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2012-16 KTM 350 EXC/ 14-16 Husqvarna FE350 S Block off/ Delete kit & Breather Hose Relocation for Racing


Manufacturer: Blais Racing

Product Information

Introducing the Blais Racing Services DeSmog/Emissions Block Off/Delete Kit & Breather Hose Relocation for the 2012-2016 KTM 350 EXC/EXC-F and 2014-2016 Husqvarna FE350 S.


This kit provides a quick and efficient solution to optimize your bike's performance by removing emissions canisters, just like we do on the Factory KTM race bikes.


Key Features:

  • OEM Quality Components: The kit includes high-quality pre-bent hoses, a carb plug with a sealing washer, cylinder head plug, air-boot plug, and zip ties.

  • Racing Conversion: Designed for racing enthusiasts, this kit allows you to eliminate unnecessary emissions components for improved performance.

Installation Steps:

  1. Cylinder Head Modification: Remove the small hose and fitting from the cylinder head. Replace it with a small bolt secured with Loctite.

  2. Exhaust/Smog Valve: Remove the large hose from the exhaust/smog valve. This requires removing the rear muffler and the header from the bike. The header can be pulled off the exhaust manifold for easier access.

  3. SAS Valve Removal: Use a #3 Phillips screwdriver to remove the two bolts holding the SAS valve. This step may require moving the SAS valve slightly for better access.

  4. Detailed Instructions: The kit comes with extremely detailed instructions and photos for a hassle-free installation.


Shipping Information:

This kit is shipped via Priority USPS if ordered separately. If combined with other items, it will be shipped by UPS.


Always in Stock!

Upgrade your bike's performance and streamline it for racing with the Blais Racing Services DeSmog/Emissions Block Off/Delete Kit & Breather Hose Relocation. For 2017 Block Off Kits, click here.

Note: Ensure proper fitment for your bike model. Contact us for any additional information or assistance.

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!
This kit keeps oil deposits out of your throttle body and keeps your bike running better for longer.  This kit will eliminate the popping on deceleration.

Explore our range of performance-enhancing accessories:


  • JD Jetting FI Tuner: Elevate your KTM 350EXC's performance with this tuner, delivering a night-and-day difference over stock settings. Unleash the full potential of your bike with the added fuel it deserves.

  • Blais Racing 7 Ounce Clutch/Flywheel Weight: Fine-tune your KTM or Husqvarna with this stainless steel clutch weight, optimizing traction, and providing a smoother power curve. Easy installation for a noticeable upgrade.

  • Golan 10 Micron Super Mini Fuel Filter Kit: Ensure clean fuel delivery with this high-performance fuel filter kit. Designed for precision and efficiency, it keeps your engine running smoothly.

  • Motion Pro ForkTru Fork Alignment Tool: Achieve precise fork alignment with this Motion Pro tool. Essential for maintaining optimal handling and stability.

  • Samco Sport Radiator Hose Kit: Upgrade your bike's cooling system with Samco Sport's hose kit. Eliminate the thermostat for improved temperature regulation.

  • FMF Exhausts: Explore our selection of FMF exhaust systems to enhance your bike's power and sound. Choose from a variety of options for the perfect fit.

  • KTM 350 EXC Eline Carbon Fiber Skid Plate: Protect your bike with the lightweight yet durable Eline Carbon Fiber Skid Plate. Engineered for off-road durability.

  • Bullet Proof Designs Billet Radiator Guards: Safeguard your radiators from damage with these billet guards. Robust protection without compromising airflow.

  • DirtTricks KTM Switch Operated Cooling Fan Kit: Keep your engine cool with this switch-operated cooling fan kit from DirtTricks. Ideal for challenging riding conditions.

  • BRP Chain Guide: Upgrade your chain guide with BRP for enhanced durability and reliability. Ride with confidence knowing your chain is well-guided.


Enhance your riding experience and explore these quality accessories designed for KTM and Husqvarna motorcycles.

Product Code: KTM350BlockOff


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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