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ARC GX200 Honda/Clone/Tillotson Speedway Billet Flywheel
6689 ARC GX200 Honda/Clone/Tillotson Speedway Billet Flywheel
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ARC GX200 Honda/Clone/Tillotson Speedway Billet Flywheel

Part Number: 6689
Online Price: $120.00
ARC Racing 6689 Billet Flywheel – Ultra-Low Drag Design for AKRA/NKA Racing Engines | Maximize Performance
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Description

ARC Racing 6689 Billet Flywheel – Ultra-Low Drag Design for AKRA/NKA Racing Engines


The ARC Racing 6689 Billet Flywheel is engineered for maximum performance in AKRA/NKA racing engines, featuring an ultra-low drag fin design that reduces air drag without sacrificing cooling. This innovative design frees up valuable power throughout the entire power curve, especially at the top end, giving you a competitive edge in oval track racing.


By minimizing air drag, the 6689 billet flywheel allows your engine to run more efficiently, delivering more power where you need it most. Whether you’re racing on AKRA or NKA tracks, this flywheel helps you gain the extra power needed for faster lap times and enhanced performance on the track.


Key Features & Benefits:

  • Ultra-Low Drag Fin Design – The flywheel’s unique design significantly reduces air drag, freeing up power throughout the engine’s power curve, especially at higher RPMs, while still ensuring efficient cooling.
  • More Power at the Top End – The reduction in drag improves engine efficiency, especially at the top end, where every bit of horsepower counts during high-speed oval track racing.
  • AKRA/NKA Compliant – Fully designed for AKRA and NKA unrestricted engines, the 6689 flywheel meets all racing regulations, providing a legal upgrade that enhances both power and reliability.
  • Optimized Timing Range – Factory-set at 32 degrees timing with a stock key, this flywheel is compatible with unrestricted engines (recommended timing 34-36°) and plate engines (recommended timing 36-38°) for fine-tuned performance.
  • Improved Coil Gap for More Power – The minimum coil gap is set at 0.030", but in ARC’s testing, a gap of 0.065-0.075 delivered optimal performance. Opening up the coil gap helps reduce magnet drag, allowing the flywheel to work more efficiently and freeing up more power.
  • Lightweight & Durable – Weighing just 3.4 lbs, the flywheel is legal for AKRA/NKA box stock classes and is designed for maximum durability and lightweight performance.
  • OEM Coil & Pull Rope Compatibility – Designed to work seamlessly with a stock pull rope and OEM coil, the flywheel integrates perfectly into your existing engine setup without the need for additional modifications.

Engine Compatibility:

  • Honda GX160/GX200
  • Clone 196cc
  • Ducar 196/212/224
  • Tillotson 196/212/225
  • Wildcat 223/240
  • Predator 224 Non-Hemi

Note: This flywheel does not fit the 212 Predator engines or Predator 224 Hemi.

Installation Notes:

  • Torque to 65 ft/lbs when installing the flywheel.
  • Recommended coil gap range: 0.065”–0.075” for optimal performance.


Why Choose the ARC Racing 6689 Billet Flywheel?

For serious oval track racing, the ARC Racing 6689 Billet Flywheel is the serious choice for AKRA/NKA engine builders looking to maximize performance. Its low drag fin design and powerful magnets work together to unlock more power across the entire powerband, especially at higher RPMs, giving you the edge over the competition.


With an optimized coil gap and ideal timing setup, this flywheel is a simple yet highly effective upgrade that will transform your engine’s performance without breaking the bank. Whether you're racing in unrestricted or plate engine classes, the 6689 flywheel is the performance upgrade you need to win.

FAQ

Q1: What engines are compatible with the ARC Racing 6689 Billet Flywheel?
A1: The 6689 Billet Flywheel is compatible with a variety of engines, including:

  • Honda GX160/GX200
  • Clone 196cc
  • Ducar 196/212/224
  • Tillotson 196/212/225
  • Wildcat 223/240
  • Predator 224 Non-Hemi
    Note: This flywheel does not fit 212 Predator engines or Predator 224 Hemi engines.


Q2: What is the recommended coil gap for the ARC Racing 6689 Billet Flywheel?
A2: The minimum coil gap is set at 0.030". However, ARC’s testing shows that a gap between 0.065" and 0.075"works best for most unrestricted and plate engines. Opening the gap helps reduce magnet drag, allowing the flywheel to operate more efficiently and unlock additional power.


Q3: How much does the ARC Racing 6689 Billet Flywheel weigh?
A3: The 6689 flywheel weighs just 3.4 lbs, making it a lightweight and durable option for your racing engine. It meets the AKRA/NKA box stock class requirements and offers both performance and reliability without adding unnecessary weight.


Q4: What timing is recommended for engines using the 6689 Billet Flywheel?
A4: The flywheel is factory-set at 32 degrees timing with a stock key. For optimal performance:

  • Unrestricted engines should run at 34-36°
  • Plate engines should run at 36-38°


Q5: Can I use the ARC Racing 6689 Billet Flywheel with a stock pull rope and coil?
A5: Yes! The 6689 billet flywheel is designed to work seamlessly with a stock pull rope and OEM coil, making it a simple upgrade for existing engine setups without the need for additional modifications.


Q6: Is the ARC Racing 6689 Billet Flywheel legal for AKRA/NKA racing?
A6: Absolutely! The 6689 billet flywheel is fully AKRA/NKA compliant, meeting all regulations for unrestricted engine classes. It’s the perfect upgrade for kart racing enthusiasts looking for better performance and reliability on the track.


Q7: How do I install the ARC Racing 6689 Billet Flywheel?
A7: When installing the 6689 flywheel, make sure to torque it to 65 ft/lbs. Additionally, ensure that the coil gap is adjusted within the recommended range of 0.065"–0.075" for optimal performance.


Q8: What advantages does the ARC Racing 6689 Billet Flywheel provide?
A8: The 6689 billet flywheel features an ultra-low drag fin design, which reduces air drag while still maintaining efficient cooling. This results in improved top-end power, faster lap times, and better overall engine performance for AKRA/NKA racing. It’s the perfect performance upgrade for unrestricted and plate engine classes.

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