Lectron Carburetor Kits for Single Cylinder Engines | Carb Upgrade Kit for High Power (30mm-59mm)

Lectron Carburetor Kits for Single Cylinder Engines | Carb Upgrade Kit for High Power (30mm-59mm)

$599.99
$599.99
Shipping calculated at checkout.

Each Carburetor Kit is built-to-order based on your exact engine requirements. Available in single cylinder engines from the PRO SERIES or Lectron EVO lines. Ideal for unique builds, rare engines, and riders who want a tailored, high-performance solution that can’t be found off the shelf.

Includes

All kits come with:

  • (1) Lectron EVO 30mm-59mm Carburetor and setup for vehicle
  • (1) Throttle cable for required function (except 30mm)
  • (2) Lectron Stickers
  • (1) Tuning Manual and Installation Guide

*NOTE: Some packages come with a throttle, and/or metering rod adjustment tool.

Description Features + Compatability Chart Specs FAQ

Tailored performance. Built to fit.
Our Custom Single Cylinder Carburetor Kits are designed for riders and builders who need a precision-fit solution for unique engine setups. Whether you’re working with a custom intake, a rare vintage engine, or a build that doesn’t fit standard applications, these kits are built-to-order from our proven product lines — including PRO SERIES and Lectron EVO carbs. Sizes include 30mm, 34mm, 36mm, 38mm, 40mm, 44mm, 48mm, 52-50, 52mm, 54mm, 56mm, 58mm. Carburetors will be constructed in highly durable billet aluminum. 

Every custom kit is configured to match your specific engine dimensions, displacement, and goals. We guide you through a quick measurement and setup process, then assemble and ship a complete kit tailored to your needs.

🏁 Who It’s For:
Builders, restorers, and performance riders running non-standard engines, custom chassis, or dual-carb setups who want a precise, high-quality carburetor system — without compromise.

Metering Rod

The Standard Metering Rod is a key component of our dual-circuit fueling system, engineered for smooth throttle response and clean power delivery. Positioned directly in the manifold pressure zone, it responds instantly to changes in throttle input, drawing fuel based on airflow velocity and engine load.

The rod’s contoured surface and precision grind control the fuel pickup signal with exceptional accuracy. As airflow increases, the rod delivers atomized fuel in a fine vapor—optimizing combustion, improving throttle snap, and eliminating flat spots.

Unlike traditional carburetors with overlapping circuits, the Standard Metering Rod delivers a linear fueling curvewithout hesitation or surge. This design enhances rideability, fuel economy, and power across the entire RPM range.

Power Jet System

Adds external adjustability of fuel for wide-open throttle positions. Fine tune your top end for increased power without sacrificing midrange - Ideal for racing and high-speed performance.

Proven Performance

Our carburetors are built on well-established fuel delivery principles that have been tested across countless on and off-road applications. Whether you're racing, trail riding, or running a custom build, you can count on predictable throttle response, smooth power delivery, awesome peak power, and long-term reliability.

This is performance you can feel — without needing to overthink it.

Billet Aluminum Construction

Our carburetors are CNC-machined from billet aluminum, delivering superior strength, precision, and durability. Billet aluminum starts with a solid block of aerospace-grade aluminum, each body is machined to exact tolerances, ensuring flawless accuracy and consistent quality that cast construction simply can’t match. Unlike cast carbs, billet aluminum provides enhanced reliability, long-term durability, and a premium finish that reflects its performance-driven design.

Built for riders who demand the very best, our billet carburetors combine long-term reliability with championship-level performance. This is more than just a carburetor—it’s a premium upgrade that reflects the highest standard of engineering and design.

No-Jetting

Our carburetors use a dynamic fuel delivery system that self-compensates for changing conditions like altitude, temperature, and humidity. Unlike traditional carbs that require constant jetting adjustments, ours deliver consistent fueling with no extra effort.

Just bolt it on and go — whether you’re riding at sea level or climbing elevation.

… …

FAQ

What if I need help with install or tuning?

No problem - we've got you covered. Our dedicated support team has extensive experience tuning and installing Lectron carburetors across a wide range of bikes and riding styles. Whether you're working through your initial setup or fine-tuning for specific conditions, we're here to help. Reach out anytime - we'll make sure your carb is dialed in and your bike runs like it should.

Will the carb come pre-tuned?

We have over 50 years of experience with tuning carburetors. We setup each carb to a fundamentally determined setting based on information you provide to us. Your carb will be very close or spot on when received. With that said, varying factors like the bikes condition, wear, maintenance, oil ratio, and age of fuel can have an effect with tuning. We suggest a simple, slight tuning at install to achieve max performance and preferability. Once you set it, forget it. Enjoy no-hassle.

What's the difference between Lectron carbs and stock/OEM carbs?

Lectron carbs are built for riders who want simplicity without compromising performance.

Unlike stock carbs that rely on jets and constant tuning, Lectron uses a metering rod system that automatically adjusts fuel delivery based the conditions around you (elevation, temperature, humidity, etc..) . No jets to swap. No guessing. Just ride.

Here’s what sets us apart:

  • No Jetting Required – Adapts to changes in altitude, temperature, and mods automatically.
  • Smooth, Predictable Power – Strong bottom-end and midrange torque with linear throttle response.
  • Fewer Parts, Less Tuning – Simpler design means less time wrenching and more time riding.
  • Built for Performance – Whether you're racing or trail riding, you get better performance without the hassle.

It’s the performance you want, with the simplicity you’ve been missing.