SPEED is synonymous with competition, it represents maximum performance, when the chronometer is the only judgment of a racing bike ride. It is a name born for the professionals of the World Tour, who choose them in the tubular version, and for all those who use these wheels for racing.
With these premises, what characteristics should a SPEED version have, not tubular, 40 mm high, and therefore ideal in more situations?
Simple: the best of everything. Hence the SPEED 40 DB, 2-Way Fit (tubeless) + disc brake.
SPEED 40 DB is a disc brake wheelset that leaves you speechless, a cutting-edge rim, new in shapes and technical concepts. Wider, 26.5 mm, with an aerodynamic shape with a pronounced 8 mm nose and a "twill" carbon weave designed to optimize the elastic response of the rim.
It was a long job of refining the aerodynamic profile: from simulations to tests with prototypes, to choose the best design taking into account the crosswind and turbulence created by the disc, and a long test work to choose the best materials to be used. merge in this project.
Any ALTRA ideas to understand the ANIMA of this wheel? Here they are: 2-Way Fit, therefore tubeless from birth, with a 19 mm wide channel.
Bearings: USB, ceramic, cone & cap. And, of course, the oversized hub flanges to take advantage of all the advantages that the disc brake brings with it.
Ultimately, SPEED 40 DB is the new benchmark for those who have chosen the disc brake and are looking for the maximum, with a racing pedigree and a perfect medium profile on most routes.
tire type | 2-Way Fit (for clincher and tubeless) |
circle diameter | 28 " |
discipline | Road / Triathlon |
ASTM category | 2 |
weight | 1470 g |
wheel material | Carbon |
rim material | Full carbon, "Twill" carbon fiber finish |
profile height | Medium |
rim height | Front and rear: 40mm |
rim width | 26.5 mm |
Internal channel width | 19 mm |
tire width | from 23 mm to 50 mm |
braking system | Disc brake |
Braking surface / brake option | AFS |
front axle compatibility | HH12-100 |
rear axle compatibility | HH12-142 |
spokes: front | 21, Two-to-one (14 left - 7 right) |
spokes: rear | 21, Two-to-one (7 left - 14 right) |
spokes: material | Double butted stainless steel |
spokes: profile | GIROed, head straight |
nipples | Aluminum |
front hub | Carbon, aluminum oversize flange |
rear hub | Aluminum, aluminum oversize flange |
bearings | USB ceramic bearings, Cone & Cap System, adjustable |
ALTRA | Plasma treatment on HG freewheel body. Aluminum axle |
Weight limit | 109 kg (Cyclist) |
freewheel versions | HG11, Campy, XDr |