04-05 Yamaha YFZ450 YFZ 450 cc 6 Sigma Custom Carburetor Carb Stage 1-3 Jet Kit

Description

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 main jets in a box, 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.
Kit Includes
Main Jets
(Multiple main jets for high end fine tuning)
Pilot / Slow / Idle Jet
--
(Up-sized, most important for low end torque)
Leak Jet
(Stops the stumble of quick throttle "whacks")
Needle Adjusters
Accelerator Pump Modification
(The Big Squirt)
Nylon Spacers
Drill Bits for
Air Box Modification (Free flowing intake)
Idle Mixture Modification
Exhaust Header and Muffler Modification (Allows it to flow substantially more air)
Bike Specs
Carb Schematic
Carb Synchronizer Tool (how to build for )
Step by step instructions with photos. (12 page tuning manual / guide)
Installation Support - If you need assistance with installation or have a question we are there for you.
Benefits
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.
We MUST have the following information to design & ship your Custom 6 Sigma Jet Kit
Year
Exact Model
Modifications (engine, exhaust, intake, filter type etc . . .)
Riding Elevation (height above sea level, and any extreme conditions)
Please provide this information in the NOTES TO SELLER section after check out or in email or through Ebay messages.
Shipping
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.
Installation
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.
FAQ'S
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 .
Q:
What size jets come in this kit?
A:
Each kit is different, based on the bike, modifications, and operating altitude
, so jet sizes vary.
Q:
What Stage (1-7) is this kit?
A:
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 0 to 0 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.