Custom Installations installs more K40 radar systems than any one else in the United States. We are proud to be a premier partner again in 2021.

K40 is sold exclusively through K40-certified dealers.
ONLY purchase genuine K40 products from Authorized K40 Dealers.
Simply put, the K40 RL360di and Laser Defuser Optix are the most advanced radar detection and laser protection systems available today, and they're completely customized for your automobile and the way you drive.
K40 Electronics – We Fix Speeding Tickets.K40 has been the leader in radar and laser detection technology since 1981.
ONLY purchase genuine K40 products from Authorized K40 Dealers.
Simply put, the K40 RL360di and Laser Defuser Optix are the most advanced radar detection and laser protection systems available today, and they're completely customized for your automobile and the way you drive.
K40 Electronics – We Fix Speeding Tickets.K40 has been the leader in radar and laser detection technology since 1981.
- The first remote installed radar detector in 1981.
- The first Speeding Ticket Guarantee in 1982.
- The first radar and laser protection systems with Quiet Ride.
- The first custom-installed radar detector that has both front and rear radar receivers, the RL360di. The dual receiver configuration provides directional awareness and increased range to keep you protected from radar threats at every angle.
K40's Exclusive Guarantees If you get a speeding ticket, K40 will pay for it.*K40 was the first radar detector manufacturer in the world to offer a speeding ticket guarantee. Thirty years later, they are still the company with the confidence to back all of their products with this guarantee: all radar and laser speeding tickets are covered in full, no questions asked, for one full year from the date of purchase.* Simply send K40 a copy of the speeding ticket, your proof of payment of the ticket, and your receipt for your K40 product purchase. It's that easy. This guarantee covers actual speeding ticket fines and court costs. This guarantee does not cover attorney's fees.
K40 is now offering a Speeding Ticket Guarantee Extension. If you are within the first year of ownership of your K40 Radar Detector or Laser Defuser, you can purchase a 2-year extension for only $149.00.
800.323.5608
K40 guarantees your satisfaction, 100% K40 continues to offer the best guarantees 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 comprehensive speeding ticket guarantee, all K40 radar and laser protection products are covered by the following:
Register to Ensure You’re Covered
K40 is now offering a Speeding Ticket Guarantee Extension. If you are within the first year of ownership of your K40 Radar Detector or Laser Defuser, you can purchase a 2-year extension for only $149.00.
800.323.5608
K40 guarantees your satisfaction, 100% K40 continues to offer the best guarantees 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 comprehensive speeding ticket guarantee, all K40 radar and laser protection products are covered by the following:
- 100% Performance Guarantee
- 100% One-Year Quality Guarantee - K40 will repair or replace any defective product
for one full year from date of purchase- (shipping and labor charges additional) - 100% Lifetime Theft Guarantee - (Excludes portable radar detectors) - If your remote installed radar detection system is ever stolen, K40 will replace it at no charge. Lifetime guarantee for the original purchaser of the system.** Labor, shipping are additional.
Register to Ensure You’re Covered