MIKUNI VM Series Round Slide Carburetor - 38mm Bore for Snowmobiles

Description

Upgrade your snowmobile's fuel delivery system with MIKUNI's VM Series Round Slide Carburetor. This high-performance component delivers precise air-fuel mixture control, ensuring optimal power and reliability in even the harshest conditions.

Key Features

  • 38mm Bore & 21mm Venturi: Engineered for balanced airflow and fuel efficiency across a range of snowmobile engines.
  • Aluminum Body: Lightweight yet durable construction resists corrosion and maintains structural integrity in extreme weather.
  • Round Slide Throttle Valve: Smooth, responsive throttle control for precise power delivery and rider feedback.
  • Adjustable Needle Jet: Fine-tune fuel delivery for custom performance tuning and altitude compensation.
  • Cable-Style Choke Adapter: Simplifies installation and compatibility with older snowmobile systems.
  • Compact Design: 3.5" x 3" footprint fits standard mounting locations without modification.

Why Choose This Product

MIKUNI's VM Series carburetor combines decades of expertise with modern engineering to deliver unmatched reliability. The round slide design provides superior throttle response, while the adjustable needle jet allows for precise fuel calibration. The aluminum body withstands harsh winter conditions, and the included choke adapter ensures compatibility with legacy systems. Whether you're modifying a classic snowmobile or optimizing a modern rig, this carburetor offers the precision and durability needed for serious off-road performance.
SKU: GMA9EFEAE4
MPN: FVM38-21
Brand: MIKUNI
Stock: In Stock
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MIKUNI VM Series Round Slide Carburetor - 38mm Bore for Snowmobiles
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Upgrade your snowmobile's fuel delivery system with MIKUNI's VM Series Round Slide Carburetor. This high-performance component delivers precise air-fuel mixture control, ensuring optimal power and reliability in even the harshest conditions.

Key Features

  • 38mm Bore & 21mm Venturi: Engineered for balanced airflow and fuel efficiency across a range of snowmobile engines.
  • Aluminum Body: Lightweight yet durable construction resists corrosion and maintains structural integrity in extreme weather.
  • Round Slide Throttle Valve: Smooth, responsive throttle control for precise power delivery and rider feedback.
  • Adjustable Needle Jet: Fine-tune fuel delivery for custom performance tuning and altitude compensation.
  • Cable-Style Choke Adapter: Simplifies installation and compatibility with older snowmobile systems.
  • Compact Design: 3.5" x 3" footprint fits standard mounting locations without modification.

Why Choose This Product

MIKUNI's VM Series carburetor combines decades of expertise with modern engineering to deliver unmatched reliability. The round slide design provides superior throttle response, while the adjustable needle jet allows for precise fuel calibration. The aluminum body withstands harsh winter conditions, and the included choke adapter ensures compatibility with legacy systems. Whether you're modifying a classic snowmobile or optimizing a modern rig, this carburetor offers the precision and durability needed for serious off-road performance.
SKU GMA9EFEAE4
MPN FVM38-21
Brand MIKUNI
Category Intake/Carb/Fuel System
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Reviews

Make Model Years
Kawasaki KX450F 2009-2019
Honda CRF450R 2010-2020
Yamaha YZ450F 2008-2018
KTM 450 SX-F 2012-2022

Frequently Asked Questions

No, it ships with stock jets. A stage 1 or 2 jet kit is recommended for proper tuning based on your model and mods.

Often bolts on directly but may require manifold adapters or linkage adjustments on some models like KTM or later Hondas.

FVM38-21 is a specific variant in Mikuni's FCR/VM flat-slide series optimized for 38mm bore with 21 venturi for mid-high RPM performance.

Primarily for off-road/motocross; for street, consider adding choke circuits or emissions-compliant versions.

Typical starting point: 168 main, 50 pilot, but dyno tune for best results.

Installation Guide

Difficulty Medium
Est. Time 1 hr 0 min

Tools Required

  • screwdriver set
  • carburetor synch tool
  • jet kit
  • torque wrench
  • 12mm socket

Pro Tips

  • Always install with a fresh jet kit and tune for your altitude/elevation
  • Use carb cleaner before install
  • Double-check slide and needle settings

Common Mistakes to Avoid

  • Incorrect jetting leading to lean/rich conditions
  • Not syncing with other carbs on multi-carb setups
  • Overlooking intake boot inspection

Comparison vs Stock/OEM

Replaces stock Keihin/PWK carbs with smoother flat-slide action vs. stock round slide

Improvements

  • Quicker throttle response
  • Better mid-top end power
  • Easier tuning
  • More precise fuel delivery

Considerations

  • Requires jetting expertise
  • May need ECU flash for fuel injection bikes

Durability & Warranty

Expected Lifespan 5+ years with proper maintenance
Warranty 1 year manufacturer defect warranty
Maintenance Clean every 10-20 hours of riding, rebuild every 50-100 hours, check floats/jets regularly

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