ARC Billet Flywheel for GX390 Honda Clone Engines Non-Adjustable

• Targeted for Power: Specifically designed for Honda GX340, GX390, 420cc, and 460cc engines, this flywheel bolsters big block clone performance in demanding kart applications.
• Fixed Reliability: Keyway locked at stock 24 degrees BTDC with a standard key, eliminating adjustment variables for consistent timing every race.
• Electric Start Ready: Seamlessly works with electric starters, maintaining pull rope compatibility for versatile setups.

At 4.5 pounds, this non-adjustable, gearless billet flywheel from ARC Racing strikes a balance between lightness and strength, using the stock coil—no bracket needed. It avoids complications with newer UT2 coils featuring 4500 RPM rev-limiters, so stick to earlier non-limited versions for unrestricted power delivery.

SFI certification guarantees safety and quality, crucial for high-stakes tracks where failure isn't an option. Install it to streamline your engine's rotation, reducing drag and allowing quicker throttle response that helps you pull away from the pack on restarts.

For kart enthusiasts building big block clones, this component simplifies organization by integrating directly with OEM parts, minimizing custom fab time. Torque specs are straightforward, ensuring a secure fit that withstands the vibrations of 400cc-plus powerplants.

Think beyond the basics: this flywheel's robust construction aids in heat management, keeping ignition components cool during extended sessions. Racers note improved mid-range torque, vital for navigating technical circuits where sustained speed wins races.

Compatible across GX series big blocks, it excludes gear-driven accessories, focusing purely on core performance. The SKU ARC6623 identifies this as your ticket to a more efficient, faster-revving kart—ideal for classes allowing modified engines.

In practice, pairing with a balanced assembly amplifies benefits, cutting lap times through smoother power curves. Whether you're a weekend warrior or pro tuner, this flywheel organizes your setup for peak output, turning potential into podium results.

Frequently Asked Questions

Q: Is this flywheel compatible with my electric start system?

A: Yes, the ARC6623 is designed to be fully compatible with electric starters while maintaining compatibility with standard pull-rope setups, making it a versatile choice for various big block configurations.

Q: What ignition timing does this flywheel provide?

A: This flywheel is non-adjustable and features a keyway locked at a stock 24 degrees BTDC (Before Top Dead Center) when used with a standard key, ensuring consistent and reliable timing for every race.

Q: Can I use this with the newer UT2 coils?

A: No, this flywheel is designed for earlier, non-limited ignition coils. Newer UT2 coils often feature built-in 4500 RPM rev-limiters that will restrict your engine's performance; we recommend using an earlier, unrestricted coil for best results.

Q: Do I need a special bracket to install this flywheel?

A: No, this flywheel is designed to work with the stock coil without the need for additional brackets, simplifying your installation process.

Q: Is this flywheel SFI certified?

A: Yes, this ARC Billet Flywheel is SFI certified, providing the necessary safety and structural integrity required for high-stakes racing and high-RPM applications.

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