Features:

  • genuine oem factory part
  • exact fit
  • durable
  • best in quality
  • this is not an aftermarket part
  • OEM
I like it on my 2017 WRX!

This mount is maybe 1/8 or 1/4 inch taller, but much more sturdy and more solidly constructed than the stock transmission mount. The shifts do feel more solid, but something I was not expecting was the sound difference. I assume it's because the new mount is so solid and sturdy that it causes the vibration sound to be a bit deeper. It's nothing bothersome and I may be imagining it. I didn't think to concentrate on how things sounded, before the swap, but I'm pretty sure it's a little different. I watched the YouTube video series by LastHumansGarage as a tutorial. My torque numbers used are as follows: 17mm - 80ft/lb, 14mm - 50 ft/lb, 12mm - 26 ft/lb, as I didn't want to strip out or break any.

Good Bye Rubbery Drive Train

Probably the single best upgrade to get rid of the drive train bounce. The 2015 WRX is a good car in stock form. One of the area for improvement is the feeling that the engine is secured with rubber. Anyone who has driven a manual knows that there are times when you can get the car's drive train really bouncing. Whether at low speed in 1st or while trying to rev match. Some call that flex, slack, slosh or bounce in the drive train. I've done the pitch stop upgrade prior to this with only a small improvement. This time around I got the Group N Transmission mount to go with the previously upgraded Group N pitch stop. They are both Subaru parts, but they are worlds different. The stock mount with the rubber construction, I can flex with my bare hands 20 - 30 degrees. The Group N mount is flex free. The material on the Group N mount is probably not the same polymer that some suspension bushings are made of. Rather I'd liken it to some really firm rubber and there is double the amount over stock. Installation is easy with ramps or stands and a 1/2" socket set. Best to have a torque wrench, but I've bee accused of being a little too serious about doing the job "just so". Won't take most experienced wrench turners more than an hour. At the same time I also installed a set of Whiteline transmission brace bushings (Whiteline KDT901 Gear Box Shift Kit Bushing). The results are noticeable on a couple of points. First, the bounce is gone. Huge reduction in 1st gear gyrations in creeping traffic. Also as you move through the RPMs the wiggling as boost comes up and the engine adjust whatever else is almost undetectable. The second point is that the engine noise is up a few notches at low speed and acceleration. At highway speeds, it is much less noticeable. Now it is hard to tell how much of the noise is attributed to the transmission mount or the transmission bracing bushings. Maybe next spring I'll remove the Whiteline bushings just to see if the noise decreases w/o any driving feel regressing. My recommendations are as follows. Transmission mount first. Pitch stop dog bone second. Then if you are going up to a Stage 1 or 2 tune, look at the engine mounts and the transmission bracing bushings. Group N parts are a good 2/3 improvement over some of the other more serious parts from Kartboy, Perrin and others if you are not willing to have large increase in NVH.

Group N 5MT bushing

This is in fact the group N bushing. The group N part number for the 5MT bushing is ST4100055200; D1010FE020 is shown on parts.subaru.com as the alternate/replacement number. Fits pretty much all Subaru 5MT transmissions. The other trans mount bushings you'll need are ST410224S030, which are the group n cross-member bushings. On another car I installed the kartboy version of the cross member bushings, and the OEM group N ones are far nicer. They aren't quite as stiff as the kartboy ones, but they have a raised lip just like the stock Subaru ones. As for an actual review of this trans mount - it's an OEM part, stiffer than stock, and improves the stiffness/feel of the shifting. I have this mount installed in both an 02 Impreza and an 02 Outback. I also have a cobb short shifter installed in both cars. NVH is for sure increased, albeit I changed the engine/trans mounts at once so can't comment on the effects of this mount alone.

Worth the money and time!

Such a difference. The stock mount on the 2015 WRX feels like a wet sponge compared to this upgraded mount. Car shifts smoother, less bounce in first and second gear at low speeds, and overall better, stiffer feel. The stock mount is soft and feels almost useless compared to this one. My neighbors seven year old can easily move the stock one around with little effort, while I myself can barely move this one with much effort. Install wasn't too bad. You'll need 14mm and a 17mm socket, and a jack to hold the transmission. Just get your jack in place supporting the transmission, a wood block helps with surface area but isn't needed. Unbolt the old mount from the brace ( not the transmission ), unbolt and drop the brace, unbolt the old mount from the transmission, bolt up the new mount to the transmission, replace and bolt up the brace, bolt up the mount to the brace. Tighten all bolts, lower the jack, and you're done.

Greatly Improves Shift Feeling, DOUBLE CHECK TORQUE!

This is my second purchase of this product, the first time not being from Amazon. It's great, install it immediately. That being said, DOUBLE CHECK YOUR TORQUE SPECS! The Subaru manual has a mis-print in that it specifies multiple bolts as needing 52 ft/lbs of torque, when they actually need only 26. You will strip out the cross member bolts if you follow the picture printed in the service manual. The only bolts that need 52 are the four 14mm bolts connecting the cross member to the chassis. The other 14mm bolts/nuts are all 26 ft/lbs. The 17mm bolts are 102 ft/lbs. Don't make my mistake, as most Subaru dealerships don't actually stock the replacement bolts (which makes no sense to me).

Knocking sound when shifting? Replace your trans mount!

I bought this for my 150k mi, 5-MT, 2004 Subaru WRX. When I would shift from 2nd to 3rd, I would hear a clunk in the floorboard pretty much where the transmission is located and immediately knew that the transmission mount was bad. When I took out the old transmission mount, it definitely had some play in it from the old worn out rubber. So much so, that I was able to flex the mount by hand. This new mount is SOLID as it's fully steel. I no longer hear that knocking sound in the floorboard. As an added bonus, I'm now able to shift into reverse the first time, every time! I didn't even think this was caused from the old mount but apparently it was. I thought it was due to potentially old transmission fluid (which I'm going to change next week. I just bought the car 2 months ago). Installation was a breeze as well. Just do a quick search on YouTube to see which bolts are needing to be taken out to get to the transmission mount. Just make sure to support (not jack up) the transmission so it's not drooping down solely from the bolts holding it to the engine. Also, buy/download a service manual for the year of your car so you know how much torque to tighten the bolts back down along with adding Locktite to each one.

Fits 2005 Outback XT 5 Speed Manual. Much better than stock Trans mount.

Installed on a 2005 Subaru Outback XT 5 Speed Manual Transmission. Item is as described. Item fit without modification. OEM Subaru Group N transmission mount which is much firmer rubber than the original component. It was purchased to replace the weak “slotted” or “gapped” original mount. It fit perfectly. However, it added a very small amount of audible vibration and some felt vibration in the clutch pedal and shifter knob. The Group N *motor* mounts added at least four times the vibration that the transmission mount did. Overall shifting performance was similar for daily driving, but felt firmer and more direct. It is kind of hard to explain. The transfer of energy from motor drive shaft to flywheel to clutch felt more responsive to the clutch pedal actuation. Less “squishiness” in clutch use from one gear to the next. Overall I’m very satisfied and happy I went with this mount over other offerings. Was it worth $40 more than the Anchor brand mount for $35 on Rockauto? Probably not for my vehicle with 210k miles and a curb value of $3500. But I’m still happy with my purchase and feel that this is a good value for an improved component that is also OEM Subaru.

'15 Forester: no more clunk + more direct power

Replaced my (very flexible / soft) stock transmission mount after 77k miles and a lot of engine movement (pitching) under load. This seems to have addressed an intermittent clunking issue I was experiencing from the old transmission mount bottoming out, and has also very slightly improved the directness of power delivery. Before, when letting off the clutch, there would be a more elastic sensation of the whole drivetrain loading up (and flexing) before the car would begin to move. Now, the car moves forward a fraction of a second sooner than I used to expect. As far as NVH, I now feel the car vibrating slightly (it's more like a 'purring') at idle, but no other impact. I'm still on my stock engine mounts.

Best upgrade you can do to improve the driving experience!

This is probably one of the best upgrade you can do for your car. I installed it on my 19 WRX and the difference it makes was very noticable the moment you start driving. It completely took away all of the transmission movement that causes backlash, but this can only explain so much. The 3 months that I had my WRX, I thought the slight jerking was how Subaru made their transmissions or I wasn't used to the clutch of the car yet. It was worse in first and second gear. I was completely wrong. I knew I wasn't that bad at driving manual. This transmission mount made shifting extremely smooth. Rev matching is even smoother also. I have no idea why Subaru decided to use the flimsy mount installed from the factory, when they should've used this one from the beginning. Also increased NVH is almost non-existent. You'll only hear a slight whine from the rear differential, but you probably wouldn't notice unless you're hearing out for it.

Good Replacement Mount 2015 WRX STI

Transmission produced a rapid knocking sound on low speed acceleration. Replaced factory STI mount with this much stiffer Group N mount and knocking ceased. Interior noise is not noticeably louder, but you may hear a bit more trans whine. The knocking was very obnoxious so I'm happy that is solved. I paired this with the Energy Suspension 19.1103G Black trans crossmember bushing set for good measure and am happy with the results.

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