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Boyesen RAD Valve

(10 reviews)

Item: 327825

$141.73 – $262.13

Select Your Vehicle - Fitment Guaranteed

Boyesen RAD Valve


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
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 1986-2000, 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 2014-2019
  • TC 85 2014-2017
  • TE 125 2014-2016
  • TE 250 2014-2018
  • TE 300 2014-2018
  • TX 300 2017-2019
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
  • 250 EXC 1998-2003
  • 250 MXC 1998-2001
  • 250 SX 1998-2001, 2004-2019
  • 250 XC 2007-2019
  • 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 2007-2019
  • 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 1998-2023
  • 85 SX 2009-2017
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 2000-2025
  • 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
  • WR250Z 1992-1997
  • YFS200 Blaster 1988-2006
  • YFZ350 Banshee 1987-2006
  • YZ125 1989-1992, 1995-2002, 2004-2023
  • YZ250 2-Stroke 1989-2025
  • YZ250X 2-Stroke 2016-2025
  • YZ85 2002-2025

Customer Reviews

Write Review

Easy install

By   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   on  Verified Purchaser

Boyesen makes great products.


Awesome

By   on  Verified Purchaser

Awesome power adder! Great store


Rad Valve

By   on  Verified Purchaser

Exactly as described!


Excellent

By   on  Verified Purchaser

Excellent product.


Boysen Rad Valve

By   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   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   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   on  Verified Purchaser

Parts are awesome.


Definitely Rad!

By   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.

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Questions & Answers

Ask Question

Does the boot come with? Is that just a circle or is it using like a stock style intake boot?

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.

By Tom
Answer Question

I wanted to confirm that for a (2005 CR250R 2-stroke) it's the whole intake assemble as shown in the pictures?

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!

By Tom
Answer Question

Will this rad valve fit a 93 YZ250

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.

By Andy
Answer Question

Does this come with reeds as well

Yes, the reeds are included with the RAD Valve.

By Andy
Answer Question

Will this fit a 89 yz 125

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.

By Andy
Answer Question

does this fit 1999 yz250

Yes, that is one of the models you can choose from the drop down for this RAD Valve.

By Andy
Answer Question

When purchasing for a banshee, is the price for a pair?

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.

By Staff
Answer Question

Does this come with reeds or do I have to buy reeds separate?

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.

By Staff
Answer Question

What the intake size for the carb side? For a 2006 Yamaha blaster

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.

By Staff
Answer Question

is the intake boot included on the kx 500 rad valve?

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!

By Staff
Answer Question

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