Posts
181
Joined
12/15/2015
Location
Phoenix, AZ
US
Edited Date/Time
8/13/2018 11:05am
Got this 09 Yz used back in 2014 and rode the crap out of it. It looks clean but she's tired and due for a refresh. Also wanted to try the four stroke updates.
Parts List:
- 09 Yz250f swinger (perfect bolt on)
- 09 Yz450f linkage (perfect bolt on)
- 17 Yz450f rear axle
- 09 Yz250f rear brake setup
- Polisport restyle
- Yz technical touch dlc fork lowers (06 sss forks for sale or trade if anyone is interested)
- Neken triple clamps
- New bearings throughout
- 12 Crf250 Front brake setup (perfect bolt on)
- Galpher oversized rotor
- Faast rear brake spring delete
Parts I am looking for:
- 09+ YZ four stroke rear hub / wheel
- Clean radiators
- Radiator hoses
- Oversized bars
- WC clutch perch
- FMF silencer
- New chain guides / rollers
- Lowered foot pegs
- Tall seat
Gonna be a slow build so just trying to see the end / what color fork guards to run.
Bought the Neken clamps off here and the OP said the clamps were for Yz250f but fit the Yz two strokes due to upper clamp being bored out. The aftermarket stem is almost a quarter of an inch shorter than the OEM one but I didn't find that out until I already pressed on the bottom bearing. So the nut is on about half way threaded without a washer. Kind of sketched out about running it but I think it should be ok.
Parts List:
- 09 Yz250f swinger (perfect bolt on)
- 09 Yz450f linkage (perfect bolt on)
- 17 Yz450f rear axle
- 09 Yz250f rear brake setup
- Polisport restyle
- Yz technical touch dlc fork lowers (06 sss forks for sale or trade if anyone is interested)
- Neken triple clamps
- New bearings throughout
- 12 Crf250 Front brake setup (perfect bolt on)
- Galpher oversized rotor
- Faast rear brake spring delete
Parts I am looking for:
- 09+ YZ four stroke rear hub / wheel
- Clean radiators
- Radiator hoses
- Oversized bars
- WC clutch perch
- FMF silencer
- New chain guides / rollers
- Lowered foot pegs
- Tall seat
Gonna be a slow build so just trying to see the end / what color fork guards to run.
Bought the Neken clamps off here and the OP said the clamps were for Yz250f but fit the Yz two strokes due to upper clamp being bored out. The aftermarket stem is almost a quarter of an inch shorter than the OEM one but I didn't find that out until I already pressed on the bottom bearing. So the nut is on about half way threaded without a washer. Kind of sketched out about running it but I think it should be ok.
Has anyone ever tried dying a tank??
The Shop
As far as the nut goes, I would be more worried about the clamp not being seated fully on the mating surface of the steering stem than the nut not being fully engaged. There's quite a bit of force going through that clamp being transferred to the steering stem, and if it isn't fully seated to the mating surface I think you could end up with an ovular clamp over time.
How much were you looking to get for the stock forks? I'm realizing I need to get a set of suspension I can throw on when I got to the track, and another set to set up for the trails.
Check this thread on page 6 where we talked about running these clamps. He was running the same set up.
https://www.vitalmx.com/forums/Race-Shop,42/2015-YZ250-Build,1302813?pa…
Do you have any pics of your setup when you had it?
I've put a couple of sets of 2015 "F" clamps that I bored on YZ125's for a friend of mine without issue either.
And since I've done several "F" swingarm conversion I can tell you that if you are using the '09 "F" pull arms and rocker that your rear end is setting about 12mm higher than the stock set up. You have to use a 143.5mm pull rod to get the rear end back to the stock height.
Thanks for the info on the rear end. I know you have that devol link just gotta get this figured out first...
5/30/2018 7:39pm
Edited Date/Time: 5/30/2018 7:41pm
I've put several pair of "F" clamps on YZ's using the "F" stem without a problem.
I just took a set of NEKEN "F" clamps off my YZ last week. A lot of people act like you can't do this or there's big difference in the stems, but they slide right in without a problem.
I have a set of the non-SFS clamps that bored for the YZ forks.
Helder posted back;
5/30/2018 9:01pm
Thats how im running them now wothout a problem so far
Send them back and I'll give you your money back or give you the Devol link to make up for your trouble.
Was there powder coat in the steering head before you put the races back in?
I made sure both the seats were clean before putting the races in. That was my first thought was that one wasn’t seated properly but they’re in there. I’ve been scratching my head for days trying to figure out what’s up. Can’t fight the 5mm difference being an issue.. pretty sure I would be able to run the washer with the nut and have the stem sit flush with that extra length.
Edit: I think the yz125 takes the shorter stem so that is probably why it worked on your buddies 125s.
I don't know what I do different, but I had the nut flush with the top of the clamp.
I have no intentions of screwing anybody over and if you can't get them to work and want to return them that's cool.
If I was trying to screw you over I never would have even posted in my defense. But, I truly did have them on there as I sent them to you with the nut flush or I never would have offered them like that and I wouldn't be on here arguing about.
Whatever will make you happy I'm good with.
Not a huge difference between them, but enough to cause an issue. I wouldn’t run it as is, that’s for sure.
You can press the stem out in a vise or a press. It should pop out. You might have to apply heat, but I’m not sure if that’ll mess with the anodizing.
The two strokes have 2mm larger top clamp diameters than the four strokes.
There are three stem lengths:
YZ250 (two stroke) = long stem (what you need)
Newer four strokes = medium stem (what you have here)
YZ125 = short stem
All the stems are 5mm different from one-another. I looked at things pretty hard trying to come up with a "universal" stem design, but unfortunately it just wasn't possible. Gotta use the proper stem length for the bike.
I don't know about the Neken stuff, but I'd be surprised if they used a different stem interface in the lower clamp than stock. So you can most likely swap the Neken stem for your stock stem and you'll be good to go. I wouldn't run it as-is. You'll need a good press to do that, though, and likely a press tool to properly install the bearing. Also, you'll need to properly support the clamp in the press to avoid ruining the clamp. Best to take it to a shop that knows what they're doing if you don't have a press at your disposal.
Pit Row
I used 2013 YZ250 clamps on my 05 and they went together no problem. I didn’t find the forks to bow in at all. I measured before and after with a micrometer and I didn’t have any brake rotor drag either. The threaded end of the axle does stick out a mm though.
I’ve got this stuff if you need it still;
- 09+ YZ four stroke rear hub / wheel
- Clean radiators (fill side)
- Oversized bars
- FMF silencer
- Lowered foot pegs (fastways)
Everyone who does the swap can feel an improvement in handling plus you save over a few lbs bc you have to use the newer hub & axle
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