Boyesen RAD ValveBoyesen RAD Valve for Honda CR250R 1986-1998
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
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)
Country of Origin
USA
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.
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.
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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.
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!
Verified Purchaser