Vision Metron TTW Disc Carbon DB Rear Wheel
Aero Performance. Race-Day Speed. Engineered to Win.
The Vision Metron TTW Disc Carbon DB Rear Wheel is built for one purpose: maximum aerodynamic performance when every second counts.
Designed specifically for time trials and triathlon, this premium rear wheel combines Vision's advanced full carbon construction with a lightweight 45mm deep structural rim and a full UD carbon aerodynamic fairing. The result is a rear wheel that delivers the aerodynamic advantages of a disc wheel while remaining lighter, more versatile and easier to handle than a traditional full disc.
Whether you're targeting a new 10-mile PB, racing an Ironman or competing at the highest level of time trialling, the Vision Metron TTW Disc Carbon DB Rear Wheel is designed to help you ride faster with greater efficiency.
Why Choose the Vision Metron TTW Disc Carbon DB Rear Wheel?
Designed for Pure Aerodynamic Speed
Aerodynamics are everything in time trialling and triathlon.
The Metron TTW has been engineered to reduce drag by combining a lightweight structural carbon rim with a full UD carbon aerodynamic fairing, allowing airflow to remain attached for longer and reducing turbulence around the rear wheel.
The result is:
- Reduced aerodynamic drag
- Higher sustained speeds
- Improved efficiency
- Faster average race pace
- More speed for the same power output
When every watt matters, aerodynamic gains like these can make a significant difference over race distance.
Full UD Carbon Fairing Construction
Unlike conventional deep-section wheels, the Metron TTW incorporates a full unidirectional (UD) carbon fairing bonded to a lightweight structural rim.
Benefits include:
- Outstanding aerodynamic efficiency
- Lower overall weight than many full disc wheels
- Exceptional stiffness
- Excellent power transfer
- Stable handling in varying wind conditions
This design offers many of the aerodynamic advantages of a disc wheel while remaining practical for a wider range of race conditions.
Lightweight 45mm Structural Carbon Rim
At its core is a lightweight 45mm carbon clincher rim providing excellent structural strength and stiffness.
Combined with the aerodynamic fairing, it creates an incredibly efficient wheel that accelerates quickly while maintaining outstanding high-speed performance.
Modern 21mm Internal Rim Width
The Metron TTW uses a modern 21mm internal rim width, designed to work perfectly with today's wider performance tyres.
Benefits include:
- Improved tyre support
- Lower rolling resistance
- Better ride comfort
- Increased grip
- More predictable handling
- Enhanced aerodynamic tyre profile
Pair it with modern 25mm or 28mm tyres for maximum performance.
Tubeless Ready
The Metron TTW is fully tubeless ready.
Running tubeless tyres provides several performance benefits:
- Lower rolling resistance
- Improved puncture resistance
- Lower tyre pressures
- Better grip
- Increased comfort
- Greater race-day confidence
Traditional clincher tyres and inner tubes can also be used if preferred.
Premium PRS Ratchet Hub
At the heart of the wheel is Vision's premium PRS Ratchet Hub.
Features include:
- Precision ratchet engagement
- Four sealed chromoly steel cartridge bearings
- Smooth rolling efficiency
- Excellent durability
- Reliable power transfer
- Easy servicing
The low-friction hub maximises every watt you produce.
Disc Brake Specific Design
Built exclusively for modern disc brake bikes, the Metron TTW uses Centre Lock rotor mounts for powerful and reliable braking performance in all weather conditions.
Whether you're descending technical courses or racing through changing weather, braking remains predictable and confidence inspiring.
Key Features
- Full carbon construction
- Full UD carbon aerodynamic fairing
- Lightweight 45mm structural carbon rim
- Tubeless Ready clincher
- 21mm internal rim width
- Vision PRS Ratchet Hub
- Four sealed chromoly steel cartridge bearings
- Centre Lock disc brake compatible
- Shimano HG (10/11/12-speed) or SRAM XDR freehub options
- Hand-built construction
- Designed specifically for time trial and triathlon racing
Why We Like It at The Endurance Hub
The Vision Metron TTW is one of those products that immediately stands out when you see it in person.
It delivers many of the aerodynamic benefits associated with a full disc wheel while remaining lighter and easier to handle in crosswinds. That makes it a fantastic option for athletes who want maximum speed without committing to a traditional solid disc.
For long-course triathlon, time trialling and fast, non-technical race courses, it's an outstanding choice.
Real-World Performance
Vision's Metron TTW has been developed using years of aerodynamic research and professional race experience.
Athletes consistently praise it for:
- Exceptional aerodynamic efficiency.
- Noticeably higher cruising speeds.
- Stable handling despite its aerodynamic profile.
- Fast acceleration.
- Smooth, low-resistance hub performance.
- Outstanding build quality.
- Excellent compatibility with modern tubeless tyres.
The combination of low weight, aerodynamic shaping and premium hub technology makes it one of the most versatile rear race wheels available.
Perfect For
The Vision Metron TTW Disc Carbon DB Rear Wheel is ideal for:
- Time trials
- Ironman racing
- Middle-distance triathlon
- Olympic-distance triathlon
- Fast TT bike builds
- Aero road bike race builds
- Riders chasing maximum aerodynamic efficiency
How Does It Compare?
Compared with a traditional full disc wheel, the Metron TTW offers:
- Lower overall weight.
- Easier handling in crosswinds.
- Excellent climbing performance.
- Outstanding aerodynamic efficiency.
- Greater versatility across different race courses.
Compared with a standard deep-section wheel, it provides significantly greater aerodynamic performance while remaining practical for everyday race use.
Frequently Asked Questions
Is this a full disc wheel?
No.
The Metron TTW uses a lightweight 45mm structural carbon rim combined with a full UD carbon aerodynamic fairing, offering many of the aerodynamic benefits of a full disc wheel while reducing weight and improving handling.
Is it tubeless ready?
Yes.
It is fully compatible with modern tubeless tyres while also supporting standard clincher tyres and inner tubes.
Which tyres work best?
The 21mm internal rim width is optimised for modern 25mm and 28mm performance tyres.
Which freehub options are available?
Available with:
- Shimano HG (10/11/12-speed)
- SRAM XDR
Is it suitable for triathlon?
Absolutely.
It has been specifically developed for triathlon and time trial racing where aerodynamic efficiency is the highest priority.
Is it compatible with disc brakes?
Yes.
The wheel uses the Centre Lock rotor mounting system.
Why Buy From The Endurance Hub?
When you purchase your Vision race wheels from The Endurance Hub, you benefit from expert advice and ongoing support.
We offer:
- Expert guidance on wheel selection
- Compatibility checks with your bike
- Tyre recommendations
- Tubeless setup advice
- Cassette and rotor compatibility support
- Professional fitting available
- Friendly after-sales service
Whether you're preparing for your first triathlon or chasing a championship qualification, we'll help ensure your new wheel is race-ready.