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2020-23 KTM 450/500 EXC-F/XCF-W/ SIX DAYS/ 2020-23 Husqvarna FE450/FE501/501S Emissions/ Smog Block off/ Delete Kit & Breather Hose Relocation for Racing


Manufacturer: Blais Racing

Product Information

Blais Racing Services 2020-23 KTM 450/500 EXC-F/XCF-W/ SIX DAYS & 2020-23 Husqvarna FE450/FE501/501S Emissions/ Smog Block off/ Delete Kit & Breather Hose Relocation with Instructions for Racing Conversion

These kits will allow you to remove everything including the lower canister valve.  If this electrical connector is unplugged it normally gives a FI light.  With our new dongle plug included in the kit, this will no longer give an FI light.  Check out our JD tuners or Vortex ECU's and AIM ECU's to get your bike running like it's supposed to. 

These kits only come with a Black breather hose.

This is a quick and easy way to desmog your 2020-23 KTM 450/500 EXC-F/XCF-W and 2020-23 Husqvarna FE450/FE501/501S. Keep your bike running better and remove all of those emissions hoses and charcoal canister.   Also includes valve cover breather hose relocation instructions. This is the same stuff we use on the Factory KTM race bikes.  Our kit includes Qty 1 small 6mm plug, 1 Dongle plug, 1 High-Quality Black Silicone Breather Hose/ Cap & Zip Ties to reroute the engine breather hose along with 6 pages of photos and detailed instructions.  It's a pretty easy install for anyone with basic hand tools and some time. 

This modification is 100% for Closed Course Competition Use only. Not Intended for Street Use!  Does not conform to CARB/ EPA laws and regulations and is not legal for use on a highway.I understand that it is illegal to install an aftermarket part that is intended for use with, or as part of, a required motor vehicle pollution control device or system that alters or modifies the original design or performance of the motor vehicle pollution control device or system unless the part has an Executive Order from CARB. Installation of these types of parts which are not CARB‐approved on a pollution-controlled motor vehicle in the state of California may result in the Department of Motor Vehicles (DMV) revoking the vehicle registration and certification of ownership (title), refusing the transfer of registration, and/or the vehicle failing smog inspection. It is illegal to operate a vehicle in California with an illegal aftermarket part. Law enforcement may cite you for the use of an illegal aftermarket part and seize your title and license plate. By ordering this product you agree to these terms.  You agree that Blais Racing Services only sells racing parts and parts for converting your bike into a closed course competition-only vehicle and will not use Upon a Highway!

Always in stock!

These ship by USPS Priority Mail unless ordered with other items which will go UPS ground.  Please supply a USPS shipping address in the order notes.

For all our 2020-23 KTM products click here!   For all our 2020-23 Husqvarna products click here!

AIM 5 MAP ECU FOR 2020-23 KTM 350/500 EXC-F/ XCF-W, 2020-23 HUSQVARNA FE350/350S/FE501/ 501S


Blais Racing KTM and Husqvarna 7 Ounce Clutch/ Flywheel Weight

FMF4.1 RCT Slip on exhausts for 2020-22 KTM and Husqvarna's

2020-23 KTM 500 EXC-F/XCF-W, Husky FE450/501/501S Samco Sport Hose Kit (Eliminates Thermostat)

2020-23 KTM 350 EXC-F/XCF-W, Husky FE350/350S Samco Sport Hose Kit (Eliminates Thermostat)

ECU Re-Programming

2020-23 KTM 500 EXC-F/XCF-W/ Husqvarna FE 501/501S JD Jetting FI Tuner

Golan Super Mini 10 micron Fuel Filter Kit

Bullet Proof Designs Billet Radiator Guards

BRP Chain Guide

Product Code: 20KTM500BLOCKOFF1

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California Cancer and Reproductive Harm WarningWarning: cancer and Reproductive Harm -

These warnings are not an indication that these products are violating any safety standards or regulations.

However, as our products might be sold in the state of California, we are legally obliged to inform customers about the potential presence of these chemicals in our products.


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