I only replace shocks and struts with Billstein. You pay for what you get these days and I’ve replaced OE struts only to find out the leaking OE struts performed better than Monroe or KYB’s.
Tuned by STI. Often shortened to TBSTI. Was never available in North America. You get some exterior bits including wheels, Brembo brakes, STI 6 speed, Bilstein struts & other suspension improvements, some interior bits (namely seats), strut tower brace, different mufflers, and of course the ECU tune.
I've been on B4s for two years on my 2nd gen. Granted they're on springs that sit almost an inch lower than OE height, but performance is solid and consistent all the same. Id imagine they're even more plush at OE height versus that small amount of preload from sitting slightly lower. Worth the money.
Black if you want original ride quality. Yellow if you want a stiffer ride but with better quality damping and you’re not price sensitive.
My yellow billys are awesome
Your Kia Sorento doesn't need the yellow B6/B8 struts. Lol. The black B4 will give you the original ride height and oem ride quality. The yellow ones are for performance.
I noticed similar results with kyb excel g on my sienna.
I know Bilstein struts will sit higher than normal. Even though they are supposed to replace the oem struts. I had the same issue and ended up just using the Bilstein B8s with lowering springs.
Bilstein is low quality
I bought a pair of front struts with the spring assembly , I thought I was getting the top shelf units KYB , put them on and they rattle called they said that it was normal , nope I don't think so
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If choosing strut assembly across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.
We compare strut assembly across these categories:
In March 2026 on PartReview, strut assembly Bilstein were overall better than KYB.
In March 2026 on PartReview, strut assembly Bilstein were overall more popular than KYB.
By vote balance, strut assembly Bilstein surpassed KYB:
By number of reviews, strut assembly Bilstein surpassed KYB:
In March 2026, according to PartReview, strut assembly KYB led more car-specific ratings than Bilstein:
KYB are chosen by owners of cars such as: Subaru Legacy, Subaru Forester, Subaru Outback, Toyota Camry, and others.
Bilstein are chosen by owners of cars such as: Volkswagen Jetta, Volkswagen Corrado, Volkswagen Passat, and others.
If this comparison didn’t fully answer your question, there are many others on PartReview.
For example, comparisons of strut assembly KYB with: Monroe, KONI, GABRIEL, Sachs.
Also available: comparisons of strut assembly Bilstein with: Monroe, KONI, GABRIEL, Sachs.
You can also see who is better among other strut assembly manufacturers: Monroe or Bilstein, KYB or Monroe, Bilstein or KONI, KYB or KONI, Bilstein or GABRIEL.
