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YSS Rear Suspension Upgrade

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
 
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.
 
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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.
 
Wood the yss void the factory warranty anyone no
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.
 
Reviving this thread....... Looking for these shocks today and the price is closer to 1K. Does it exist at a lower price point?
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:

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):

4) EPM Performance in New Jersey (I'm on their mailing list), which I believe is the designated USA importer for some manufacturers, has them listed for $972 + shipping:
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.
 
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