Love the JBI perch. Running KYB fork on my Beta 390 race edition with my own valving. JBI perch allows me to run softer valving and have good bottoming resistance
Those mods make a lot of sense. I’d love to hear some feedback from test riders doing a before and after test with these mods. Any chance you could do a video sometime with some well known test riders (like maybe Keefer, Pat Foster, Ping, etc. or people like that) trying this stuff out and giving some feedback??? If so that’d be awesome and probably help sell a lot of suspension work. 👍 P.S. Love your videos and your explanations on how things work.
Thank you! Working on increasing the sample size of test riders and feedback. And surely working on trying to get with the more well known ones. The main focus though is sample size. The feedback of a large group is often more valuable then the feedback of an individual.
Great comparison video. Is it possible to make new bottoming cones or cylinder as you call them for the KYB to mimic those on the WP so the bottoming resistance started earlier? Thanks
Love all the info. Got the kyb on my 150 sx. Now I’m looking into getting my Fc450 done. Haven’t been able to decide yet. Total price may be the only decision. Do you have price comparisons on both with and without upgrades?
Hello, and thanks for the comment. In the video description there are links to each build page with details and pricing info. The JBI Spec WP kit is $1895 The JBI Spec KYB kit as shown is $2260
Hello. Yamaha marketed the term "Speed Sensitive Suspension" and used "SSS" as shorthand. The manufacturer of the forks KYB refers to the forks as AOS (air oil separate suspension / system) which is a good way to describe the type of fork it is. AOS is also interchangeable with the terms "closed cartridge" and "twin chamber" because that is the same style / type of fork. SSS does not describe the type of fork accurately because all suspension is speed sensitive (to a reasonable extent) regardless of design / type. The KYB AOS fork is what Yamaha calls KYB SSS.
How did you manage to acquire the SSS damping systems as a kit since this is almost proprietary to Yamaha? Just asking because the original KYB for WP is essentially an AOS. Would that then mean that simply changing a part (or two) within the cartridge system can then convert a standard AOS to SSS?
Hey Paul! Thanks for tuning in There's not a huge performance difference between the WP 6500 Kit and KYB Conversion Kit, a lot of it comes down to rider preference. Both spring conversion kits are a significant step up in overall performance when compared to the AER48 fork. Even a revalved AER48 fork, which responds well to a properly setup revalve, still is not on the same performance level as both spring kits.
Thads what I’m wanting to know but they will never give a straight answer as it would mean sales of KYB kits would drop so they stay neutral. I had the KYB kit on my 2022 KTM 350 SX-F and it was ok but nothing to rave about as I could feel the extra weight that the springs bring. Now I’m considering the 6500 kit for the new 2025 350 SX-F but MXA review says their test riders could tell a weight difference on the front and didn’t care for it. So I’m on the fence because I like the lighter feel of the air fork on the track.
@@cantgetright3657 Vet A Rider FC450 2020 / 2021 / 2022 here. I've run Cone Valves, Revalved AER, KYB Conversion, MX-Tech Lucky Conversion about 300 hours total not one ride on one track. Here's my take: Dislike Cone valves the most = Heavy = very noticable and didn't offer much over a well revalved AER. KYB = Best at following terrain (especially in corners) beat you up the least in the ruff but offer the least bottoming resistance. Lucky Conversion not as "plush" as kyb but all MX-Tech offferings are the lightest spring conversion out there and was closest to AER in weight. Huck valve is best bottoming resistance of all spring conversions. A well valved AER is noticably the lightest and if you don't mind it "ramping up" a bit harsher than the spring conersions it's the go to setup. If I were younger I'd stick with the AER Best value, best bottoming and never does anything out of the ordinary. The KYB beats me up the least so for a vet it's a good trade off most of the time. However, IMHO the AER handles flat landings, slap downs, and falling out of the sky with the best bottoming resistance of all the forks. Nothing comes close. You get used to the weight of the SSS and the MX-Tech stuff. It's only a few pounds over the AER, but once you ad 4 pounds or more to the front it is very noticable and I didn't like it same as MXA
You never mention the WP 6500 kit as I’ve had the KYB conversion kit on my 2022 350 SX-F and eh, it was good but I didn’t care for the extra weight. My buddy owns Total Control Racing Suspension shop and says I’ll love the WP 6500 kit but I brought up the weight factor again and he claims I won’t notice it. He too doesn’t care for the cone valves but says the 6500 is much better than stock AER. Just sold me 23 350 SX-F and left it stock and while it was good, I hated the slap down feel, especially when coming down on the back tire first due to bad form. I could probably just stick with the stock setup but for $1500 installed and all of the good reviews, I’m very tempted to take a chance on the WP 6500 kit. Thanks for the input.
Hey JB I was wondering if the kyb fork cap (the blue one) would fit a Showa fork on a 2022 crf250r. I know showa and kyb are very similar and I really don't like the raised style of the showa and would like to have a cap like the blue one.
![[MV] A leap of faith...ความเชื่อใจครั้งสุดท้าย (From "Petrichor the series")](http://i.ytimg.com/vi/U1piZH2CNXA/mqdefault.jpg)
Love the JBI perch. Running KYB fork on my Beta 390 race edition with my own valving. JBI perch allows me to run softer valving and have good bottoming resistance
Thanks for the feedback. Glad to hear its working well.
Those mods make a lot of sense. I’d love to hear some feedback from test riders doing a before and after test with these mods. Any chance you could do a video sometime with some well known test riders (like maybe Keefer, Pat Foster, Ping, etc. or people like that) trying this stuff out and giving some feedback??? If so that’d be awesome and probably help sell a lot of suspension work. 👍
P.S. Love your videos and your explanations on how things work.
Thank you! Working on increasing the sample size of test riders and feedback. And surely working on trying to get with the more well known ones. The main focus though is sample size. The feedback of a large group is often more valuable then the feedback of an individual.
Great comparison video. Is it possible to make new bottoming cones or cylinder as you call them for the KYB to mimic those on the WP so the bottoming resistance started earlier? Thanks
Thank you. It is possible to make taller bottoming cones. I could see slightly taller being beneficial but nothing too crazy.
Love all the info. Got the kyb on my 150 sx. Now I’m looking into getting my Fc450 done. Haven’t been able to decide yet. Total price may be the only decision. Do you have price comparisons on both with and without upgrades?
Hello, and thanks for the comment.
In the video description there are links to each build page with details and pricing info.
The JBI Spec WP kit is $1895
The JBI Spec KYB kit as shown is $2260
Great video, I run the ohlins setup have buddy's that run those all seem great. Cool to see the differences
Ohlins makes some great suspension.
Do you have a video explaining difference between AOS and SSS? And how does that differ from the KYBs that come on Beta and Sherco?
Hello. Yamaha marketed the term "Speed Sensitive Suspension" and used "SSS" as shorthand. The manufacturer of the forks KYB refers to the forks as AOS (air oil separate suspension / system) which is a good way to describe the type of fork it is. AOS is also interchangeable with the terms "closed cartridge" and "twin chamber" because that is the same style / type of fork. SSS does not describe the type of fork accurately because all suspension is speed sensitive (to a reasonable extent) regardless of design / type. The KYB AOS fork is what Yamaha calls KYB SSS.
@@RideJBI Ok cool. Thanks for clearing that up man. 🇺🇸 👍 Those manufacturer marketing guys go all out. 😂
How did you manage to acquire the SSS damping systems as a kit since this is almost proprietary to Yamaha? Just asking because the original KYB for WP is essentially an AOS. Would that then mean that simply changing a part (or two) within the cartridge system can then convert a standard AOS to SSS?
❤❤
Appreciate the video. Between the KYB and the 6500, is there any meaningful difference on rough tracks? How would you compare either to the AER?
Hey Paul! Thanks for tuning in
There's not a huge performance difference between the WP 6500 Kit and KYB Conversion Kit, a lot of it comes down to rider preference.
Both spring conversion kits are a significant step up in overall performance when compared to the AER48 fork. Even a revalved AER48 fork, which responds well to a properly setup revalve, still is not on the same performance level as both spring kits.
What's better, WP exact pro fork or KYB conversion?
Thads what I’m wanting to know but they will never give a straight answer as it would mean sales of KYB kits would drop so they stay neutral. I had the KYB kit on my 2022 KTM 350 SX-F and it was ok but nothing to rave about as I could feel the extra weight that the springs bring. Now I’m considering the 6500 kit for the new 2025 350 SX-F but MXA review says their test riders could tell a weight difference on the front and didn’t care for it. So I’m on the fence because I like the lighter feel of the air fork on the track.
@@cantgetright3657 Vet A Rider FC450 2020 / 2021 / 2022 here. I've run Cone Valves, Revalved AER, KYB Conversion, MX-Tech Lucky Conversion about 300 hours total not one ride on one track. Here's my take: Dislike Cone valves the most = Heavy = very noticable and didn't offer much over a well revalved AER. KYB = Best at following terrain (especially in corners) beat you up the least in the ruff but offer the least bottoming resistance. Lucky Conversion not as "plush" as kyb but all MX-Tech offferings are the lightest spring conversion out there and was closest to AER in weight. Huck valve is best bottoming resistance of all spring conversions. A well valved AER is noticably the lightest and if you don't mind it "ramping up" a bit harsher than the spring conersions it's the go to setup. If I were younger I'd stick with the AER Best value, best bottoming and never does anything out of the ordinary. The KYB beats me up the least so for a vet it's a good trade off most of the time. However, IMHO the AER handles flat landings, slap downs, and falling out of the sky with the best bottoming resistance of all the forks. Nothing comes close. You get used to the weight of the SSS and the MX-Tech stuff. It's only a few pounds over the AER, but once you ad 4 pounds or more to the front it is very noticable and I didn't like it same as MXA
You never mention the WP 6500 kit as I’ve had the KYB conversion kit on my 2022 350 SX-F and eh, it was good but I didn’t care for the extra weight. My buddy owns Total Control Racing Suspension shop and says I’ll love the WP 6500 kit but I brought up the weight factor again and he claims I won’t notice it. He too doesn’t care for the cone valves but says the 6500 is much better than stock AER. Just sold me 23 350 SX-F and left it stock and while it was good, I hated the slap down feel, especially when coming down on the back tire first due to bad form. I could probably just stick with the stock setup but for $1500 installed and all of the good reviews, I’m very tempted to take a chance on the WP 6500 kit. Thanks for the input.
Hey JB I was wondering if the kyb fork cap (the blue one) would fit a Showa fork on a 2022 crf250r. I know showa and kyb are very similar and I really don't like the raised style of the showa and would like to have a cap like the blue one.
Hello and thanks for the comment. The KYB fork cap would not fit or replace the Showa fork cap. The design is different.
Any supermoto stuff?
Ride JBI has minimal time with SM setups.