Boyesen Rad Valve

Boyesen Rad Valve
Boyesen Rad Valve

$147.99 - $251.99
8% Off - Save up to $20.96

Select your bike to see if this reed valve system fits
Description See Also: 5 Reviews 7 Questions Fitment Part Numbers
Item #BOY000C

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5 Reviews
4.8 out of 5 stars
5 Star   4 4 Star   1 3 Star   0 2 Star   0 1 Star   0
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All Reviews
Jmarkel475 Verified Purchaser Top 250 Contributor
Durability 4/5 Ease of Installation 5/5 Performance 4/5 Style 3/5

Great 2stroke performance part. Great for all around better performance.
Should be noticed especially on bottom end, holeshots and cornering. I would recommend a rad valve to anyone thinking about it.

Welchracing Verified Purchaser
San Diego, CA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5
Awesome product

The rad valve was exactly what my 2006 Rm250 needed. My stock intake was dry rotted and needed to be replaced so rather than spending the money on a new OEM part I went with Boyesen. The bike runs so much better now from the bottom to the top. I have no hesitation at all, just quick, crisp revs. It also made the hit of the power band more predictable which helps out a lot on the track. The product comes with everything needed to install including an intake gasket, intake coupling, and clamps plus they give you detailed instructions and suggested jetting settings. I will put one on every 2 stoke I own!

Boyesen Rad Valve
317x Top 1000 Contributor Verified Purchaser
Idaho, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5
High quality part.

I've always been a big fan of the Boyesen Rad Valve. This is my 4th one and I have no reason not to keep coming back. There is always a noticeable performance boost and the fit and finish is great. The housing is tough and the reed petals hold up as long or longer than stock and/or other brands.

mxben230 Verified Purchaser
San Luis Obispo , CA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5

I decided to try out the Rad Valve on my Rm 125 and am very satisfied. Being very sensitive to Jetting I had some concerns. It seems like the consensus is that the Rad Valve requires more jetting changes then the V force but is potentially a better mod. I believe this is true. Although I noticed an increase in performance right away. It became more noticeable when I leaned the main out a little more. The Rad Valve improved performance all over the Rpm range.
Will it make you faster? Probably not.
Is it worth the money? That depends on how much money you make and if you know how jet your bike. (MXA's secret jetting specs is a good place to start.) Or the FMF website!! =)
Will I Install a Rad Valve on every 2 stroke I own from now on. Yes!!

MURRAY312 Top 500 Contributor
Athens Tn.
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5
Proven quality.

Excellent performance as always.

7 Questions
Answered:   7
Not Yet:   0
Location: Pennsylvania
Q: Does it include the intank boot that connects to the carb?
1 year 1 month ago
My intank boot for my Yz 85 is dry rotted
MotoSport Staff Expert
1 year 1 month ago
A: Yes. Carb boot, Carb boot clamp and gasket provided. No modifications required.
Q: Will a 2008 yz85 rad valve fit a 2015 yz85?
1 year 5 months ago
MotoSport Staff Expert
1 year 5 months ago
A: Yes the Boyesen Rad Valve (RAD-30C) would be the same for the Yamaha YZ85 2002-2016.
Q: Boyesen rad valve?
2 years 11 months ago
Hi, will this replace the stock rubber part that the carb mounts to, because on my sons bike its all dry rotted. Trying to decide weather to buy the stock carb holder and v-force reeds or just the boyesen. If the boyesen will take care of the carb holder issue it will end up being cheaper for me. Thanks in advance
Expert MotoSport Staff
2 years 11 months ago
A: The Boyesen Rad Valve will come with the boot so you will not need to buy a replacement OEM one.
Q: Boyesen rad valve VS. v force?
Over 3 years ago
I want to add a little hp to my bike but im not sure which one to pick boyesen or v force some one help me decide.
MotoSport Staff Expert
Over 3 years ago Location: Portland, OR, USA
A: I would say either would be a good choice. The V-Force Reed Valve systems are by far the most popular choice when replacing your Reed Valve. Also, the V-Force reeds simply snap into place in the reed valve so changing the reeds is extremely quick and easy.
Location: Ohio
Q: What do I order for replacement reeds? I have the rad block already?
Over 4 years ago
My reeds are worn out and one is broken. I don't see replacements for the rad reeds.
MotoSport Staff
Over 4 years ago Location: Portland, OR, USA
A: The Rad Valve takes specific reeds from Boyeseen. If you can give us a call, we can get you taken care of with pricing and availability of the correct reeds for your 1994 YZ125.
Location: Longview, Texas
Q: Boyesen vs V Force?
Over 4 years ago
Why do the parts look so much different? The V Force is a cage that slips into the existing port on the intake and the Boyesen looks like it's an add on to the engine?
MotoSport Staff
Over 4 years ago Location: Portland, OR, USA
A: They really are both trying to accomplish the same thing. Realistically they they are pretty much the same except Boyesen integrates the intake manifold into their reed block instead of using the stock one. Both are trying to create a less turbulent and effective intaker charge into the engine, and they both do accomplish this. Typically the Boyesen valves are known to produce a little more bottom end, and the V Force's rev a little more freely. Personally on my 125's, i have always ran the V force's.
Location: Argentina
Q: Do you have the reeds for this part??
Over 4 years ago
It is for a suzuki rm 125 1998 with this boyesen kit.
MotoSport Staff
Over 4 years ago Location: Portland, OR, USA
A: We can get you the replacment Boyesen Rad Valve reeds for your 1998 RM125. Unfortunately we do not stock them and will have to order them in for you. Please give us a call at your convenience and we can get you taken care of for this item.
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See Fitments
# Part Numbers
Product Variant Manufacturer Part #
Boyesen Rad Valve RAD-01E
Boyesen Rad Valve RAD-01J
Boyesen Rad Valve RAD-03A
Boyesen Rad Valve RAD-15
Boyesen Rad Valve RAD-10A
Boyesen Rad Valve RAD-10E
Boyesen Rad Valve RAD-20A
Boyesen Rad Valve RAD-21J
Boyesen Rad Valve RAD-24K
Boyesen Rad Valve RAD-30C
Boyesen Rad Valve RAD-34J
Boyesen Rad Valve RAD-01A
Boyesen Rad Valve RAD-01F
Boyesen Rad Valve RAD-01I
Boyesen Rad Valve RAD-02F
Boyesen Rad Valve RAD-04A
Boyesen Rad Valve RAD-12C
Boyesen Rad Valve RAD-12E
Boyesen Rad Valve RAD-12J
Boyesen Rad Valve RAD-13
Boyesen Rad Valve RAD-25
Boyesen Rad Valve RAD-30A
Boyesen Rad Valve RAD-34I
Boyesen Rad Valve RAD-35A
Boyesen Rad Valve RAD-36A
Boyesen Rad Valve RAD-40B
Boyesen Rad Valve RAD-42D
Boyesen Rad Valve RAD-46
Boyesen Rad Valve RAD-62
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