Rotor REX 2.1 XC1 without plate with 4-prong spider and 172.5 mm crank arm length. Does not include plate or bottom brackets.
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The Rotor REX 2.1 XC1 crank is the middle ground between the REX 3 and the performance-orientated REX 1 crank, since it features drilled cold forged crank arms and a 30mm aluminium UBB axle. It offers the perfect balance between low weight, rigidity and durability.
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