Select Your Ride

1
2
3

MIKUNI Main Jet #125 - 4-Pack 4/042-125

Part Number: KM4042125
MIKUNI
(No reviews yet) Write a Review
SKU:
KM4042125
MPN:
4/042-125
Condition:
New
Availability:
Ships Same Business Day
Weight:
0.05 LBS
view larger
$14.56
Prop 65 Warning Prop 65 Warning cancer & reproductive harm Price Match Call for more info on price match does not include 3rd party ads

Description

Precision fuel metering is the foundation of carburetor tuning, and running the correct main jet size is non-negotiable for consistent performance across throttle positions. This 4-pack of genuine Mikuni #125 main jets gives you the sizing flexibility to dial in your air-fuel ratio for your specific engine, altitude, and fuel type—whether you're chasing peak power or optimizing part-throttle response. Keeping spare jets on hand eliminates downtime and lets you make quick jetting adjustments without waiting for replacements.

  • Genuine Mikuni product
  • Size: #125 main jet
  • Quantity: 4 jets per pack
  • MPN: 4/042-125
  • Made in Japan
  • Fits VM18 clamp-on carburetors
  • Fits VM24-512 carburetors
  • Fits VM26-512 carburetors
  • Fits VM26-606 carburetors
  • Fits TMX Series carburetors
  • Compatible with OE applications
  • Replaces 4/042 jets
  • Verify dimensions before ordering
  • Bolt-on installation
View AllClose

Specs

OVERALL DIAMETER:
6,00 MM (0,24')
OVERALL DIAMETER METRIC:
6.00 MM
OVERALL LENGTH IMPERIAL:
0.47'
RIDING STYLE:
ADVENTURE TOURING / DUAL-SPORT
RIDING STYLE:
UTV
TYPE:
MAIN
FEATURES:
FOR VM CARBURETORS
PRODUCT NAME:
JET
RIDING STYLE:
STREET
HEAD TYPE:
HEX HEAD
JET SIZE:
125
MATERIAL:
BRASS
OVERALL LENGTH:
12 MM (0,47')
OVERALL LENGTH METRIC:
12 MM
RIDING STYLE:
OFF-ROAD
RIDING STYLE:
SNOW
UNITS:
4 PACK
OVERALL DIAMETER IMPERIAL:
0.24'
RIDING STYLE:
ATV
View AllClose

0 Reviews

View AllClose

Fitment

Fitment for MIKUNI Main Jet #125 - 4-Pack 4/042-125

View AllClose

FREE Shipping on orders of $99 or more!

Commercial Accounts

We offer tax-free commercial accounts, providing businesses with significant savings and streamlined benefits.

Details

Easy 30-Day Returns

We proudly offer 30-day easy returns, ensuring a hassle-free and convenient shopping experience for our customers.

Details

You May Also Like

Related Products

Related Products

MIKUNI Main Jet - 4-Pack N100604-125
Quick view

MIKUNI Main Jet - 4-Pack N100604-125

MIKUNI

$14.55
Proper jetting is fundamental to carburetor performance—too rich or too lean, and you'll sacrifice throttle response, fuel economy, and engine reliability. This 4-pack of Mikuni main jets gives you...
KN100604125
Add to Cart

Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

SECURE & SAFE PAYMENT

EASY RETURNS

FAST DELIVERY

AUTHORIZED DEALER

Privacy Policy | Terms of Use | Site Accessibility