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Competition Only Ultimate Conversion kit for 2017-2019 KTM 250/350/450/500 EXC & 2017-2019 HUSQVARNA FE 250/350/450/501 MODELS

$1,599.95 $1,549.95

5.0 average, based on 5 reviews

Manufacturer: Blais Racing

Product Information

Closed Course Competition Ultimate Performance Conversion kit for 2017-2019 KTM 250/350/450/500 EXC & 2017-2019 HUSQVARNA FE 250/350/450/501 MODELS with Vortex ECU

Turn your KTM/ Husqvarna Dual Sport bike into a Fire Breathing Beast for Racing! 30% more power over your stock bike!  This Kit contains an FMF Slip on Exhaust, Smog Block Off Kit, Vortex X10 ECU, and Samco Thermostat Eliminator Hose and Clamp Kit.  This is everything you need to convert your 2017-2019 KTM 250/350/450/500 EXC & 2017-2019 HUSQVARNA FE 250/350/450/501 into an offroad racing machine.  Purchase as a complete kit and save. 

Also Check out theSicass RacingOver/ Under kill switch. 

You can select our open airbox boot without the reeds when ordering your kit.  This is a cleaner setup than just removing the reed cage restrictor.

Vortex ECU Key Features:

  • Pre Programmed with 10 Performance Fuel & Ignition maps - all the work is done for you!
  • Instant Plug in Performance (replaces standard ECU with no mods to wiring required)
  • Fuel Trim Switches adjust fuel mapping by +12.5% to -10% in Lo, Mid and Hi throttle bands
  • Adjustments require only a screwdriver and integrated switches provide visual feedback.
  • Simple to install with mounting hardware supplied (where required)
  • V-Boost - Programmable Voltage Boost Circuit for maximising Spark Energy across the entire rev range
  • Higher / Lower Rev Limit (where required)
  • Robust design is fully encapsulated and O-ring sealed
  • Diagnostic Flash codes - tests for sensor faults and flashes codes to OEM FI light
  • Race Proven reliability  
  • Re Programmable (Software and Interface hardware not Included)

All Vortex products are factory programmed with Performance Fuel and Ignition Maps developed through extensive dyno and track testing by Vortex Ignitions engineers with our network of race teams worldwide.

Samco Hose Kit Key Features:

This is a high performance product which replaces your standard factory rubber hoses to a high quality Samco Sport silicone hose kit.

Thermostat Bypass hose kits remove the factory fitted thermostat from the cooling system, allowing better coolant flow and lower engine running temperatures.

Handmade in the UK and comes with a Lifetime Warranty ensuring you have the highest quality cooling products fitted to your motorcycle.

Samco Hose clamps will be included also.

If you select a KTM model the hoses will come in orange, if you select a Husqvarna model hoses will be Blue!

Block Off Kit Key Features:

This is a quick and easy way to desmog your 2017-2018 KTM 250/350/450/500 EXC and Husqvarna FE 250/350/450/501. 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 competition only vehicle and will not use Upon a Highway!

Check out ourKTM/ Husqvarna Block Off Kits!

Vortex Map Switch Only for X10 KTM/ Husqvarna ECU's

Blais Racing KTM and Husqvarna 7 Ounce Clutch/ Flywheel Weight

FMF 4.1 Slip on Exhaust for 2017-19 KTM & Husqvarna's in stock!

Promoto Billet Stock Exhaust End Capfor those who want to keep the stock exhaust but want more flow!

Golan Super Mini Fuel Filter Kits

2016-2019 Bullet Proof Design Radiator Guards

2012-2019 Bullet Proof Designs Linkage Guard

2017-19 KTM 450/ 500 EXC-F & Husqvarna FE450/ 501 3 Piece Thermostat Bypass Samco Sport Silicone Hose Kit

Samco Sport Hose Kit for 2017-19 KTM 250/350 EXC-F/XC-W/SX-F/XC-F & 17 -19 HUSQVARNA FC/FE 250/350 Thermostat bypass

Product Code: VONPGKI15

Customer Reviews

Average Rating: 5


It’s been quite a while since I ordered the FMF slip on / emissions delete for my 2017 350 EXC from you, but I wanted to give you an update. Following your suggestions and using most all your products (excepting the Vortex – I got that from someone prior to discovering you) I’ve converted my bike to a race bike and I have to tell you – It freaking rips compared to stock. It seems to maintain the low end torque – possibly a bit more, but once it gets into the midrange, boy does it pull. (Yes, it took this long to finally get a ride on it – don’t ask. Ha ha) Thank you for your advice on this bike over the past year. I appreciate the fact that you take the time to answer questions that come your way, unlike some of the competition out there.

Christopher Blais :: 21 May 2019, 19:21

Thank You!

Hi Chris and everyone at Blais Racing, I just wanted to thank you again for all your help with my 2019 Husqvarna FE 350. Thanks to you and the products you sell I was able to transform my bike into something special. I am really happy with the way the bike turned out. Everything went together really well and the bike runs great.

TIM GRADY :: 28 Feb 2019, 23:43


I wanted to let you know I got everything up and running and WOW, is this bike fast. Pulls super hard with my FMF pipe, smog/reed Delete. I'm not sure if you sent the ECU with your special recipe but there no way anyone can tell me Vortex only makes a slight change.

JAMES BIRO :: 13 Jul 2018, 19:44


Bought this kit a week ago and installed it. Easy install. Amazing power increase! Doesn't even seem like the same bike, this kit is crucial to make the 500exc run the way it should. Thanks Chris for all the help.. my bike thanks you too

Cody Wise :: 16 Feb 2018, 03:22

Recommend this kit!

Installed this kit on my 2018 501 fe, Wow the bike is awsome tons of power no stalling or lean popping on deceleration. Shipping was quick...really quick! Thanks Blais Racing John Sides

john sides :: 29 Jan 2018, 01:45

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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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