The ROCKY KOM 28A rims are produced using an aerospace aluminum alloy 20% more resistant and more rigid than the best aluminum alloy used for rims.
This allows to obtain lighter rims, with superior mechanical characteristics.
Rims: ROCKY KOM 28A 29er, internal width 28mm
Hubs: Carbon-Ti X-HUB MTB SP 91g (112g RS-1) + 185g.
Spokes: Alpina Blade HyperLite.
Nipples: Pillar DSN ergal.
Number of spokes: 28/28.
Maximum bike system weight: 115kg (rider, bike, clothing and backpack / bags)
Wheelset weight: 1.395g.
The sales kit includes:
- ROCKY KOM 28A / Carbon-Ti X-HUB SP aluminium MTB wheelset.
- 3 Alpina Blade HyperLite spokes.
- 3 spare DSN nipples.
- Tubeless tape installed.
- Barbieri Carbonaria valves installed.
The ROCKY KOM 28A rims close the performance gap between a carbon and an aluminum, with a low weight that's competitive with most carbon rims with these dimensions.
Our aluminum alloy is produced and drawn in Germany and wisely worked in Italy, where the rim is created by a straight bar, then subjected to the Shot Peening process which reduces the surface tensions of the material due to the processing, improving fatigue resistance and durability, and finally anodized and laser etched.
Rim features:
ROCKY KOM 28A 29er
This is built for cross country.
The asymmetric design allows to remarkably reduce the spoke tension difference between the two sides of the wheel, with a big advantage of lateral stiffness and stability.
The special inner profile makes the rim easily tubeless convertible using specific valves and tape, not included in the sales kit.
Matt black anodized aluminium 6000 T6
Aeronautic Surface Treatment (AST) eliminates surface tensions of the material, increasing the resistance.
The asymmetric design allows to remarkably reduce the spoke tension difference between the two sides of the wheel, with a big advantage of lateral stiffness and stability.
Hookles design
Suggested tubeless tape width: 29mm
Max pressure: 3.0 Bar
Tubeless ready
Height: 20mm
Width: 31mm
Internal width: 28mm
Number of spokes: 28
Hub features:
CARBON-TI X-HUB Boost MTB SP (Straight Pull)
Made in ergal 7075
Internationl Standard 6 holes rotor fixing
Sealed bearings: 2 front, 4 rear
Ergal cassette body, with 4 pawls and 56 P.O.E. (Point Of Engagement)
Front hub axle type: Boost 15 x 110
Rear hub axle type: Boost 12 x 148
Spoke type: Straightpull
Colors: Black
Weight: 91g (112g RS-1, 89g Lefty 2.0) + 185g
Spoke features:
Made in Italy by Alpina
ALPINA BLADE HYPERLITE offer a significant weight saving with no loss of resistance, stiffness of the wheel and durability of the spokes
Section: 2.0-0.9/1.6-2.0mm (bladed section is 0.9 x 1.6mm)
Black colour
Every wheelset is supplied with 3 spare spokes/nipples
Nipples: DSN ergal
Not supplied with quick releases
Our wheels are built by hand in house by highly specialized personnel.
The Bikeonline staff uses the best professional tools on the market into each step of the wheelbuilding process. The P&K Lie truing stand is one example, it allows us to check perfect truing through precise decimal comparators (0.1 millimeters accuracy).
We build most of the tools we use, to fit the level of our builds, which require a high accuracy.
The use of different tensiometers as Park Tool, Pillar and DT Swiss allows us to reach the correct tensions of every spokes.
Each wheel is pre-stressed by hand to ensure that nothing has been settling during the early stages of use and that the spoke tension remains constant for a long time even under very high loads.
This product is to be considered produced on request / on order, due to the high customization needed. It is therefore not possible to use the right of withdrawal or the cancellation of an order already confirmed.
See "Terms and conditions of use". Advance payment is required on this product.
