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Reading through both threads, just finished the 18 page figs thread and working on the USRS 28 page thread, but bottom line is there any difference? I know the USRS appears to have preload bolts and the figs apparently does not, but beyond that is it just pretty much pick a color at this point?
Don't get too carried away with this. The idea is to keep your front wheels from wiggling around as you drive down the road. The basic poly bushings from both companies do just that. If the front wheels wiggle they can act somewhat like a brake. Keep them straight.
I did notice one thing. With the wheels straight, the toe in seems to change. If you turn off the stability control and pound the throttle while going around a corner, you'll lose the car. Leave the stability control on.
Saw a really nice Dodge Viper off the road and in the bushes the other day. Most of those don't have stability control.
Be more specific. Are you comparing the poly ones or the solid ones? Both also have different durometer bushing options.
Looking at the 90 durometer figs and the race version of the rr-racing. Not committed enough to go with the solid ones from either company.
Originally Posted by lorenr
Don't get too carried away with this. The idea is to keep your front wheels from wiggling around as you drive down the road. The basic poly bushings from both companies do just that. If the front wheels wiggle they can act somewhat like a brake. Keep them straight.
I did notice one thing. With the wheels straight, the toe in seems to change. If you turn off the stability control and pound the throttle while going around a corner, you'll lose the car. Leave the stability control on.
Saw a really nice Dodge Viper off the road and in the bushes the other day. Most of those don't have stability control.
There doesn't appear to be a ton of differences, interestingly enough it looks like FIG came out first, then rr-racing. RR-racing appears to have the preload bolts, but FIGS never updated their design or saw a need to put the preload bolts in.
Hi all, seeing the comments I’d like to clarify. There is a much greater difference at play here than just color or hardness (although for the record, we offer a softer street version and harder road & track version)
There is a HUGE difference in function of the Superpro versus our USRS.
The reason we use preload bolts is that we are preloading the large washer against the bushing, which virtually eliminates axial movement of the lower control arm. Without this, the lower control arm is free to migrate backwards (just like OEM bushing) under hard braking which causes the front wheels to toe out:
Fair enough, but you're preloading against another rubber bushing in the front. Kind of seems like 6 of one, half a dozen of the other to me unless you do something about the front bushing too. I've run Superpro poly, and now Figs solid both with Superpro poly in the front. The difference from OEM to Superpro was pretty amazing, and if you are OK running zero to 1/16" out for front toe, your tires will be fine. This is in deep contrast to the OEM bushings needing at least 1/8" toe in to wear the front tires evenly. Going poly/poly or solid/poly also means assembling your front suspension just got 100 times easier because there's no need to preload the corner before tightening the pivot bolts. HUGE YEAH BABY for that one!
As long as there is something squishy, there's going to be movement. Superpro and USRS will both deflect under hard use, but not even slightly like the OEM Krispy Kremes. If you're serious about deflection, you'll need to go solid. If you want better wear on your front tires, run either USRS or Figs Superpro and you'll be leagues ahead of the OEM piece. With a decent alignment, you'll track straighter under hard braking, and your inside edge wear problem will go away. AMHIK.
Years of reading and following the FB/CL ISx50/F threads and local owners, I went with Figs 90 twice(on an 08 and now 12) due to high miles commutes. Many with USRS are very happy, some had NVH and squeaks in the cold. Both are great, but USRS seems to need more lube more often and more NVH. More people tend to switch from USRS to Figs, never really see it go the opposite way. If you want more aggressive feel, both offer more solid solutions.
I have USRS. I did not think it affected ride or NVH, but I put them on at the same time that i removed swift springs and went to stock springs. In hindsight, I realize now that the relatively loud and harsh thuds on bumps may be related to the bushing. All that said, the Figs unit may do the same; i’ve never ridden with one. It’s bad enough that most of my friends have commented on how hard my car takes bumps. I can’t quantify if it is mod related, as I’ve never ridden in a stock ISF.
Last edited by Jwconeil; Jul 27, 2021 at 10:04 AM.
I have the first USRS prototype since 2015 and just recently replaced in 2021 with their solid offering. Never lubed, never squeaked, no noticeable NVH.
Fair enough, but you're preloading against another rubber bushing in the front. Kind of seems like 6 of one, half a dozen of the other to me unless you do something about the front bushing too. I've run Superpro poly, and now Figs solid both with Superpro poly in the front. The difference from OEM to Superpro was pretty amazing, and if you are OK running zero to 1/16" out for front toe, your tires will be fine. This is in deep contrast to the OEM bushings needing at least 1/8" toe in to wear the front tires evenly. Going poly/poly or solid/poly also means assembling your front suspension just got 100 times easier because there's no need to preload the corner before tightening the pivot bolts. HUGE YEAH BABY for that one!
As long as there is something squishy, there's going to be movement. Superpro and USRS will both deflect under hard use, but not even slightly like the OEM Krispy Kremes. If you're serious about deflection, you'll need to go solid. If you want better wear on your front tires, run either USRS or Figs Superpro and you'll be leagues ahead of the OEM piece. With a decent alignment, you'll track straighter under hard braking, and your inside edge wear problem will go away. AMHIK.
That's surprising! That front bushing is so small so I didn't imagine there would be much capacity for squish.
The biggest difference with the solid bushings is sharp edges on bumps. The high frequencies get transmitted through the chassis unabated and it is definitely noticeable.
The only NVH difference I noticed with the USRS was slightly harsher/louder experience going over expansion joints, pot holes, and the like. I don't notice any NVH difference the rest of the time. Definitely worth it for the benefits to me. I don't have experience with Figs.
I've had the Figs bushings at the 90 rating for over a year with street and track time. Had no issues with NVH or tire wear since I put them on. Great mod!