I think there’s always a bit of confusion around this point so i’ll throw my 2p in… This stuff was never Works Kit suspension by Pro Circuit. It may have come with those Works Kit fork decals but it was a few small parts that they sold that you added to your OEM suspension for a few hundred dollars. Riders felt the 99 was too long so Bones had those fork caps designed so you could push the forks further through the clamps without hitting the handlebars. Pro Circuit’s actual ‘Works Kit’ suspension (the stuff the guys on the team used) was actually sold to the public and cost around $3500 for forks and shock in 1999. It was still partly based on a stock fork but used one-piece upper tubes that were Kashima coated, DLC coated lower tubes with the OEM cast lugs hard anodised. They used the flush fork caps and had quite a few internal changes (lots of the plastic parts are replaced with coated aluminium ones etc. The shock was a 2 piece construction with Kashima coated aluminium mated to a sand cast upper piece with different compression/rebound adjusters. So yeah, whilst the parts in your forks may have come as a Kit from PC with those fork decals, they were never sold as, or intended to be, the $3500 Works Kit suspension that they sold and used on their Team bikes.

On the fork bushings you said that the look worn, look at the other side, thats where the actual wear takes place. The side that you mentioned is where the actual bushing sits on the inner fork tube. If you look closely at these bushings you can actually see if they were misaligned by the wear of these bushings. I have been doing this stuff since the early 90's and I have seen my share of this stuff and only tryto be helpful. I am like everyone else on here, I was expecting to see more modifications than what is there. Great video and looking forward to seeing these all cleaned up!

This is very common when race bikes at the higher level get sold they always take the good stuff out and make the shock and forks pretty much stock

Greg, you needed to measure the thickness of the shims/stacks to verify that they were the same. Great video as usual.

You've gotta look at the mid-valve! That's where most of the magic happens in forks is through the midvalve. I wouldn't be surprised if it was the same like the shocks though. If you do, it would be awesome to share your findings on the shim stack.

A bit disappointing in the difference! I was expecting a lot more. Makes you wonder if all the kit components were swapped out at some point in time. Especially the valving being identical to OEM..

I actually raced with the "works" kit shown. The top blue cap was called a flush mount cap because the Kawasaki turned so badly that Pro Circuit made these to lower the forks in the clamps without hitting the bars. This was also the timeframe when they introduced the 20" front wheel. I had both on my race bike. It turned slightly better but the frame was too flexy for the massive swingarm. The frames were weak too as I broke them 5 different times! Kinda was an era when there were junk bikes and this was one if you ask me!

Wow!!! This was a huge shocker to me!!! I was expecting some black magic or voodoo inside the works suspension. I wonder if there are different levels works suspension depending on the riders? Thanks for another great video, Greg!!!

your rebound nut is really the base valve compression. Rebound and mid valve is in the cartridge tube . Valving shims is where the magic happens . The shock piston has been surfaced to clean it up. The PC piston is stock and not surfaced to clean it up.

Not kyb A or B kit stuff just stockers with some of PC fork bits added or changed. It just has a cool name. Those kits weren't very expensive was low budget stuff.

Another cool video. Awesome to see the difference or lack of difference.

Wow...the video that Pro Circuit didn't want us to see!!!! Yet another perfectly timed video Greg, I've been debating whether I should upgrade my 99's suspension and my conclusion is now a resounding NO. You just saved me a stack of cash bud 👊

Great video Greg!!

You have to measure the thicknesses of the shims. That's what creates stiffening effects.

Here’s a trick when you purchase a new bike, before you send your shock out for a re-valve, bleed the shock with good oil and set the proper nitrogen pressure, I never came across a shock that had more than 80 psi, Honda motorcycle mechanic for 27 years

it was probably put back to stock before it was sold

Well perhaps production suspension is the same now as old school a kit stuff. James and Ricky often say how good bikes are today. Makes me wonder if the factory stuff today has evolved or still similar.

I can’t believe a snap ring is all that keeps our forks from coming apart while we are riding

Maybe the original suspension was so good that it didn't take much to make it an "A" kit. Factory forks are "good for everyone" works kits are modified for the specific rider. Did you disassemble the valve stack and MIC everything? Maybe the shim stacks are different. Maybe nowadays, with all the coatings, the improvements in tech, makes a bigger difference on the internals. Either way, nice video! Thanks for sharing.

1- You will not damage the internals if you do not softern clickers. Just makes it harder to seperate and especially bleed as the beeld are more restricked. Also PC A-Kit forks are not true A-Kit forks, they are frakenstien A-Kits. I have had both 49mm PC and Factory Only A-Kits (Showa) that I ran on a 2008 CRF450. The PC kits was bought directly from PC and the Factory only was bought from a Friend that had connections and the Forks/Shock were David Milsaps 2008 SX kit and there is no compairsion between the two with internals. Everything in the Factory Only Showa was coated and pistons were milled as well as having 19mm dampening rods that ran 24mm face shim on the MV and a 34mm Face shim on the BV. The PC's had 22mm MV and 32mm BV with a 16mm inner Dampner rod. Shock was the same everything was polished and coated. Larger piston ports and port shape as well as the HSC adj was a different design

Maybe the original suspension was so good that it didn't take much to make it an "A" kit. Factory forks are "good for everyone" works kits are modified for the specific rider. Maybe nowadays, with all the coatings, the improvements in tech, makes a bigger difference on the internals. Either way, nice video! Thanks for sharing

You should ask bones, if this really is a true ser or works kit forks they used? Did you use a caliper to measure the shims? By the look of it, it feels like a spacer at the clevis and the different cap is not enough to justify them as kit, should be more differences, but also if the springs are unobtanium. Nvth looking forward to the end results after coatings etc. 👍🏼

i bet the difference is in tolerances on the part. i mean pairing them up the most closest to the ideal dims on the pro vs rest on the oem.

Factory wrench makes a nice fork cap wrench master set!!! Money money money 😅 but it is a nice set that comes with near every cap wrench, ktech also makes full kits !!

Should tear the valve stacks apart and compare them I’ll bet there is quite a difference there

Thank you for the video

Great job on video.. Terrible that ProCircuit has ripped people off on their PURPORTED "WORKS" SUSPENSION

Kind of a bummer. I hope you didn't get taken. You could always ask PC what they think. I dont think its really "Top Secret" stuff anymore. Its just specs, coatings and larger MM, i believe.

the top is the rebound clicker and the comp is at the bottom

I rode a factory Honda once. I liked my stocker better. Mores not always better at least on a non-competitive level.

Where did u buy them from? If you didnt buy them directly from PC, you never know through the years whos done what with them

You need to use dial calipers to check diameters and thickness in shims

You seem to remove the fork bushes off in the wrong order to me, the thinner bush that has the grey teflon on the inside comes off after the wide split bush comes off . plus when you were talking about wear in them you were looking at the wrong surface , the grey teflon is the wear point, this is the surface that either contacts the aluminium top tube (wide split bush) or the chrome of the stanchion (narrow solid bush)🤷🏻‍♂️

The difference is the "KYB Works Kit" sticker.

The red ring is a lowering spacer ..I think

Thought the rebound was at the top on those style forks ?

Wow, unless theres a huge difference in the midvalve, it's the exact same fork and shock as what came on your bike, you just paid more for it than you do your whole bike.... I'm wondering where he got it from.. Was this a 'works' kit the public could buy and he bought it from some random person..? or did Mitch remove it all before it was sold to prevent anyone from getting their hands on his suspension at the time? If it was available to the public, I'm wondering if the guy kept all the really special internals and replaced everything with stock valving and shim stacks... If that's seriously their 'works' shock and forks, all you need is to get it re-sprung, potentially a different mid valve, along with the spacer on the shock below the bumper, along with a different bumper, and you got yourself 1999 'works' suspension.... there ain't no way that's all they had in their PC bikes. Even the shock bladder was the same...it really doesn't make sense. I'd hate to think Mitch rips people off that badly if he was selling stock stuff to the public for that price...and if he was, how did no one realize it? You could use your stock upper and lower forktubes, all the internals, and spend $800 which would include fork and shock valving if the mid valve is different, change spring rate, different shock bumper and spacer, replace all worn parts, add new oil, and buy the different fork cap/pushrod system to change the clicker adjustment and be running supposed works stuff....Even if the mid valve is entirely different and that's where all the magic is, how is that justify the cost and why you need to buy the whole fork and shock as a kit, rather than use your existing stock stuff to build it from? Idk what he sold the kits for back then, but a couple years ago the works stuff he was selling for the current bikes was more than a brand new bike...I hope he's not doing similar stuff today as he did in '99, cause it's a total rip off if so.

Bud, if you need help with this topic, get ahold of me. Those are not " A " kit stuff. If you would like to see and take apart real a kit suspension let me know.

I didn’t turn my settings all the way soft when I took mine apart💀 whoops. Cool ass video though!

I have the works kit in my ‘96 KX. It’s a mod done to the forks where the change the bottoming system. There was no works kit shock. If that shock was revalved by PC it would have a different piston. Not sure what you have there but it’s not what you’re making it out to be.

Great video thanks

Those are open chamber forks, so the top cap is rebound, not compression.

I think someone just got some pro curcuit graphics and said they were a kit.

Gotta think technology and times have changed would be cool to see current but that also brings me to these companies don’t like u knowing what they have u can prolly get best money can buy but it’s not what is on these factory teams

You got the compression and rebound backwards

Rebound and compression ??

If you had the choice would you rather get a new suspension kit or revalve on a new bike.

Obviously the PC have a more expensive stickers on it.

Seems this "Factory" Suspension is nothing but a Placebo! One Anodised Top Nut & 1 Red Bottom Shock spacer!! Someone got Ripped the F Off! 🤨 Cheers 👍

I thought the guy calling the open end wrench a socket was disappointing .

this is an old school race tech gold valve style kit for a bike to go with the oem components not A kit lol

4:40 The bronze coating on the inside of that bushing is not the wear surface and had nothing to do with the action of the fork. The coated "OD wear surface" was still in good shape. Sorry,---------Amateur.

I think you got took on the pro circuit stuff it all stock internals

I think you got ripped off bud. Because there has to be more to basically factory suspension. Or someone just threw pro circuit stickers on it

NGL, i think you got scammed. Im pretty sure you can buy those fork caps aftermarket

I think you might have gotten ripped off. Valving and coatings especially are different. What you have is not factory suspension even remotely.

Whew, they audio on this one…voice is clipping the mic 100%. Great topic, just hard on the ears.

Definitely not A kit forks. That’s just a simple off the shelf PC suspension revalve and novice or intermediate would’ve gotten at the time. Nothing special, just a small personalization for a rider.

bro i'm sure this is really interesting and informative but shouting into a mic that's 6 inches from your face makes it entirely unwatchable. all the best.

Another Pro Circuit rip off.

Good video Greg. I bet those shims are different thicknesses. The amount of shims is not supposed to change from my understanding.