Patented, one-piece, cast aluminum reed block system that delivers guaranteed bolt on performance. Carb boot, carb boot clamp and gasket provided. No modifications required, everything you need is in one box.
Boyesen's hot RAD valve provides plenty of offroad torque
Custom reed cage holds Boyesen's carbon fiber reeds
Sustains flow velocity through the valve and redirects intake charge for balanced distribution to intake ports
Quickens throttle response and ramps up horsepower throughout RPM range
Solid one-piece aluminum casting
Simple installation
Sold individually
Made in the USA
Product Note:
Specification
Details
Carburetor Type
Varies (make selection above)
Country of Origin
USA
Engine Type
Varies (make selection above)
Material
Varies (make selection above)
Quantity
Varies (make selection above)
Vehicle Fitment
Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.
Beta
250 RR 2T 2013-2024
250 RR Race Edition 2T 2017-2022
300 RR 2T 2013-2024
300 RR Race Edition 2T 2017-2022
Xtrainer 2015-2022
Honda
ATC250R 1985-1986
CR125R 1988-1997, 2000-2007
CR250R 2-Stroke 1984-2000, 2002-2007
CR500R 1990-2001
TRX250R FourTrax 250R 2x4 1986-1989
Husaberg
TE 250 2012-2014
TE 300 2012-2014
Husqvarna
CR125 1995-1997
TC 125 2014-2015, 2017-2022
TC 250 2014-2018
TE 125 2014-2016
TE 250 2014-2018
TE 300 2014-2018
TX 300 2017-2018
KTM
125 EGS 1998-1999
125 EXC 1998-2005, 2015
125 SX 1998-2015, 2017-2023
144 SX 2007-2008
150 SX 2009-2015
150 XC 2010-2014
150 XC-W 2017-2019
200 EXC 1998-2005
200 SX 2003-2005
200 XC 2006-2008
200 XC-W 2007-2008
250 EXC 1989-2003
250 MXC 1998-2001
250 SX 1998-2001, 2004-2018
250 XC 2007-2018
250 XC-W 2017-2018
300 DXC 1990-1992
300 EGS 1995-1999
300 EXC 1990-2003, 2015, 2017
300 MX 1990-1991
300 MXC 1994-2003
300 SX 1992
300 XC 2007-2018
300 XC-W 2017-2018
350 EXC 1988-1990
350 MXC 1987
380 EXC 1998-2002
380 MXC 1998-2001
380 SX 1998-2002
440 EXC 1994-1995
440 MXC 1994-1995
500 MXC 1995
550 MXC 1994-1995
65 SX 1998-2025
Kawasaki
KDX200 1989-2006
KDX220R 1997-2005
KX100 1995-1997, 2001-2009, 2011-2021
KX125 1992-2000, 2003-2005
KX250 2-Stroke 1987-2007
KX500 1987-2004
KX65 2000-2026
KX80 1991-1997
KX80 Big Wheel 1991-1994
KX85 2001-2025
Polaris
Scrambler 400 4x4 1995-1996, 1998-2000, 2002
Scrambler 400L 4x4 1997
Sport 400 1999
Sport 400L 1994-1998
Sportsman 350 1993
Sportsman 400 1994-1996, 2001-2004
Trail Boss 350L 2x4 1990-1993
Trail Boss 350L 4x4 1990-1992
Xplorer 400 1995, 1999-2002
Xplorer 400L 1996-1998
Ski-Doo
GSX 800 2004-2007
GSX Sport 600 H.O. 2004-2005
GTX 800 2005-2007
GTX Sport 600 H.O. 2005
Legend 700 2003-2004
Legend 800 2002
MXZ 700 2001-2002
MXZ 800 2002-2003, 2006-2007
MXZ Adrenaline 700 2001-2003
Summit 700 2001
Summit 800 2001-2003
Summit 800R 2007
Summit Adrenaline 600 2003-2005
Summit Adrenaline 800 2003-2006
Summit Adrenaline 800R 2007
Summit Highmark 700 2001
Summit Sport 700 2002
Summit Sport R 700 2002
Suzuki
LT250R QuadRacer 250 1988-1992
RM100 2003
RM125 1992-1993, 1999-2001, 2003-2008
RM250 1990-1995, 1998-2008
RM65 2003-2005
RM80 1994-2001
RM85 2002-2010, 2012, 2015-2021
RM85L 2002-2010, 2012
RMX250 1996-1998
Yamaha
Blaster 2x4 1988-2006
WR250Z 1992-1997
YFZ350 Banshee 1987-2006
YZ125 1989-1992, 1995-2002, 2004-2023
YZ250 2-Stroke 1989-2026
YZ250X 2-Stroke 2016-2026
YZ85 2002-2026
Customer Reviews
Great quality
By Jerry H. on
Verified Purchaser
Great quality, easy to install. Overall great upgrade for my bike.
Easy install
By XYZ on
Easy install and you can instantly tell the difference. Hands down great product. I wish cost was lower, hey you gotta pay to play.
Boyesen RAD Valve
By Larry D. on
Verified Purchaser
Boyesen makes great products.
Awesome
By Lance F. on
Verified Purchaser
Awesome power adder! Great store
Rad Valve
By John S. on
Verified Purchaser
Exactly as described!
Excellent
By Allen M. on
Verified Purchaser
Excellent product.
Boysen Rad Valve
By Tim G. on
Verified Purchaser
Boysen rad valve works to keep throttle more snappy and improved performance on bike. One piece design for easy install. Comes with instructions on how to properly jet. I would recommend and use this product again.
Great to replace your rotted out, old rubber manifold.
By Justin Q. on
Verified Purchaser
Amazing build quality and definitely is adding some throttle response and low end. My bike comes on sooner and harder with this, without giving up anything up top.
Very good
By Justin Q. on
Verified Purchaser
As I expected it added a bit more throttle response, nothing crazy but it comes on earlier and harder. I really wanted it for the build quality and only needing one gasket vs the stock reed setup. Definitely overpriced but a great product.
RAD Valve
By Barry M. on
Verified Purchaser
Parts are awesome.
Definitely Rad!
By Eric L. on
The Rad Valve lives up to what it says. Personally, I'd be careful though and wouldn't try much leaner on the mains like Boyesen instructs. I jumped a few richer & could even go up more.
How many stars would you give this product? Write a review.
Questions & Answers
Will this kit also replace the carb boot on a 91 kdx 200?
By Anon.
The components you see in the photo after you select the 1991 KDX200 RAD valve from our fit guide, are all the parts that are included with the kit for that bike. You will receive the boot that fits between the carburetor and the new valve.
Does the boot come with? Is that just a circle or is it using like a stock style intake boot?
By Moto11
Without knowing what machine you have, I can't say for sure. Most RAD valves re-use the OEM intake boot. You only need to remove the old reed valve assembly and put the Boyesen part in its place. So long as you have all of the stock intake components on your machine, you won't have any problem fitting it to your bike. It's a really simple installation.
I wanted to confirm that for a (2005 CR250R 2-stroke) it's the whole intake assemble as shown in the pictures?
By Anon.
That's correct - you'll receive the entire valve assembly with your order. Everything that's shown in the picture comes in the kit: valve housing, reeds, gaskets, carburetor boot and hardware. And yes, these Honda CR250R reed valves are awesome!
Will this rad valve fit a 93 YZ250
By Jski
Yes, there is a RAD valve offered for that 1993 Yamaha YZ250. Just be sure to select that year/make/model before adding to your cart.
Does this come with reeds as well
By Anon.
Yes, the reeds are included with the RAD Valve.
Will this fit a 89 yz 125
By Anon.
Yes, you can choose that 1989 Yamaha YZ125 when adding to your cart for this RAD valve to make sure you get the correct part.
does this fit 1999 yz250
By Anon.
Yes, that is one of the models you can choose from the drop down for this RAD Valve.
When purchasing for a banshee, is the price for a pair?
By Mike
Does price include both sides
Yes, you would receive two RAD valves with your purchase if you were to order this kit for a Banshee.
Does this come with reeds or do I have to buy reeds separate?
By Dalton M
Yes, the reeds are indeed included with each Boyesen Rad valve. You need not purchase those separately. Everything you need to fit this to any machine you see in out fit guide is included in the box.
What the intake size for the carb side? For a 2006 Yamaha blaster
By Anon.
Boyesen Rad valves are designed to fit the OEM carburetor. That is to say, the intake size as the same size as the OEM unit on your Yamaha Blaster.
is the intake boot included on the kx 500 rad valve?
By G
Yes, the intake boot is included with every Boyesen Rad Valve kit. You also get the boot clamp and gasket to go with it. It'll bolt straight to the OEM carburetor of any machine we have listed in our fit guide without issue, guaranteed!
Have a question? Please ask our experts and customers who own this product.
Verified Purchaser
