Keihin (it's "kayheen" with accent on second syllable )

Factory Pro Replica jets, Keihin and Mikuni, follow the original manufacturer's size scale so the Factory Pro Replica jets are interchangeable with original jets - saving a lot of time and improving accuracy for a good tuner.

Keihin Pilot jets (aka "slow jets") Keihin
yzf600 R6, 00-01 zx9r, KTM 950 n424-74c-xxx  F-Pro k type Pilot Jets $5.95ea Buy now 4 pc pack / $23.80 1. Choose your shipping method 14.00 Domestic USA Standard Ground 48.00 International USPS Express, tracked 44.50 Russia, USPS Priority, no tracking 8.00 each additional item in shipment 2. Choose your size Size you want.  38 x 4 pcs, use for Ca R6)">38 (use for Ca R6) 40 use for 49 state / unrestricted R6 (4 pcs, use for 00-01 zx9r)">42 (use for 00-01 zx9r) (4 pcs, use for KTM 950 carbs)">45 (use for 2 sets of KTM 950 carbs) 3. Add to cart (415) 883-5620	Keihin n424-74c-xxx	5.0mm diameter Slot head 28mm Length	yzf600 R6 00-01 zx9r KTM 950 Keihin style Pilot Jets
	Keihin 21 series		OEM Honda CV carbs We either have OEM or we make Factory Pro replicas	Call 800 869-0497 to buy
	Keihin 22 series		We have OEM Keihin	Call 800 869-0497 to buy
	Keihin 25 series	5.5mm diameter Slot head 15mm Length	OEM Kaw CV carbs FCR "Flatslides" We either have OEM or we make replicas	Call 800 869-0497 to buy
	Keihin 26 series	5.0mm Slot head 22.5mm Length	OEM Honda dirt bikes w/ CV carbs + We have OEM	Call 800 869-0497 to buy
Main jets, Keihin ( say "Kayheen")
	Keihin 393 series	"Kayheen" Known as: "Keihin small, round, slotted jets" 5 x .8 thread	most OEM CV carbs	We have: 50 to 250 (larger than Keihin's 225!) Call 800 869-0497 to buy
	Keihin 357 series	"Kayheen" Known as: "Keihin long hex jets" 5 x .8 thread	almost every FCR and CRS Smoothbore or Flatslide carb	Call 800 869-0497 to buy
	Keihin 806 series	"Kayheen" Known as:"Keihin Harley jets" 6 x 1.0 thread	fits original HD Keihin CV carbs	Call 800 869-0497 to buy

\Identify emulsion tubes and needle jets, Mikuni

Identify Yamaha Virago emulsion tubes and needle jets

Identify Honda VTR1000 emulsion tube / needle jet front and rear

FCR needles

needle shims

Emulsion Tubes

Keihin FCR emulsion tubes by F Pro Factory Pro's HDJ emulsion tubes Downdraft  FCR carbs

Replaces the original  FCR emulsion tube. Makes more power and improves throttle response. On a test yz250f, we gained 5% to 7% hp at peak and better part throttle. The FCR secret.

FCR emu tubes for Downdraft mount  fcr 28, 31, 33, 35, 37,39,41mm for Downdraft mount  fcr

pn: CRZ-EMU- 00037 for orig equipment horizontal mx type Keihin FCR carbs also for  aftermarket horizontal FCR carbs. $79.95 each 1. Choose your shipping method 14.00 Domestic USA Standard Ground 48.00 International USPS Express, tracked 48.50 Russia, USPS Priority, no tracking 8.00 each additional item in shipment 2.

Keihin FCR emulsion tubes by F Pro Factory Pro's HDJ emulsion tubes for mx type, original equipment FCR carbs. and Aftermarket horizontal  FCR carbs also avail Downdraft  FCR carbs

Replaces the original  worn, overrich FCR emulsion tube. Makes more power and improves throttle response. On a test yz250f, we gained 5% to 7% hp at peak and better part throttle. The FCR secret.

FCR emu tubes 28, 31, 33, 35, 37,39,41mm for HORIZONTAL mount  fcr

pn: CRZ-EMU-125k / 036 for orig equipment horizontal mx type Keihin FCR carbs also for  aftermarket horizontal FCR carbs. $79.95 each 1. Choose your shipping method 14.00 Domestic USA Standard Ground 48.00 International USPS Express, tracked 48.50 Russia, USPS Priority, no tracking 8.00 each additional item in shipment 2.

Emulsion Tubes, HDJ

note the big fuel drops at the backside of the needle.

note the frothy white spray at the backside of the needle.

patented High Dispersal Jet System HDJ  available for licensing Easily retrofitable in many OEM Keihin, Mikuni and aftermarket carbs and simple to make minor modifications in manufacturing process to incorporate. Significantly better fuel atomization, runs without misfire at leaner fuel delivery rates, better power from the same amount of fuel, more consistent, smooth running, as verified on EC997 Low Inertia dyne FLUX value engine smoothness testing. I can explain that if you are not using that dyne system and cannot get that data.

main jets

carb tools

Mikuni Needle Jets / Emulsion Tubes

UNDER CONSTRUCTION!!!!

• Factory Pro Precision and Quality.
   
• Factory Pro labeled.
   
• Experienced tuners know that proper design and multi-step inspection processes are necessary to produce the highest quality carburetor jets.
• Each metering orifice is identical - jet to jet!
   
• Factory Keihin Main Jets are designed to be direct replacements for Genuine Keihin jets.
  • Original "0,2,5,8,10" numbering system for "Keihin style".
     
• Factory Mikuni Main Jets are designed to be direct replacements for Genuine Mikuni jets.
  • Original "0,2.5,5, 7.5, 10" numbering system for "Mikuni style"
     
• Designed to flow on the OEM fuel flow scale - not an arbitrary scale that locks tuners to hard to find brand.

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