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Details about  Kawasaki Zephyr ZR 750 cc ZR750 6 Sigma Custom Carburetor Carb Stage 1-3 Jet Kit

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Kawasaki Zephyr ZR 750 cc ZR750 6 Sigma Custom Carburetor Carb Stage 1-3 Jet Kit
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Item condition:
13 Aug, 2012 14:30:06 BST
US $79.50
Approximately £48.74(including postage)
US $18.42 (approx. £11.29) Standard Int'l Shipping | See details
International items may be subject to customs processing and additional charges.  help icon for delivery - opens a layer
Item location:
phoenix, az, United States


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Item specifics



Part Brand:

6 Sigma



6 Sigma Racing

6 Sigma Racing

Visit Shop:   6 Sigma Racing
Installing a jet kit in your carb is the best way to get the maximum performance and longest life out of your bike.

The stock carburetor from the factory is designed to meet Import Regulations ... not peak performance. Once you install or modify an exhaust or intake, you have put your bike into a leaner condition that will eventually destroy your engine due to heat from running lean. If you notice any popping, you are extremely lean. Our jet kit provides the parts and installation instructions to enrich all the circuits in the carb, to fix this problem, and add performance you can feel in the seat. 

This is not just some jets in a bag, it is a comprehensive jet kit, addressing all throttle positions, throttle response, and each kit is custom made to your bike and its modifications. Replacing just the jets does not address 1/4-3/4 throttle, or throttle response, only full throttle. This Kit is for all throttle positions, and throttle response.

Please let us know year, exact model, level of modification, and altitude, so we can tailor our kit to the needs of your bike. All of these factors affect kit design.





  • More Peak Horse Power

          Designed to gain about 8%-10% in HP with intake and exhaust, 2-3% on bone stock.

  • Longer Engine Life

           The jet kit is a performance upgrade that not only increases power, but allows the engine to run cooler which increases engine component life.

  • Increased Performance

            Designed to improve all RPM ranges of performance and throttle response.

  • Lower EGT's (exhaust gas temperatures)

            If you have installed an aftermarket, or modified the stock exhaust or intake, this is needed or you will damage your engine. Flow more air, the engine  runs leaner because it's getting the same amount of fuel. Running lean causes detonation and hotter EGT's which ruin exhaust valves and destroy engines.     



Kit Includes

  • Main Jets
  • Needle Adjusters
  • Nylon Spacers
  • Drill Bits for
  • Slide Hole Mod (some models)
  • Idle Mixture Mod
  • Bike Specs
  • Carb Schematic
  • Carb Synchronizer Tool (how to build for $5)
  • Step by step instructions with photos customized to your bike.
  • Installation Support - If you need assistance with installation or have a question we are there for you.



  • Domestic orders will ship in 1-3 days and take about a week to receive from the date payment is made. 
  • International orders ship in 1-3 days and take at least 2 weeks to receive from the date payment is made.



The kit comes with complete instructions for installation. It is easy, just take it slow and pay attention. It is a straight forward process, and we offer full support, instructions, and a complete carb schematic. Only basic hand tools are required.

Fair and Honest Guarantee
Our goal is to provide a quality upgrade for your bike at a reasonable cost.  If you receive your kit and have questions please contact us and we will do what it takes to ensure your satisfaction.  We have worked to keep our overhead low and are able to pass along those savings to our customers, hence the price differences.

Q:  Is this kit for all (1,2,3,4,6) carbs on my bike?
A:  Yes,  1 Kit is for all the carbs on the bike. You only need to order 1 Kit for your bike.

Q: Do you ship international, and how much?
A: Yes, we ship worldwide, for $16.

Q: What size jets come in this kit?
Each kit is different, based on the bike, modifications, and operating altitude, so jet sizes vary.

Q: What Stage (1-7) is this kit?
Each kit is different, based on the bike, modifications, and operating altitude, so the Stage varies.

Q: Do I need a jet kit?
A: If you have made any modifications, or just want a little more performance out of your stock bike, then yes you do need a kit.

Q: Can I install this kit?
A: Yes, you can install it,
don't be intimidated if you've never done this before, only very basic skills are needed, and it has instructions with full support.

Q: How long does it take to install?
A: Time varies, but it is directly related to the # of carbs on your bike. Allow at least 1/2 hour per carb.

Q: Does this kit come with everything I need?
A: Yes, it is a comprehensive performance upgrade kit. Not to be confused with a basic rebuild kit.
Q: I just bought an intake/exhaust, why do I need this?
A:Why spend $300 to $700 for an exhaust and air filter that produce a 10%  increase in air flow while ignoring the big loss of horsepower due to not installing a comparatively inexpensive jet kit that increases the fuel flow to match.


Refund Policy

We guarantee 100% customer satisfaction. This means that if for any reason you are not fully satisfied you can cancel within 7 days of ordering or return any purchase in unused and good condition within 7 days from receipt and obtain a full refund of the price you paid or replacement of the product. Within 7 days from receipt send us a quick notice by email explaining your reasons (change of mind, fault, etc.) and indicating if you prefer a replacement or to receive your money back. Then send us back the items with return costs at your charge. Upon receipt of the returned goods we will either ship you free of charge the replacement items if available, or if not, we will refund the full price of the items you are returning, according to your instructions. We will not accept for refund or replacement: Goods that have been either damaged or used (if there is a problem, and they have been used, we will ship you correct replacements); Goods returned to us after 14 days from receipt; Packages returned on a COD basis or freight collect.

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