These (Shimano option) are 11sp compatible wheels, which means, and thanks to the supplied spacer, you can use these on either 10 or 11 speed Shimano/SRAM systems.
Carbon - TC-35
Fast Forward (FFWD) use High-Tensile TC-35 carbon for the majority of the lay-up. This gives the rim a very high strength with sufficient stiffness to cope with hard application of the wheels. So, rather than use a stiffer, but more brittle carbon type, they chose durability over ultimate stiffness. In some lay-ups they add some higher modulus sheets to increase stiffness locally.
FFWD actually use multiple layers of different types of carbon. Only the outer layer is made from a 3K weave. Underneath this layer are layers of UDF (Uni-Directional Fibre) sheets. A mixture of different angles to resemble a uniform material. Because carbon fibre can handle tension very well, they have to mix up the layers to make the rim stiff and strong enough.
DT Swiss 240s Hub
The hub that defines Swiss precision and performance. The 240s hubs have been winning Grand Tour races and local crits for many years. The legendary Ratchet System® drive system will last for many years and provide all the performance needed to ride in a pro peloton or on your local shop ride.
CRP - Crash Replacement Policy
If you are unlucky enough to damage your FFWD wheel in an accident or by any means that is unwarrantable even outside the standard 2 year warranty, you may return your damaged wheel to FFWD who will replace your damaged carbon or alloy rim for HALF the regular price plus 50 euro's for new spokes and rebuilding by hand. For more information on this scheme please visit the Fast Forward website.