Have same part on my jdm sti 15, looks like it not allows frame to move more - the frame anyway fixed by the bolts and flex is limited by them and bushings. My opinion is that prevent parasite effect from the one wheel to another. If you hit bump with the left wheel - this bushings absorb this movements and do not transit them to opposite wheel. That should help to improve overall grip in not ideal conditions
Nice! I agree with your thoughts on the parasite effect but I do think making the brace more flexible by deleting a fixture point and adding the bushing allows the bolts to bend more freely at the heads. I actually may have negated some effectiveness by using STi extended subframe bolts instead of OEM. I'm going to look more in the future when car back on jack stands. Thanks for your opinion!
@@j168vlogs as i know S207/8/9 equipped with extended subframe bolts AND flexible brace. If STI bolts could produce any negative effect on overall grip within this setup - i'm pretty sure that Subaru won't complect all limited editions with this two parts at the same time. One more point against providing extra movement of subframe - S207/8/9 also equipped with spacers betbeen subframe and lower washer of subrame bolt (P/N ST20176AS010) which is also extra lock subframe and decrease its movement. It is completely unlogical to add parts for additional movement of subframe and parts for additional subframe lock together :)
@@thefuriyademo Ah ic, I didn't know the S207 and 208 had the special subframe brace too. Good to know! That is awesome. The S209 here in the states for some reason only uses the lower stopper and STi bolts in the front but regular bolts in the back with a modified subframe brace (no bushings). It's very interesting that you used the word illogical because that is exactly how I felt about the entire STi chassis product line. I still question how the flexible brace works but I trust that it does. If you read the english description of the part, STi describes the part as stiff and supple which are opposites. So yes, it is rigid and locked down but flexible at the same time lolol. We are both right.
@@MisterS4League Hey! Just make sure the STi flexible strut tower brace is installed first. Most STi components were designed to work off each other. There is more info at STi.jp about that. I drive a WRX so the STi offerings are different but I think improved wheel contact was the biggest difference I noticed. Safe drives!
Love the insight! I wonder if this is to allow "more rotation" in the rear to induce a tad more oversteer since people love to complain how the car understeers at its limit.
Hey what's up! Thank for watching! Lol, I guess understeer can be a complaint if you're trying to drift the car. STi assumes you already installed the front strut tower bar before this rear brace which probably confirms your thought about a slight increase in oversteer.
@@j168vlogs I agree. After watching the video with Chris Atkinson showing how the car is SUPPOSED to be driven, it made the understeer complaints moot. lol😂
Hey so I have a 2017 Forester XT and already have the STI front tower brace installed. Did you feel or recognize any difference when you installed this subframe brace?
Hey what's up! I installed the subframe brace with a whole bunch of other stuff so I was unable to exactly pinpoint the benefits of the subframe brace. Based on the design, I think the rear subframe brace should allow for a more direct steering feel on smooth surfaces and increased tire contact on uneven road surfaces (less fishtailing).
Thanks for responding so quickly That's amazing lol. Do you think this part makes the car go over bumps and potholes harsher or would it force the car to use the struts independently so that it would be a reduced effect?
@@tlipsey77 I think it will actually make the car slightly more comfortable with the added bushings lol. You are probably right to say the struts are working more independently with this upgrade haha. The design is so confusing!! ???
Yeah I was reading the description and it was odd haha. I'm trying to slowly convert my XT over to the JDM TS that came out in Japan and whatnot. Thank you for your input I appreciate it and if I decide to get this I will let you know how it feels lol
Have same part on my jdm sti 15, looks like it not allows frame to move more - the frame anyway fixed by the bolts and flex is limited by them and bushings. My opinion is that prevent parasite effect from the one wheel to another. If you hit bump with the left wheel - this bushings absorb this movements and do not transit them to opposite wheel. That should help to improve overall grip in not ideal conditions
Nice! I agree with your thoughts on the parasite effect but I do think making the brace more flexible by deleting a fixture point and adding the bushing allows the bolts to bend more freely at the heads. I actually may have negated some effectiveness by using STi extended subframe bolts instead of OEM. I'm going to look more in the future when car back on jack stands. Thanks for your opinion!
@@j168vlogs as i know S207/8/9 equipped with extended subframe bolts AND flexible brace. If STI bolts could produce any negative effect on overall grip within this setup - i'm pretty sure that Subaru won't complect all limited editions with this two parts at the same time. One more point against providing extra movement of subframe - S207/8/9 also equipped with spacers betbeen subframe and lower washer of subrame bolt (P/N ST20176AS010) which is also extra lock subframe and decrease its movement. It is completely unlogical to add parts for additional movement of subframe and parts for additional subframe lock together :)
@@thefuriyademo Ah ic, I didn't know the S207 and 208 had the special subframe brace too. Good to know! That is awesome. The S209 here in the states for some reason only uses the lower stopper and STi bolts in the front but regular bolts in the back with a modified subframe brace (no bushings). It's very interesting that you used the word illogical because that is exactly how I felt about the entire STi chassis product line. I still question how the flexible brace works but I trust that it does. If you read the english description of the part, STi describes the part as stiff and supple which are opposites. So yes, it is rigid and locked down but flexible at the same time lolol. We are both right.
I ordered this three parts ST20157VV000 / ST20106ZR000 / ST20118VV010. Do you think this will inproof the driving performance?
@@MisterS4League Hey! Just make sure the STi flexible strut tower brace is installed first. Most STi components were designed to work off each other. There is more info at STi.jp about that. I drive a WRX so the STi offerings are different but I think improved wheel contact was the biggest difference I noticed. Safe drives!
Keep posting bideos!!! Love seeing the sti parts install
Love the insight! I wonder if this is to allow "more rotation" in the rear to induce a tad more oversteer since people love to complain how the car understeers at its limit.
Hey what's up! Thank for watching! Lol, I guess understeer can be a complaint if you're trying to drift the car. STi assumes you already installed the front strut tower bar before this rear brace which probably confirms your thought about a slight increase in oversteer.
@@j168vlogs I agree. After watching the video with Chris Atkinson showing how the car is SUPPOSED to be driven, it made the understeer complaints moot. lol😂
@@j168vlogs Got a new sub by the way. Not too many quick honest reviews on parts like these.
@@KiddFly Appreciate it! More videos in the works!
Hey so I have a 2017 Forester XT and already have the STI front tower brace installed. Did you feel or recognize any difference when you installed this subframe brace?
Hey what's up! I installed the subframe brace with a whole bunch of other stuff so I was unable to exactly pinpoint the benefits of the subframe brace. Based on the design, I think the rear subframe brace should allow for a more direct steering feel on smooth surfaces and increased tire contact on uneven road surfaces (less fishtailing).
Thanks for responding so quickly That's amazing lol. Do you think this part makes the car go over bumps and potholes harsher or would it force the car to use the struts independently so that it would be a reduced effect?
@@tlipsey77 I think it will actually make the car slightly more comfortable with the added bushings lol. You are probably right to say the struts are working more independently with this upgrade haha. The design is so confusing!! ???
Yeah I was reading the description and it was odd haha. I'm trying to slowly convert my XT over to the JDM TS that came out in Japan and whatnot. Thank you for your input I appreciate it and if I decide to get this I will let you know how it feels lol
@@tlipsey77 Awesome!! Any input is appreciated!! Good luck with the TS conversion, should be a great looking and performing vehicle!!