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Rotor Rex 1.1 X1 76BCD Chainset
The Rotor Rex 1.1 X1 76BCD Chainset uses the Trinity Drilling System technology which helps reduce weight and maximize stiffness. Rex is the new mountain bike crank line from Rotor, this additional line, with its own designation and design will help to clearly distinguish the Rotor MTB from the road crank line. The REX 1.1 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 Narrow/Wide chainring. UBB30 (30mm) axle and ROTOR bottom bracket systems ensure maximum frame compatibility. This MTB chainset is available in 3 arm lengths including 170, 172.5 & 175mm. REX 1 cranks are manufactured in 7055 alloy, making them even more durable, stiffer and lighter than other cranks on the market. Rotor Rex 1.1 X1 76BCD Chainset Features Trinity Drilling System technology The lightest crank in the mountain bike line is built around a new 7055 alloy Available with Narrow/Wide QX1 or NOQ rings Compatible with singlespeed and 1 x 10/11 groupsets