When it comes to mountain biking performance, your rear bike hub plays a crucial role. It determines how fast power transfers from your pedals to the wheel—and ultimately how responsive your bike feels.
Koova’s 75T precision MTB hub has gained attention for its fast engagement, conical ratchet stability, and durable construction. This guide breaks down what “75T” really means and how it compares to standard ratchet systems.
What Does “75T” Mean in an MTB Hub?
The “75T” refers to 75 teeth inside the hub’s ratchet mechanism. More teeth = smaller rotation before engagement.
With a 75-tooth ratchet, each engagement happens every:
👉 4.8° of crank movement
This means:
- Faster acceleration
- Sharper response in technical terrain
- Better control when climbing or sprinting
Key Features of the Koova 75T Precision Hub
1. Conical Ratchet = Self-Centering Stability
One of the main differences between Koova’s system and common flat ratchets:
🔺 Koova uses a conical, self-centering ratchet design
Benefits:
- Automatically centers itself during engagement
- Provides even contact pressure
- Reduces side-load stress on teeth
- Greatly improves long-term stability at high torque
- Smoother meshing = quieter and stronger power transfer
This is especially valuable for aggressive enduro, DH, and high-torque e-MTB use.
2. Strong Engagement Force
Compared to traditional pawl hubs or lower tooth counts (36T / 54T):
- Larger contact surface
- Reduced chance of skipping under heavy load
- More consistent torque transfer when standing or climbing
This gives the Koova 75T hub a noticeable “solid” feeling.
3. 4.8° Fast Engagement for Technical Trails
The 75T system offers faster-than-average engagement, ideal for:
- Technical rock gardens
- Slow-speed climbing
- Quick acceleration bursts
- Riders who need instant reaction
This is why many riders say:
"Once you ride a 75T hub, you never go back.”
4. Hardened Ratchet System for Longer Life
Koova uses a 5-step surface hardening process, improving:
- Wear resistance
- Heat resistance
- Durability in muddy or wet MTB environments
Ideal for riders in rainy regions or long-term bike hub service needs.
→ For more information on hub parameters
How to Order Koova Hubs
Koova supplies MTB hubs for riders, bike shops.