdependent and it's not as black/white as described. many open wheel race cars with extremely quick front ends have high caster settings, for example. it's more simple for our trucks though.

 

thanks, i'm gonna make a note of that.

 

I Just didn't see a mention of tires or other suspension mods (lift)

 

Didn't you buy a pro because it's the ultimate truck ever? If you wanted to upgrade your truck with aftermarket stuff that's better than fox, buy a TRDOR.

 

There is absolutely nothing wrong with 3* caster. Anything more is a waste and won't change anything.

There is absolutely ZERO benefit to running aftermarket UCAS on a stock rig other than the "look at my control arms bro" benefit.

They give you more caster but only needed if lifted. They are lower profile so easier to clear 33"+ tire sizes. They will not max out at full droop when running extended lift coils so the ball joints last longer. Again only benefits of lifted.

 

Get UCAs when you lift, otherwise leave them stock. </thread>

 

are you saying you cannot tell the difference in how it drives when the caster is raised beyond 3 degrees? if so, that's fine but speak for yourself. I'm installing my uca's for the added caster degree or two because it will make a big difference to every moment the wheel is in my hands. true, but I'm also a driving and car setup freak.

 

I've tested 1.5, 3, 4, and 5.5* I my SPCs. I found pretty much zero change above 3*. If anything all it did was make steering a lot stiffer when turning.

Also running such high caster can push the tire into the firewall causing tie clearance issues when fully stuffing the front tires.

Aftermarket UCAS give your more caster at the cost of firewall clearance.