Hub Ratchet System Comparison: DT Swiss Star Ratchet vs Shimano vs Others

The hub is one of the most overlooked yet most impactful components in a wheelset. Specifically, the ratchet mechanism inside the hub determines how quickly and efficiently the power from every pedal stroke reaches the rim. Different ratchet systems have very different characteristics, and choosing the right one can meaningfully improve your riding experience.

Basic Principles of Ratchet Systems

When you pedal, power flows through the chain, to the cassette, through the ratchet mechanism, into the hub shell, out through the spokes, and finally to the rim. The ratchet mechanism provides “one-way drive” — it engages to transmit power when pedaling, and allows the hub shell to spin freely when coasting.

Two key metrics for any ratchet system:

1. Engagement angle: the minimum rotation needed to go from coasting to full engagement — smaller is better
2. Bearing surface area: the contact area when engaged — larger means more durable

Major Ratchet Systems Explained

DT Swiss Star Ratchet

Spec	Data
Design	Two star-shaped ratchet rings facing each other
Tooth count options	18T / 36T / 54T
Engagement angle	20° / 10° / 6.67°
Load bearing	Full-tooth-face contact
Upgradeability	Swap the ratchet rings
Sound	Low to moderate
Maintenance difficulty	Very low
Representative wheelsets	DT Swiss, FFWD, Hunt

How it works: Two toothed star-shaped discs sit face to face, pressed together by a spring in between. When pedaling, the teeth mesh to transmit power; when coasting, the spring separates the teeth.

Advantages:

• All teeth engage simultaneously, spreading load evenly
• More even wear, longer lifespan
• Simple upgrade path — just swap the ratchet rings
• Extremely simple maintenance, few parts

Disadvantages:

• The stock 18T has a wider engagement angle (20°)
• Upgrading to 36T or 54T requires an extra purchase

Shimano Pawl System

Spec	Data
Design	2-3 pawls engaging a toothed ring
Number of pawls	2-3
Points of engagement	Varies by model
Load bearing	Pawl-face contact
Upgradeability	Not upgradeable
Sound	Quiet
Maintenance difficulty	Moderate
Representative wheelsets	Full Shimano lineup

How it works: Spring-loaded pawls pop out and engage a toothed ring inside the hub shell. When pedaling, the pawls are driven by the ring; when coasting, the pawls slide over the ring.

Advantages:

• Very quiet (among Shimano’s quietest hubs)
• Mature, reliable construction
• Shimano’s worldwide service network

Disadvantages:

• Engagement speed lags behind Star Ratchet
• Load is concentrated on just a few pawls
• Not upgradeable

Campagnolo CULT / USB

Spec	Data
Design	Pawls engaging a toothed ring
Number of pawls	2-3
Bearings	CULT full ceramic / USB steel ball
Sound	Moderate
Representative wheelsets	Bora Ultra, Fulcrum Speed

Highlight: The biggest highlight of Campagnolo’s ratchet system isn’t the ratchet itself, but the CULT bearing system — full ceramic balls paired with Cronitect stainless steel races, delivering extremely low friction.

Industry Nine Hydra

Spec	Data
Design	6 pawls x 115 teeth
Points of engagement	690 points
Engagement angle	0.52°
Sound	Very loud (“swarm of bees”)
Representative wheelsets	Boyd, some hand-built wheels

Highlight: 690 points of engagement is currently the densest design on the market. A 0.52-degree engagement angle means nearly instantaneous engagement — you push, it goes, with virtually no delay. The tradeoff is very loud freewheeling noise.

Chris King RingDrive

Spec	Data
Design	Interlocking dual ring gears
Engagement angle	About 5°
Sound	The classic “Chris King buzz”
Maintenance	Requires special tools
Representative wheelsets	ENVE + Chris King

Highlight: Chris King hubs are known for extreme durability and precision. The RingDrive system uses two interleaved ring gears to deliver a good balance of engagement speed and load capacity.

Ratchet System Comparison Table

System	Engagement Angle	Durability	Sound	Maintenance	Service in Taiwan	Price
DT Swiss 18T	20°	Very high	Low	Very easy	Very convenient	Mid
DT Swiss 36T	10°	High	Moderate	Very easy	Very convenient	Mid
DT Swiss 54T	6.67°	High	Moderate	Very easy	Very convenient	Mid
Shimano DA	~7°	High	Very low	Moderate	Convenient	High
Campagnolo CULT	~10°	Very high	Moderate	Difficult	Limited	Very high
I9 Hydra	0.52°	Moderate-high	Very loud	Moderate	Very difficult	High
Chris King	~5°	Very high	Moderate-loud	Difficult	Limited	Very high

Recommendations for Riders in Taiwan

Top pick: DT Swiss Star Ratchet

The reasoning is simple — in Taiwan, DT Swiss has the most complete service support. Parts are easy to source, mechanics are generally familiar with the system, and pricing is reasonable. If you want to upgrade from 18T to 36T or 54T, an upgrade kit costs only NT$1,500-2,000 and takes just 10 minutes to install.

Second choice: Shimano

If you’re running a full Shimano drivetrain, pairing it with a Shimano hub is the most seamless choice. The quiet ride and Taiwan’s excellent after-sales support are its biggest advantages.

Not recommended for use in Taiwan

• Industry Nine Hydra: Parts are nearly impossible to find in Taiwan
• Chris King: Expensive parts, requires special tools

Summary

The choice of hub ratchet system often affects your everyday riding experience more than your choice of carbon frame. A fast-engaging ratchet lets you feel a more direct response every time you accelerate or change cadence. But when choosing, don’t focus on engagement angle alone — ease of service and parts availability matter just as much. In Taiwan, DT Swiss Star Ratchet is the most well-rounded choice, balancing performance with practicality.

Related Reading

• Rear Hub Ratchet Maintenance: Keep Your Hub Sounding Crisp
• The Mark of Swiss Quality: Why DT Swiss Hubs Are the Industry Standard
• Understanding Hub Engagement: 36T vs 54T vs Instant Drive
• Freewheel vs Freehub: A Complete Breakdown of the Differences