Cobra Carburetor Jet Kit

Item Number: 326138

5 stars 3 Reviews

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Product Description


Cobra Carburetor Jet Kit

Lean jetting leads to long warm up times, surging, and balky throttle response.

  • Carburetor recalibration kits tuned specifically for cruisers using Cobra Boulevard exhaust and stock or aftermarket air filter
  • Provide improved throttle response and pulling power throughout the rpm band
  • All necessary performance components and step-by-step instructions are included for each model
  • Made in the USA

Spec Details
Country of Origin USA

Vehicle Fitment

Fitment is guaranteed or your money back plus free return shipping. Don't waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.


  • GL1500C Valkyrie 1997-2003
  • GL1500CD Valkyrie Deluxe 2001-2003
  • GL1500CF Valkyrie Interstate 1999-2001
  • GL1500CT Valkyrie Tourer 1998-2000
  • VF750C V45 Magna 1994-2003
  • VT600C Shadow 600 VLX 1994-2007
  • VT600CD2 Shadow 600 VLX Deluxe 1999-2000
  • VT600CD Shadow 600 VLX Deluxe 1994-2007
  • VT750C2 Shadow 750 Spirit 2007-2009
  • VT750C Shadow 750 A.C.E. 1998-2001
  • VT750C Shadow 750 Aero 2004-2009
  • VT750CA Shadow 750 Aero ABS 2004-2009
  • VT750CD2 Shadow 750 A.C.E. Deluxe 1998-2002
  • VT750CD Shadow 750 A.C.E. 1998-2003
  • VT750DC Shadow 750 Spirit 2001-2003, 2005-2007
  • VT1100C2 Shadow 1100 A.C.E. 1997-1999
  • VT1100C2 Shadow 1100 Sabre 2000-2007
  • VT1100C3 Shadow 1100 Aero 1998-2002
  • VT1100C Shadow 1100 1987-1996
  • VT1100C Shadow 1100 Spirit 1998-2007
  • VT1100CS Shadow 1100 A.C.E. 1998
  • VT1100D2 Shadow 1100 A.C.E. 1999
  • VTX1300C 2004-2009
  • VTX1300R 2005-2009
  • VTX1300S 2003-2007
  • VTX1300T 2008-2009


  • VN800A Vulcan 800 1995-2005
  • VN800B Vulcan 800 Classic 1996-2005
  • VN1500A Vulcan 88 1991-1995
  • VN1500A Vulcan 1500 1996-1999
  • VN1500C Vulcan 1500 L 1996-1997
  • VN1500D Vulcan 1500 Classic 1996-1997
  • VN1500E Vulcan 1500 Classic 1998-2004
  • VN1500G Vulcan 1500 Nomad 1999-2001


  • VL800 Volusia 800 2001-2004
  • VL1500 Intruder 1500 1998-2004
  • VS800GL Intruder 800 1992-2004
  • VS1400GLF Intruder 1400 1987-2004
  • VS1400GLP Intruder 1400 1988-2001
  • VZ800 Marauder 800 1997-2004


  • VMX1200 VMAX 1985-1986, 1988-2007
  • XV535 Virago 535 1987-1988, 1990, 1993-1999
  • XV1100 Virago 1100 1986-1999
  • XV1600A Road Star 1600 1999-2003
  • XV1600AL Road Star 1600 Limited Edition 2003
  • XV1600AS Road Star 1600 MM 1999-2000
  • XV1600AS Road Star 1600 Midnight Star 2001-2003
  • XV1600AT Road Star 1600 Silverado 1999-2003
  • XV1700A Road Star 1700 2004-2007
  • XV1700AM Road Star 1700 Midnight 2004-2007
  • XV1700AT Road Star 1700 Silverado 2004-2007
  • XV1700ATM Road Star 1700 Midnight Silverado 2004-2007
  • XVS650 V-Star 650 Custom 1998-2011, 2013-2016
  • XVS650A V-Star 650 Classic 1998-2010
  • XVS1100 V-Star 1100 Custom 2000-2009
  • XVS1100 V-Star 1100 Midnight Custom 2005-2009
  • XVS1100A V-Star 1100 Classic 2000-2009
  • XVS1100AT V-Star 1100 Silverado 2003-2009
  • XVS1100L V-Star 1100 1999
  • XVZ1300A Royal Star 1996-1998

Customer Reviews

Smooth and strong

out of 5
5 stars

By on August 11, 2016

Absolute breeze to install. Set to supplied specifications. Notable improvements on the top end and response. Very smooth overall. Great purchase!

5 stars
5 stars

Cobra Carb Jet Kit

out of 5
5 stars

By on November 8, 2016

This kit is awesome.

5 stars
5 stars

Perfect pair

out of 5
5 stars

By on February 15, 2017

This was just the kit I needed to go with my Cobra pipes. Easy to install and makes for a much better running bike.

5 stars
5 stars

Questions & Answers

  • Is this kit for both carbs?

    By: jerry

    Cobra jet kits come with everything you need to service all the OEM carburetors on your machine. If your machine comes equipped with two carburetors, then yes - Cobra's carburetor jet kits have enough components in them to service two carburetors. Everything you need is in one box so you only need to buy one kit to tune your bike!

    By: Staff

  • For a 2004 Suzuki Intruder 1400 using a Cobra slip-on exhaust with stock air filters and headers, what parts come with the cobra jet kit and what is needed for my application?

    By: Mike

    Each kit for the 2004 Suzuki Intruder 1400 includes:

    2 fuel needles

    2 E-clips

    2 adjusting washers

    1 slide drill

    1 plug drill

    1 screw

    Of those components, for your particular setup, you'll need to drill the slide lift hold in each carburetor with the included 7/64" slide drill. After that's done, install the needles that come with the Cobra jet kit and insert the E-clip into the third grove from the top. If you're running an exhaust without baffles, put the E-clip into the second slot from the top.

    After that, use the included 5/32" plug drill to drill through the fuel mixture plugs. Just be careful not to drill through the mixture screw once you've gotten through each fuel mixture plug. With that plug out of the way, adjust the mixture screw until it's out 2-1/2 turns from full-in.

    You'll find that, once you've completed this work as directed, your bike will run a lot better, especially at cruising speeds or whenever you grab a handful of throttle. Any surging will go away and the engine will respond to your commands much more readily.

    By: Staff

  • I have a 04 yamaha vstar 1100 it have a 2 into 1 header exhaust and cone air filters

    It spits and sputter like its runnin out of fuel at about half throttle and it wont go over 60 mph and it starts coffing wondering if the jet kit will fix it

    By: Guest

    In your particular case, that sounds exactly like a fueling issue. A jet kit would almost certainly improve, if not totally solve the sputtering and poor running conditions you're having.

    By: Staff

  • 1999 vulcan

    By: Guest

    We have Cobra Carburetor Jet Kits available to fit most 1999 Kawasaki Vulcan models include the VN800 and VN1500.

    By: Staff

  • 99 honda valkyrie. Does it come for all 6 carbs?

    By: Jcdtruckn

    Yes, every Cobra jet kit for the Honda Valkyrie comes with enough parts to service all six carburetors on that machine. The includes Valkyrie jet kit instructions also do an excellent job of explaining not only how to install the everything, but also how to set it up for your bike's specific needs. It is an excellent Valkyrie jet kit!

    By: Staff

  • My 99 vstar 650 bogs down and sputters at 50-70mph. Will a jet kit fix this? I don't know what size jets I need

    By: Guest

    Cobra's V-Star 650 jet kit is designed for motorcycle running an aftermarket exhaust of some kind and either the stock, or an aftermarket air intake. Depending on what's causing your running issue, this jet kit may not be your answer. If the engine is bogging at wide open throttle, that usually means the engine is starving for fuel and may be too lean. If you are at those speeds, you may have a float height issue in your carb. If you have recently made changes such as an exhaust or new intake, you would need to tune your carburetor to match the new flow rate. Then this jet kit should help you out. If you can recreate that issue at low speeds under heavy load, say 5th gear, 25 mph, wide open throttle, you likely have an ignition issue.

    By: Staff

  • in this kit, what size are the jets for xv1100?

    By: jet size

    Cobra's jet kit for Yamaha's V-Star 1100 comes with main jets ranging in size from 104 to 112. The kit also comes with springs, adjusting washers, fuel needs and a set of instructions to show you exactly how to get your bike set up for the best possible throttle response and engine power output.

    By: Staff

  • Is this kit for 1 or both carbs? S-83

    By: Ray

    The S83 jet kit comes with enough parts to service both carburetors on that machine. You only need to purchase one jet kit to properly adjust fueling on your bike.

    By: Staff

  • Is this the kit i would need if installing the cobra classic slashcut exhaust system on my 2002 honda shadow ACE?

    By: Matt

    For 2002 Shadow 750 ACE Honda jet kit, yes - this kit is a perfect match for that, or any other Cobra exhaust you could find to fit that bike. The instructions that are included do an excellent job of explaining how to get the kit installed as well. An evening in the garage and you should be all set!

    By: Staff

  • Will it work on a Honda Shadow vt750c?

    By: Guest

    Yes, we have a Cobra jet kit that'll fit a 1998 through 2001 model year Honda VT750C Shadow 750 A.C.E. and the 2004-2009 Honda VT750C Shadow 750 Aero. Just choose your machine from our fit guide and we'll get the proper jet kit on its way to you, we guarantee it!

    By: Staff

  • What size main jets are in this kit? I have a 2002 V star 650. I drilled out the exhaust baffels and was told a 160 to 170 main jet will fix my "popping" and running lean problem.

    By: Foofees

    The popping that you're dealing with is more likely the result of air inversion, not jetting. That is to say, when you pull the baffles, the mufflers draw cold air which causes unburned fuel in the exhaust to ignite and burn (pop). The only remedy for this would be to replace the baffles in the muffler as jetting wouldn't solve that problem.

    By: Staff

  • Is this the jet kit for a 1992 Suzuki Intruder vs800 with the cobra slash tip exhaust pipes?

    The bike worked fine then I put on the cobra slash tip pipes and the bike ran like crap and my buddy said I needed to rejet the carbs?

    By: Guest

    Yes, this Intruder 800 jet kit would certainly help out with your situation. While fuel-injected bikes do fairly well when going from a stock bike to aftermarket slip-on mufflers, carbureted bikes almost always need to be re-jetted to work with any new exhaust, be it a full system or just a set of slip-ons.

    Cobra's jet kits are specifically designed to work with Cobra mufflers (and full exhausts) as they come with a range of jetting components to work with both configurations. Best of all, the included instructions do a great job of explaining what to use in order to get your bike running correctly. You can't go wrong adding a Cobra jet kit to your Cobra exhaust-equipped bike!

    By: Staff

  • should I drill the slides on my 2003 suzuki 1500 intruder for more proformance

    I've installed the larger jets, front cylinder needle e clip in the 4th groove, rear cylinder 3rd groove. Front cylinder mixture screw 3.5 out, rear cylinder 4 out. Still pops when letting off, also seems to hang a little when shifting gears

    By: Guest

    It sounds more like an air leak issue than a carburetion problem. The best place to start would be to look for any intake or exhaust leaks before doing any other mods. Check all the intake and exhaust fittings for leaks and then see how the bike runs. From there, you should have a pretty good idea of where to go.

    By: Staff

  • It's this the jet kit i need for cobra drag pipes for my 2007 shadow 750dc

    By: May

    Yes, this particular Shadow 750 jet kit would be a perfect match for your machine since Cobra specifically develops these kits to work with their exhausts. Best of all, the included installation instructions clearly explain how to install and fine-tune the kit to get the most out of your bike.

    By: Staff