The new Vision Metron SL Wheels are their the top level wheels. The last version was released four years ago, and the new SL uses the same asymmetric rim profile with offset spokes to maximize wheel stiffness. They look similar, but the details are drastically different. The rim gets a revised layup to save a few grams and an improved braking surface with a woven exterior layer that’s laser treated to remove surface resin and roughen it for better friction. They say with the included SwissStop pads the stopping power is on par with alloy rims. We rode a set and they are indeed solid stoppers.
The hubs get a new shell and upgrade from standard cartridge bearings to angular contact bearings to reduce side loaded drag. It goes to a one-piece preload adjustment collar that runs all the way up the side. The driveside flange diameter is taller, too, to shorten the spokes and improve triangulation. The pawls contact a new engagement ring with more teeth for quicker engagement, too.
The new wheels will come in 40, 55 and 81 millimeter depths in tubular and clincher. There’ll also be a disc brake version with the 40mm depth that’ll have 12mm thru axle and QR compatibility. Rim widths are 17mm internal/25mm-25.5mm external for the two shallower depths, and the 81mm is 16mm/24.8mm. Tubulars are 24.8mm and 24.3mm, respectively, at the outside of the brake track.
The hubs are entirely new, with the visual differences at the rear thanks to its taller driveside flanges. But there’s even more hiding under the surface. The design is called PRA (Preload Reduction Assembly) and uses a clamping collar that limits the side load you can put on the bearings, so you can’t over tighten it and create drag. This new collar is a larger, one-piece cone shaped thread-on unit, compared to the previous ring-shaped one.
The hubs switch to angular contact bearings, with larger-than-before bearings on the non-drive side.
Flange diameter grows from 47.9mm to 60mm at the spoke mounts, and they switch to 3x lacing to make the wheels even stiffer.
Lastly, the spoke mounting locations get pushed even wider, as do the bearings inside the freehub body, which also aid complete system stiffness. The freehub body upgrades to independent springs for each of the three pawls (versus one large spring ring for all pawls), which helps reduce drag. The front hub’s shell was reshaped, too, which they say shaved half a watt of drag in the wind tunnel, and it’s 18g lighter. Incremental gains. Rear hub weight is about the same despite growing in diameter where it counts. Pricing and weights are:
- Metron SL 40 Rim Brake Clincher: 2056.99 – 1490g
- Metron SL 40 Rim Brake Tubular $2056.99 – 1330g
- Metron SL 40 Disc Brake Clincher: 1999.99 – 1580g
- Metron SL 40 Disc Brake Tubular: $1999.99 – 1420g
- Metron SL 55 Clincher: $2068.99 – 1540g
- Metron SL 55 Tubular: $2068.99 – 1430g
- Metron SL 55 Disc Brake Clincher: $TBD – 1630g
- Metron SL 55 Disc Brake Tubular: $TBD – 1520g
- Metron SL 81Clincher: $2108.99 – 1820g
- Metron SL 81 Tubular: $2108.99 – 1460g
Rim brake models ship with the black pads for dry weather, but they recommend the yellow pads for wet weather.
The new Metron Carbon Stem is a full monocoque carbon part…which is almost identical to the FSA stem of the same level, so here’s the deal. Vision is aimed at the elite road racer with parts that are more aerodynamically concerned. Case in point, the new Vision stem gets a Metron level that uses a different faceplate to differentiate it from the more open FSA K-Force model. As for hierarchy, here’s how the two lines break down: Vision has Metron (top), then Trimax, then Team (bottom). FSA has K-Force, SL-K, etc. Think of those like Dura-Ace Di2, then DA/Ult Di2, then Ultegra, and on down. In general, the Vision brand is moving more toward being their primary branding/naming for high end road, triathlon and time trial, and more focused on the accessories and cockpit parts. The FSA brand will be primarily used for drivetrain parts across all types of bikes, and the mountain bike cockpit stuff.
This stem comes with ti hardware, a 1-1/4″ steerer clamp opening and an adapter to size down to the more common 1-1/8″. Claimed weight is 150g for 100mm, also available in 110/120/130 lengths, all with a -6º rise.
New Vision Metron seatpost gets 0mm, 20mm, 25mm and 32mm setback options that uses a totally new design with an aero shaped user section. The head design is called CAB, for Carbon Arc Body, and allows the clamp section to rotate along the curved arc of the head. The Di2 battery insert is now plastic rather than alloy to shave grams. They come in 400mm lengths and 27.2/31.6 diameters. Weights around 220g-228g depending on size.