Rotor 3D24 Compact Road Crank

The most famous 3D crank has been completely renewed and remains the benchmark. The Trinity Drilling technology and the "Closed Clamp Concept" technology make this crankset even lighter and stiffer.

  • 100% CNC machined 
  • suitable for oval and round chainrings (must be ordered separately) 
  • compatible with 9, 10 and 11-speed drives


Alu 7075

Aerospace Aluminum Alloy 7075 offers excellent physical properties for building parts such as Q-Rings and REX 3 and 3D24 cranks. 


Rotor CNC cranks are stiffer than the competitors' cranksets thanks to the Trinity Drilling System (TDS). In this procedure, three full holes are drilled from the bottom bracket to the pedal. This creates a box-like grid, similar to a box girder bridge. As a result, the cranks are extremely stiff and still lose weight, whereby an outstanding relationship between stiffness and weight is achieved. 

UBB system

The UBB System (Universal Bottom Bracket) allows Rotor to use both 24mm and 30mm axle diameter, making it compatible with almost all frames on the market.

  • Series: 3D 

  • Material crank arms: aluminum (7075-T6) 

  • Material Axis: steel 

  • crankarm length: 170.0 mm, 172.5 mm, 175.0 mm 

  • chain line: 43.5 mm 

  • Q-factor: 148 mm 

  • Shaft diameter: 24 mm 

  • Compatible housing width (for BSA bottom bracket ): 68 mm 

  • bottom bracket (recommended): BSA , BB386EVO , BB86 , PF30

  • Application: Road 

  • compatibility: 2- 

  • chainring attachment: 110 mm bolt circle, 5-arm

  • Weight: black / 172.5 mm: 528 g

  • 1 x crank arm rotor 3D24, right, with crank axle 

  • 1 x crank arm rotor 3D24, left, with crank bolt 

  • 1 x sealing ring 

  • 1 x chainring bolt set rotor, 10-part 

  • without chainrings 

  • without bottom bracket

Type: Cranksets

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