ROTOR REX 2.1 MTB BOOST CRANKS
With a growing demand, ROTOR is committing to a separate mountain bike crank line named “REX”. The additional line, with its own designation and design will help to clearly distinguish the ROTOR MTB from the road crank line. The new REX MTB cranks are based on the same successful “Trinity Drilling System” technology as all ROTOR cranks, which helps reduce weight and maximize stiffness.
The REX 2.1 crank, the first number indicates the level, 1 being the highest, and the second number indicates the number of rings, in this case it is 1 single chainring, the new QX1 ring.
UBB30 axles ensure maximum frame compatibility, and cranks are available in several arm lengths including most common 170, 172.5 & 175mm. In addition, REX 2 cranks are manufactured in 7075 alloy, making them even more durable.
Rotor Rex 2.1 available from Velotech Services