K40’s Exclusive RL Series Guarantees: If you get a speeding ticket, we’ll pay for it.*
K40 was the first – and only – radar detector manufacturer in the world to offer a speeding ticket guarantee: All speeding tickets are covered in full, no questions asked, for one full year from the date of purchase.
K40 guarantees your satisfaction, 100%. K40 continues to offer the best guarantee in the industry, as it has since 1981. It’s a confidence that comes from three decades of designing the very best automotive radar and laser protection systems in the world.
Along with the industry’s only speeding ticket guarantee, your K40 guarantee also includes:
- 100% performance guarantee – If your K40 RL Series radar detector does not outperform any other radar detector you’ve owned, return it within 30 days for a full product credit.
- 100% one-year quality guarantee – K40 will repair or replace any defective RL series radar detector for one full year from date of purchase.
- 100% theft guarantee – If your K40 RL series radar detector is ever stolen, we’ll replace it.
Register to Ensure You’re Covered - To ensure you’re covered by all K40 guarantees, register your product today.
IMPORTANT NOTICE: The purchase of any K40 product from eBay or other online auction site forfeits all manufacturer's warranties.
* Speeding ticket guarantee not valid for tickets written in school or construction zones, or incurred with a DUI violation.
"The K40 units installed in my cars are just what the doctor ordered to maintain situational awareness on city, country and highway roads. Considering the amount of miles I've driven in the One Lap of America, to and from road courses for HPDE's, K40 has kept me ticket free over the years. I am more than pleased with your products, technical support and most important, your customer service"
--Rudy A --Chicago/Florida
Currently owns 8 vehicles with complete K40 radar/laser systems
“I have your product on my BMW, and love it. It allows me to drive the car the way it was made to be driven. I spend less time looking for speed traps and roof lights, and more time with my eyes on the road."
--Tom W., Fresno, CA
"Dear K40 -
I was test driving a Porsche at MotorWerks in Barrington, IL yesterday, and when discussing pricing for the vehicle, I inquired about a K40 system. They handed me a brochure on your new RL Series, which sounds great. The part of the brochure that made me laugh was the testimonial form the guy on his "Third K40".
I purchased my FIRST K40 when in high school for my Olds Cutlass Supreme. It took me months to save up the money. Ever since then, I have put K40's in all the vehicles I purchased as well as my work trucks.
1. Cutlass Supreme
2. Merkur XRI
4. Cougar (1st totaled in accident)
5. Ford Expedition (work truck, mobile veterinarian)
6. Jeep Cherokee (ex-wife's work truck)
7. Dodge Ram 350 (ex-wife's new work truck)
8. Ford Expedition (2000 new work truck)
9. Cadillac Deville
10. Lexus 470
11. BMW 530 (fiance's)
12. Ford Expedition EL (2010 new work truck)
So, the RL360 will be my 13th K40 system purchased. Not bad for a regular consumer. Just wondering when you will have a frequent customer discount card? Thanks for keeping us safe."
John J. Hanover, DVM, Cary, IL
This system works awesome. Had a Valentine before, and it looks so much better, and works better too.
N.T. Colorado Springs
This is my second K40 radar detector. The first one I purchased in 2001 saved me from a ticket the very first day. I thought it was defective because it alerted me 4 miles before I saw a state patrol. This convinced me how well this product works! It has saved me countless tickets since then. Thanks for making a superior product.
-- Patrick Dowling