What shops have you had good luck with for porting YZ250F heads?

Rider 5280
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Rider 5280
Edited Date/Time 3/6/2021 7:34pm
I am looking to find a solid shop that has a TON of experience with porting YZ250F heads.

Do you have any solid recommendations?
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yzf162
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yzf162 3/6/2021 7:43pm
3/6/2021 7:43pm
TZR does a great heads for those bikes. Im having them build my 2018 yz250f race motor this year.

Othere good builders for that head.
Bundy Built: JGR Yamahas motor guy
Williams motor works: solid work here
DASA: Don't sleep on this shop. Great engine work for the yzf.
Yoshi and rocket exhaust have good work for those heads. Yoshi even has a long rod piston developed for it.


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coopernicus
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coopernicus 3/6/2021 7:57pm
3/6/2021 7:57pm
Rider 5280 wrote:
I am looking to find a solid shop that has a TON of experience with porting YZ250F heads.

Do you have any solid recommendations?
There is a really good tuner in Denver area who I can maybe contact and get you some advice. He's been a long time Yamaha tuner for the best Yamaha shop in the Denver metro area. I believe I know who you are as I live 2 minutes from you as I recently bought some TuBLiss from you as well as a KX triple clamp a couple of years ago...If so, I can text you some info!

Eric
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Rider 5280
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Rider 5280 3/7/2021 11:52am
3/7/2021 11:52am
Thanks Eric - I am definitely interested to hear. Go ahead and text me!
UGOTBIT
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UGOTBIT 3/7/2021 1:34pm
3/7/2021 1:34pm
Twisted has those Club MX bikes looking pretty sporty
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Rider 5280
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Rider 5280 3/7/2021 3:25pm
3/7/2021 3:25pm Edited Date/Time 3/7/2021 7:25pm
Twisted was my go-to.

I've tried emailing Jamie at Twisted like 10 times, I've tried calling more (it was this past fall, actually). I just can't get them to respond or pick up the phone, so literally - where do I even start?

I am not just sending parts. That seems like a bad idea.
UGOTBIT
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UGOTBIT 3/7/2021 5:12pm
3/7/2021 5:12pm
Rider 5280 wrote:
Twisted was my go-to. I've tried emailing Jamie at Twisted like 10 times, I've tried calling more (it was this past fall, actually). I just can't...
Twisted was my go-to.

I've tried emailing Jamie at Twisted like 10 times, I've tried calling more (it was this past fall, actually). I just can't get them to respond or pick up the phone, so literally - where do I even start?

I am not just sending parts. That seems like a bad idea.
Understood.

Jamie got right back to me when I inquired about sending in my ECU for a re-flash. Got it back with no instructions or a spec sheet for map switch settings. I emailed Jamie twice, got no response. Called the shop, got someone that sounded new and said they would call me back with info. Never got a call back. Called again two days later and finally got someone and got the info I needed.

I think they are really, really busy. It's SX season and prime West coast riding time. I agree though, wouldn't want to send my stuff off without talking to a human, then who knows when it would come back.
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Rider 5280
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Rider 5280 3/7/2021 6:44pm
3/7/2021 6:44pm Edited Date/Time 3/7/2021 7:26pm
Yeah, Jamie is the guy I'd trust with a 270 big bore given his experience with YZ250F big bores. I'll think about it some more, but the last thing I want to deal with is a ghost if stuff goes sideways. Thinking ...
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Moto520
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Moto520 3/7/2021 6:55pm
3/7/2021 6:55pm Edited Date/Time 3/7/2021 6:59pm
TZR......great work. He is a great engine builder with great attention to detail. He did a big bore on my Honda CRF270 and it’s great. The builders seem really busy right now so communication is everything.
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yz133rider
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yz133rider 3/7/2021 10:02pm
3/7/2021 10:02pm
Shoot an email to Tom Morgan or call him. Ask him what he can offer for your bike. I just sent my Tm 300 cylinder to him, isn’t even there yet. Always answers promptly.
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navalseabee
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navalseabee 3/8/2021 7:12am
3/8/2021 7:12am
Rider 5280 wrote:
I am looking to find a solid shop that has a TON of experience with porting YZ250F heads.

Do you have any solid recommendations?
I just had Williams Motowerx do a head and cam packages for my 2021 YZ250F. I wrote a full review at the link below. I currently have 4 hours or so on it and am still extremely pleased, the power carries so much farther and stronger than the stock stuff.


https://www.vitalmx.com/forums/Moto-Related,20/Williams-Motowerx-built-…
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seth505
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seth505 3/8/2021 9:38am
3/8/2021 9:38am
I agree they all seem super busy. I recently tried contacting several by using their own online forms and being very specific of what I was looking for. Only XPR got back to me and they were super nice as well.
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PTshox
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PTshox 3/8/2021 6:18pm
3/8/2021 6:18pm
YZ250F head = DASA racing in River side, Ca. They do CNC porting for these heads.
I will be sending him my head once I do a top end.

Phone: (951) 681-1131 ask for Dan. He owns it.
navalseabee
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navalseabee 3/9/2021 4:11pm
3/9/2021 4:11pm
Rider 5280 wrote:
I am looking to find a solid shop that has a TON of experience with porting YZ250F heads.

Do you have any solid recommendations?
sent you a PM
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