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Boyesen Rad Valve
Boyesen Rad Valve

$147.99 - $251.99
8% Off - Save up to $21.00

Select your bike to see if this reed valve system fits
Item #BOY000C

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15 Reviews
4.9 out of 5 stars
5 Star   13 4 Star   2 3 Star   0 2 Star   0 1 Star   0
All Reviews
1Taz Verified Purchaser
3 months 28 days ago K.C.K.
Durability5/5Ease of Installation5/5Performance5/5Style5/5
Rad valve

Quality product. Came with gasket and all hardware to put on my 2012 KTM 300XC . Crisper response . overall worth what it cost.

KxKid119 Verified Purchaser
Over 6 months ago Presque Isle, MI
Durability5/5Ease of Installation5/5Performance5/5Style5/5
Easy installation

All hardware included. Very easy to install. Noticable increase in acceleration. The only downside is that you have to buy your own jets.

nick Verified Purchaser
Over 7 months ago
Durability5/5Ease of Installation2/5Performance5/5Style2/5
Good stuff

good stuff but i wish they suggested me a main jet and slow jet to match the specs but other than that great!

Roswelldude Verified Purchaser
Over 7 months ago Chapelhill, N.C.
Durability5/5Ease of Installation5/5Performance5/5Style5/5
Boysen Rad Valve > Moto Tassinar V-Force4

This reed valve assembly is the best aftermarket product available for two-strokes. This product is a one piece metal design as opposed to the V-Force 4 or 3 design which is two pieces requiring an additional gasket that can go bad. This design also incorporates a metal reed valve manifold which is attached to the reed housing that comes with the necessary gasket to connect it to the carb. The inferior V-Force4 design requires a rubber connector boot to connect the assembly to your carb whereas the Rad Valve has a built in metal version of the same thing.

EnduroG Verified Purchaser
Over 9 months ago NC
Durability5/5Ease of Installation5/5Performance5/5Style5/5
Perfect for the woods!

I like the Rad valve much more than the Vforce3 reeds especially for woods riding.

3wheelus Verified Purchaser
Over 9 months ago Los banos, ca
Durability5/5Ease of Installation5/5Performance5/5Style5/5
Well built

I run these simply to do away with rubber intake boots that are usually cracked on older bikes i buy. Great price and great fit

Over 9 months ago Tulsa, OK
Durability5/5Ease of Installation5/5Performance5/5Style5/5
2005 YZ250 RAD

The stock block and reeds will last forever and unless you are looking to make your bike really sing, these may not be for you. My motocrosser sucks Vforce reeds and chews them up like it is nothing. The stock ones with new pedals are sick, but the RAD valve is a ported jobber that will sustainably perform in all conditions.

Juicy Verified Purchaser
Over 11 months ago AL
Durability5/5Ease of Installation5/5Performance5/5Style5/5
Runs Great

I paired the reeds with new FMF pipe & R304 shorty on a 2014 YZ125 I bought used. Everything runs great but I never road the stock reed valves so don’t know how it compares. But I am happy.

JT3 Sandsports Verified Purchaser
1 year 3 months ago Sand dunes
Durability5/5Ease of Installation5/5Performance5/5Style5/5
Worth the purchase

I have always ran the Rad Valve on all my bikes. Never been disappointed! Bolts right on every time. I’m a dune rider and makes that 2 stroke sing!!

Killroy Verified Purchaser
1 year 7 months ago SW Florida
Durability5/5Ease of Installation5/5Performance5/5Style5/5

You can't go wrong with Boyesen reeds. The Rad valve is awesome no more rubber intakes.

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15 Questions
Answered:   13
Not Yet:   1
Q: I have a 2009 kawasaki kx100 will i need to re-jet my carburetor for this product??
4 months 13 days ago
Q: Which set of reeds does this come with the Super stock or the pro reeds?
Over 7 months ago
Top 10
Over 7 months ago
A: The Rad valve uses is own set of reeds. Designed ONLY for Boyesen RAD Valves.
Q: Would you have to rejet your carburetor if i get the reeds 
Over 10 months ago
Dan Gearhead
Top 25
Over 10 months ago
A: Carburetor re-jetting may be required depending on the year, make and model of your bike, as well as other modifications that may already be done, or the location or style of riding.
Q: Can this be used in conjunction with the moose racing spacer or a spacer in general? 
Over 10 months ago
Top 1
Over 10 months ago
A: That question would be better answered by the Tech Dept @ Boyesen. They would have possibly doe the R&D to be able to help you further. Boyesen Racing Phone: (610) 756-6818
Q: Does it have the carbon fiber reeds?
Over 12 months ago
Top 10
Over 12 months ago
A: It utilizes a carbon fiber top reed and a durable fiberglass / epoxy bottom reed.
Yz85 rider
Q: Does this come with all the bolts?
1 year 1 month ago
Q: Does this rad valve come with reeds?
1 year 4 months ago
Top 25
1 year 4 months ago
A: Yes it does! Get out and rip!
Q: Is there a replacement gasket for this part?
1 year 8 months ago
Boyesen Rad Valve RAD-21J 2005 rm125
Top 10 Contributor
1 year 8 months ago
A: You'll just need to order a OEM gasket for it.
Q: Does it include the intank boot that connects to the carb?
Over 3 years ago
My intank boot for my Yz 85 is dry rotted
MotoSport Staff Expert
Over 3 years 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?
Over 3 years ago
Expert MotoSport Staff
Over 3 years ago
A: Yes the Boyesen Rad Valve (RAD-30C) would be the same for the Yamaha YZ85 2002-2016.
1 - 10 of 15

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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
Stock Motor RAD-36A
Boyesen Rad Valve RAD-40B
Boyesen Rad Valve RAD-42D
Boyesen Rad Valve RAD-46
Boyesen Rad Valve RAD-62
Boyesen Rad Valve RAD-11K
Boyesen Rad Valve RAD-33J
Boyesen Rad Valve RAD-36M
Boyesen Rad Valve RAD-40A
Boyesen Rad Valve RAD-41C
Boyesen Rad Valve RAD-42E