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2012-16 KTM 450/500 EXC/ 14-16 Husqvarna FE450/501 S Block off/ Delete Kit & Breather Hose Relocation for Racing


5.0 average, based on 4 reviews

Manufacturer: Blais Racing

Product Information

Blais Racing Services 2012-2016 KTM 450/500 EXC & 14-16 Husqvarna 450/501 S Emissions Block off/ Delete Kit & Breather Hose Relocation with Instructions for Racing

Choose Hose Color in the Options during Checkout!

For 2017 Block off kits Click Here!

This is a quick and easy way to desmog your KTM 450/500 EXC, keep you bike running better and remove all of those emissions canisters for racing.   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 Orange 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.

Buy this Kit with the JD Jetting Fuel Injection Tuner for the ultimate ride.  This tuner is required for any intake or exhaust modifications and works awesome with the stock exhaust and screw in tip removed.  The screw in exhaust tip is not your spark arrestor, its built in the exhaust.   This is night and say difference over stock. 

Blais Racing KTM and Husqvarna 7 Ounce Clutch/ Flywheel Weight

KTM 500 EXC Samco Sport Hose Kit (Eliminates Thermostat)

Golan Super Mini 10 micron Fuel Filter Kit

KTM Thermostat Eliminator Washer

Motion Pro ForkTru- Fork Alignment Tool

JD Jetting EFI Ignition Map Switch

KTM 500 EXC Eline Carbon Fiber Skid Plate

KTM 500 EXC Eline Carbon Fiber Pipe Guard

Shorai 1lb Lithium Battery

Bullet Proof Designs Billet Radiator Guards

DirtTricks KTM Switch Operated Cooling Fan Kit

BRP Chain Guide

Product Code: KTM500BlockOff

Customer Reviews

Average Rating: 5


Best bang for the $. Got the FI programmer also with block off kit. Feels like a new bike

Shepard :: 10 May 2013, 00:13


Quick and easy. No more backfiring!

Jack Mainly :: 10 May 2013, 00:10

block off kit

Very easy to install and get rid of all the power stifling smog crap.

Richard :: 7 Aug 2012, 22:51


love it thank you more power better throttle responce and best of all no more backfiring poping

Anonymous :: 10 Jan 2012, 00:06

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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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