Here’s a breakdown of why the Spoon Spirts S-Tai 3rd-4th-5th Gear Set for the Honda Civic Type R 6BA-FL5 (part number 21000-FL5-000) is considered better than OEM for performance and track-focused use:
🏁 Key Advantages Over OEM Gears
🔩 1. Much Higher Strength & Durability
Spoon completely redesigned these gears from the ground up — not just re-using Honda’s design with harder steel. They optimized:
- Material composition for a balance of hardness and toughness
- Surface and core hardness layers
- Gear tooth geometry and strength
The result: ~30,000× improvement in bending fatigue strength and 4× better pitching durability compared with stock OEM gears based on Spoon’s analysis and testing. This significantly reduces the chance of failure under high stress like long track sessions or endurance races.
**Bottom line: These gears are far more resistant to cracking, wear, and failure than stock gears under prolonged hard use.
🏎 2. Proven Through Motorsport Endurance Testing
Spoon developed this set after two transmission failures during a 24-hour endurance race. After over 3,500 km of rigorous track testing, they ran the car trouble-free for a full 24-hr race the following season.
This means the gear set isn’t just spec’d on paper — it has real testing history in conditions far harsher than street driving.
⚙️ 3. Optimized Gear Ratios (Subtle but Performance-Oriented)
The S-Tai gears have slightly adjusted ratios compared with stock:
- 3rd gear: 1.522 vs OEM 1.529
- 4th gear: unchanged at 1.125
- 5th gear: 0.903 vs OEM 0.911
These small changes can smooth acceleration and help keep the engine in a more usable power band during hard driving.
While not a dramatic close-ratio kit, it’s tuned for real-world performance use without sacrificing drivability, unlike some aftermarket ratios that are mainly for drag or race setups.
🏆 Who Benefits Most
✔ Track day warriors and endurance racers
✔ Drivers with power mods that increase torque beyond stock
✔ Anyone concerned about gearbox reliability during serious use
📌 OEM vs Spoon S-Tai — Quick Comparison
|
Feature |
OEM Gears |
Spoon S-Tai Gears |
|
Material/Hardness |
Standard OEM specification |
Optimized high-strength material |
|
Bending fatigue strength |
Baseline |
~30,000 X stronger |
|
Pitch durability |
Baseline |
~4 X stronger |
|
Track-test proven |
No |
Yes (endurance testing) |
|
Usable daily driving |
Great |
Good to very good |
|
Ideal for heavy stress |
Moderate |
Excellent |
✅ Summary: The Spoon S-Tai gear set is not just harder — it’s engineered, tested, and proven to survive conditions that would stress or break the OEM gears, especially under endurance or aggressive track driving. It also slightly tweaks ratios to keep power delivery effective for spirited driving.
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