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2017-2019 KTM 450/500 EXC/ SIX DAYS/ 2017-2019 Husqvarna FE450/501 Block off/ Delete Kit & Breather Hose Relocation for Racing


Manufacturer: Blais Racing

Product Information

Blais Racing Services 2017-19 KTM 450/500 EXC/ SIX DAYS & 2017-19 Husqvarna FE450/ 501 Emissions/ Smog Block off/ Delete Kit & Breather Hose Relocation with Instructions for Racing Conversion

These kits will allow you to remove everything but the lower canister valve.  If you have a Vortex ECU you can remove the lower canister valve without any FI light.   If you are running the stock ECU or a JD tuner you will also need our Dongle plug if you would like to remove the canister Valve without having a FI Light.   Also Check out our JD tuners or Vortex ECU'sto get your bike running like its supposed to.

For 2020 KTM/ Husqvarna parts Click Here!

These kits only come with Black breather hose.

This is a quick and easy way to desmog your 2017-19 KTM 450/500 EXC and 2017-2019 Husqvarna FE 450/ 501. Keep you bike running better and remove all of those emissions hoses and 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 7075 Aluminum Cylinder head plug, 1 small plug, and 1 sealing washer to block off smog items, 1 High Quality Black Silicone Breather Hose/ Plug/ Zip Ties to reroute 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 upon 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.


Blais Racing KTM and Husqvarna 7 Ounce Clutch/ Flywheel Weight

FMF4.1 RCT Slip on exhausts for 2017-19 KTM and Husqvarna's

2017-19 KTM 450/500 EXC Samco Sport Hose Kit (Eliminates Thermostat)

ECU Re-Programming

2017-19 KTM 450/500 EXC/XCW & 2017-19 HUSQVARNA FE501/501S/450 SKID PLATE

2017-19 KTM 500 EXC/ Husqvarna FE 501 JD Jetting FI Tuner

Golan Super Mini 10 micron Fuel Filter Kit

Motion Pro ForkTru- Fork Alignment Tool

Shorai 1lb Lithium Battery

Bullet Proof Designs Billet Radiator Guards

BRP Chain Guide

Product Code: 17KTM500BLOCKOFF


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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