ROCKYROAD 39C DISC Hookless Tubeless Ready
UD carbon, matt finish with shiny decals
Internal width: 21mm
The special layering of the T800 carbon fibre sheets gives ROCKYROAD rims a high lateral stiffness, while ensuring a high shock and vibration dampening capacity, combined with extremely low weights.
Hookless: no bead hook on the internal sidewall, it allows to position the carbon fibres in a continuous manner, without interruptions that would jeopardize the strenght in a part of the rim that's one of the stressed. WARNING: Hookless rims require the use of Tubeless Ready tires only, with or without tubes. Refer to the instruction manual of the tire manufacturer to verify compatibility with hookless rims.
Asymmetric design: ensures a significant increase of stability and lateral stiffness of the wheel thanks to a more balanced spoke tension between the two sides of the wheel
Tubeless ready: tubeless convertible with specific tape and valves
ROCKYROAD rims must pass the stringent tests EN 14766 and ED 14781. These tests have been designed to ensure the strength and durability of individual parts as well as of the bicycle as a whole, demanding high quality throughout and consideration of safety aspects from the design stage onwards.
ROCKYROAD rims are intended for Road use.
Crash replacement policy: in case of accidental break of a ROCKY rim, not covered by warranty.
CARBON-TI X-HUB SP Center Lock
Made in ergal 7075
Center lock 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 12 x 100
Rear hub axle type: Boost 12 x 142
Spoke type: Straightpull
Weight: 90g + 191g
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)
Every wheelset is supplied with 3 spare spokes/nipples
Nipples: DSN ergal acid green, black, blue, gold, green, orange, red or silver
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.