Al.
New member
I have a c400gt, latest version, it rides like a hard tail.. what rear suspension. So considering changing the rears. Any feedback from other who have done this, are the results worth the cost. Thanks
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YSS Rear Suspension Upgrade
- Thread starter byee
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byee
Active member
Definitely worth it!!
Pls read my comments from the beginning of the thread
Pls read my comments from the beginning of the thread
mzflorida
Well-known member
I don't own a C400GT yet, but probably will next week. I have used the YSS on a 21 Yamaha Xmax and they are definitely a fairly good option for an aftermarket shock. They are certainly better than most OEM shocks and will likely improve ride characteristics. Like @byee said, they soak up bumps and absolutely provide a more confident and comfortable riding experience. I know this is a YSS question so apologies for digressing. If I buy the C400GT next week, I will go with the Hyperpro shocks. I've had them on the last 5 motorcycles I've owned, and they are unquestionably an apex product (they did not have an option for the Xmax without a very expensive custom build). Hyperpro are shipped from the distributor configured for you with a spring that matches your body weight and riding style. I've used EPM Performance to purchase them each time and they are fantastic to work with. My opinion; suspension upgrades are the best money spent on a motorcycle.
Regarding the YSS brand, they are often counterfeited. I received one of the fakes (confirmed by YSS) which I purchased unwittingly from Ebay. For me, I would only buy YSS from a reputable distributor.
Regarding the YSS brand, they are often counterfeited. I received one of the fakes (confirmed by YSS) which I purchased unwittingly from Ebay. For me, I would only buy YSS from a reputable distributor.
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OldDog
Member
My rear preload is set to 5. Really comfy one up with a full top box. Bit clunky when the box is not on but I live with it as the adjuster is an sob to use. I weigh 14st, 7lbs fully rugged up.
mzflorida
Well-known member
I'm ordering the Hyperpro shocks this week.
marky
New member
Wood the yss void the factory warranty anyone no
mzflorida
Well-known member
I would believe the answer is that replacing the rear shock would not void the warranty on most other components of the bike. But I would not trust my opinion, or anyone else here on this forum to give you a defensible answer. A warranty is a legal contract, varies in limitations and enforceability by state, and can become complex to interpret. I would email BMW to get confirmation or go through the warranty docs to see if it is clear one way or the other.
HSG
Member
Reviving this thread....... Looking for these shocks today and the price is closer to 1K. Does it exist at a lower price point?
wspollack
Well-known member
I did a little digging, without all that much success. To recapitulate for newer members:
1) Yep, Bikerzbits, in Thailand, where @byee bought his (see post #6), and which I had bookmarked, seems to no longer sell them. For the C 400, it looks as if they sell only fork springs (https://bikerzbits.com/bmw/bmw-c400/ ). That's too bad, because as @byee noted, he paid only $510.
2) The cheapest on eBay right now seem to be this, at $696.91 + $65.38, from sc-racingshop in Italy:
YSS Pair Of Gas Shock Absorbers For BMW C 400 GT 2019-2022 | eBay
EBAY STORECONTACT USWHERE WE AREFEEDBACK YSS HIGHER QUALITY REPLACEMENT THAN THE ORIGINAL THE PHOTO IS PURELY INDICATIVE YSS is a company that has been producing shock absorbers for cars and motorcycles for over 30 years. YSS continues to use advanced technologies and sophisticated equipment to...
www.ebay.com
3) Tiniracing, also in Italy, has them for €563.74 (c. $596) (with €710.81 crossed out, so presumably on sale), plus shipping, I presume. Unfortunately, not only are they marked down, but listed as "Out of stock" (which reminds me of old joke about butcher shops):
PAIR OF YSS TOPLINE SHOCK ABSORBERS BMW C 400 X (YSS REF.: TU362-440TRCJ01)
Ready in 2-3 working days
That page says the product is for "2018 - 2024BMWC 400X" and I don't know whether there's any difference in the X vs. GT shocks for those years. I don't think so, but that's me.
5) EPM sells other makes of shocks, but they're expensive, too. In our case, the lesser of two HyperPro models for "2018 - 2024 BMW C 400 GT / X" starts at $964 + shipping:
That's all I got.
wspollack
Well-known member
Resurrecting this thread from a couple of years ago, I ordered the YSS shocks about a week ago and expect to have them here (upstate NY, USA) shortly. And now, some notes for others, and a question for @byee ...
WHAT CHANGED?:
I had some life-style changes recently. In order:
- A year and a half ago, I replaced the stock shocks on my other bike, my Meteor 350. The stockers were, um, shockingly bad -- after all, while that bike is definitely a smile-inducing ride, it is certainly built to a price-point. The replacement shocks ("2Win," from the Shock Factory in France) made a tremendous improvement in the ride quality of that regular type of bike.
- Almost a year ago, a serious medical issue arose with my wife. As we got pretty far up there in age, the frequency of two-up riding has diminished almost to never, but with that change it is definitely not going to happen anymore. I mention this because one of my concerns with aftermarket shocks for the C 400 was the ease (or not) of changing preload between solo and two-up riding (see post #14 here). This is no longer an issue for me.
- A few months ago, I developed sciatica, which made bumps in the road, um, literally a PITA. I'm undergoing physical therapy for this, which is helping a lot, but still ...
PURCHASE DETAILS:
I bought these from Omnia Racing in Italy: https://www.omniaracing.net/en/yss-...00x-2018-p-653148.html?currency=USD&e_cId=223
Here are the details from Oct. 5, from my email confirmation:
This is cheaper than Bikerz Bits in Thailand, where @byee purchased them 4+ years ago (see post #6). (I think they stopped selling them for some time, but I just checked again -- https://bikerzbits.com/bmw-c400x-yss-g-top-black-series-tu362-440trcj-01-888a.html -- and they seem to offer them now. The total with shipping to NY is about USD 755.)
(Regarding some of the other shops I mentioned in my post #29 above, from almost two years ago, Tini Racing in Italy currently lists them for about USD 855, plus shipping: https://www.tiniracing.it/coppia-ammortizzatori-yss-topline-bmw-c-400-x-rif-yss-tu362-440trcj01.html . And EPM in New Jersey currently lists them for USD 999, plus shipping: https://epmperformance.com/products/yss-tu362-twin-reservoir-shocks-bmw-c-400x-tu362-440trcj01-888a . )
There is no mention of any tariff fees in my purchase from Omnia Racing in Italy, and the shocks are now in the hands of FedEx (I have a tracking number), which also doesn't mention anything about that. So I believe that that USD 691 is my final price, but if some pay-on-delivery fee arises I will post an update.
QUESTION ON INSTALLATION:
@byee noted in his original post in this thread that "The shocks were super easy to install," and also helpfully included some photos.
Replacement looks straightforward, all right, and the torque values are shown in the shop manual:
Plus, as I mentioned, I actually did this sort of thing myself, on my Meteor 350: just put the bike on its centerstand, and did one side at a time -- remove old, install new -- and then moved on to the other side.
Nevertheless, I'd appreciate a comment from @byee or anyone else who's replaced shocks on a C 400, regarding whether there are any "gotchas" to be aware of, or any tips and tricks related to what looks like a simple swap.
That's all I got.
WHAT CHANGED?:
I had some life-style changes recently. In order:
- A year and a half ago, I replaced the stock shocks on my other bike, my Meteor 350. The stockers were, um, shockingly bad -- after all, while that bike is definitely a smile-inducing ride, it is certainly built to a price-point. The replacement shocks ("2Win," from the Shock Factory in France) made a tremendous improvement in the ride quality of that regular type of bike.
- Almost a year ago, a serious medical issue arose with my wife. As we got pretty far up there in age, the frequency of two-up riding has diminished almost to never, but with that change it is definitely not going to happen anymore. I mention this because one of my concerns with aftermarket shocks for the C 400 was the ease (or not) of changing preload between solo and two-up riding (see post #14 here). This is no longer an issue for me.
- A few months ago, I developed sciatica, which made bumps in the road, um, literally a PITA. I'm undergoing physical therapy for this, which is helping a lot, but still ...
PURCHASE DETAILS:
I bought these from Omnia Racing in Italy: https://www.omniaracing.net/en/yss-...00x-2018-p-653148.html?currency=USD&e_cId=223
Here are the details from Oct. 5, from my email confirmation:
This is cheaper than Bikerz Bits in Thailand, where @byee purchased them 4+ years ago (see post #6). (I think they stopped selling them for some time, but I just checked again -- https://bikerzbits.com/bmw-c400x-yss-g-top-black-series-tu362-440trcj-01-888a.html -- and they seem to offer them now. The total with shipping to NY is about USD 755.)
(Regarding some of the other shops I mentioned in my post #29 above, from almost two years ago, Tini Racing in Italy currently lists them for about USD 855, plus shipping: https://www.tiniracing.it/coppia-ammortizzatori-yss-topline-bmw-c-400-x-rif-yss-tu362-440trcj01.html . And EPM in New Jersey currently lists them for USD 999, plus shipping: https://epmperformance.com/products/yss-tu362-twin-reservoir-shocks-bmw-c-400x-tu362-440trcj01-888a . )
There is no mention of any tariff fees in my purchase from Omnia Racing in Italy, and the shocks are now in the hands of FedEx (I have a tracking number), which also doesn't mention anything about that. So I believe that that USD 691 is my final price, but if some pay-on-delivery fee arises I will post an update.
QUESTION ON INSTALLATION:
@byee noted in his original post in this thread that "The shocks were super easy to install," and also helpfully included some photos.
Replacement looks straightforward, all right, and the torque values are shown in the shop manual:
Plus, as I mentioned, I actually did this sort of thing myself, on my Meteor 350: just put the bike on its centerstand, and did one side at a time -- remove old, install new -- and then moved on to the other side.
Nevertheless, I'd appreciate a comment from @byee or anyone else who's replaced shocks on a C 400, regarding whether there are any "gotchas" to be aware of, or any tips and tricks related to what looks like a simple swap.
That's all I got.
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DickyKnee
New member
the only gotcha I had when I installed was because I also have a extra rear fender/mudguard installed. I had to rotate the LH out slightly otherwise it interferes with the mudguard.
wspollack
Well-known member
Hey, thanks for the follow-up.
As it turns out, I just finished putting them on about an hour ago (they arrived yesterday). I had hoped I wouldn't have to take out the washtub (i.e., underseat storage), but I wound up doing that. The shop manual says you can just have the flexcase in the down position, but I call that bullshit. You'd have to have an extremely short T50 right-angle gizmo, but even if such a tool exists, how on earth would you tighten it afterwards to a given torque spec?
All in all, it wasn't too bad, and things lined up nicely.
I also have an added rear fender: see my posts 1 and 3 in https://www.bmw-scooters.com/thread...diy-instructions-was-help-wanted-solved.3304/ . The clearance on both sides now seems about like before, maybe half an inch or so.
You got me curious, so I just went out and measured the OD of the springs on the stockers and the YSS. Both seem nearly identical, something in the neighborhood of 2.51" - 2.52". (It's tough to get an accurate measurement with my calipers, dealing with spirals. Perhaps some blocks of wood on each side, with a method to ensure they were parallel to each other, would yield an accurate result.) So I'm not sure why you had to alter anything (and I'm not sure I understand what you meant by "rotate," either).
Anyhow, all I need now is a few warm and dry days, to check them out and maybe play with some settings. I left the preload and compression as is, and I set the rebound all the way to its softest setting. Last year, I installed aftermarket shocks -- "2Win," from the Shock Factory in France -- on my Meteor 350, and after a few rides settled definitively on minimum rebound (leaving their preload as set by the factory for my weight, and they don't have adjustable compression). So that's my experience with fancy shocks. What kind of adjustments did you wind up making?
- Thread starter
- #33
byee
Active member
Hey Bill,
Very straight forward install with no hiccups or mods required. I just replaced them one at a time.
The only thing I did was to measure the center to center length on the old shocks so I can adjust the YSS to the same length.
Good luck!
wspollack
Well-known member
Thanks much for your comments, and for your concern, attempt at helping me, etc.
As I mentioned a couple of posts ago, I couldn't wait, once the shocks arrived, and luckily managed to get through the installation without a lot of cuss words.
Here are my tips for anyone adding YSS TU362440TRCJ87149190 shocks to a C 400 (GT/X), at least before the '25 model (as BMW changed a bunch of stuff on that model, I don't know whether they use the same stock shocks as the earlier model years):
1) You need to get the underseat storage compartment out of the way.
The shop manual alleges that just having the flexcase in the lowered position is sufficient. Lowering does indeed give you a few mm of inside space around the top shock bolt, but it is nowhere near enough. You have to get a Torx bit or drive on there, and there's not enough room for one. And even if you had a stubby right-angle Torx, I don't know how you'd apply a torque wrench to it later on; I know there are ways to torque a "crowfoot" wrench, but this whole thing boggles my mind.
As I've show in an earlier pic, you don't have to actually remove it completely, or even disconnect the couple of connectors to it -- you just need room to work, e.g.:
And, of course, as I've WARNED a few times on the forum over the years, make sure you don't bump the tiny switch on the rear of the underseat washtub when messing with it, lest you break it. As I noted in this image and caption in my gallery -- https://billanddot.com/C400GT/#S-35 -- I did just that on my (former) '22 C 400 GT, as I was oblivious to its presence and fragility.
2) You'll need a T50 Torx bit. You won't find that info in the shop manual, and you can't test-fit a bunch of bits before you start the job (because, as I noted, there's precious little room in there, with the washtub in place, flexcase up or down).
You don't, however, need a super-long T50, the kind I just pictured. A short-shafted T50 will do nicely, but despite having a good collection of Torx-in-sockets the only T50 I had was in a long-shaft set.
3) You'll need an 16mm open-end wrench for the nut on the other end (the outside) of the top-shock bolt. You can't fit a box-end wrench or a ratcheting wrench around it (at least I couldn't).
Also, when you go to put the bolt back in, after putting the new shock on, don't push the bolt all the way through. If you do that, you won't have enough room to put the nut back on. Instead, push the bolt only far enough through such that you have a thread or two past the bracket, so you can slip the nut back in place and get it started.
(Regarding the stock bottom bolt, it takes a T50 as well, but the nut on the inside is captive, i.e., it's welded on, no need for a wrench. Unlike the top, the bottom bolt is not re-used.)
The bolt included with the YSS for the bottom doesn't take a nut, as the inside of the bracket is tapped for the bolt supplied with the new shock. It takes a 14mm socket to tighten.
4) The rebound adjusting portion of the YSS booklet is, um, upside down:
That is, that may be the case for most applications of YSS shocks, but in our case that ring is up top, not at the "base." So if, like me, you want to start out with it set softer or harder than its default setting, turn the shock upside down, and have at it. Easier than messing with it when the shock's in place, and that ring is way up top, nearly out of sight.
As I mentioned in my earlier post, I set the rebound at max softness.
5) Regarding length, unlike you, I didn't give it much thought. I assumed that it was set to stock length, and luckily for me that seems to be the case:
That is, there's a locknut presumably in a locked tightness, so I guess it's okay to leave it alone. That's the impression I get from studying the instructions above. I did take a pic right after I removed the first shock, and eye-balled them, and they look pretty much the same in length (although I probably should've measured them, like you did):
6) The booklet says something about putting grease on the bushings before you push them into the eyelets on the shock. Well, there's only one bushing, and it was already in place, so I think that instruction is a cut-and-paste or something, not relevant here.
7) Of course, do one side at a time. And with the bike on the centerstand. Torque for top and bottom bolts is the same, 38 Nm / 28 Lb.Ft., per the BMW shop manual (no mention of this in the YSS booklet, so I would opine that they reasonably enough leave this up to the manufacturer and the given model of bike).
I started with the right side, removed the old and put in the new, and then moved on to the left, but I suppose which side you replace first doesn't matter.
8) The penultimate page of YSS's on-line registration web page -- the one where I enter my name and address -- just hangs there for me, after I enter that info. I emailed YSS, gave them the two serial numbers, a jpg of my receipt, yada yada, and they suggested that I clear the cache on my browsers (I tried this on both Safari and Firefox). No luck, so I'll try this on an iPad or phone, and may have to email them again.
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I think that's all I have, regarding tips and tricks. I might have more to add once I actually ride the scoot. So far, life and the weather have precluded that.
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