The 3D24 crank impresses with forged quality and CNC-milled precision. With a 24mm axle diameter, UBB30 technology and TDS Trinity Drilling System, the 3D24 offers the perfect balance of weight and rigidity. The BCD110 Spider allows a wide range without sacrificing rigidity.
Material crank arms: aluminum (7075-T6)
Material axis: aluminum
Crank arm length: 172.5 mm
Chain line: 43.5 mm
Q-factor: 148 mm
Axle diameter: 24 mm
Compatible case width (for BSA bottom bracket): 68 mm
Bottom bracket (recommended): BSA, BB386EVO, BB86, PF30 *
* You can find a complete overview of the compatible bottom brackets and possibly necessary spacers on the rotor homepage.
– forged, machined
– suitable for oval and round chainrings (must be ordered separately)
– Compatible with 9, 10 and 11-speed drives
The Aerospace Aluminum Alloy 7075 offers outstanding physical properties for the construction of parts such as Q-Rings and REX 3 and 3D24 cranks.
Rotor CNC cranks are stiffer than the competitors’ cranks due 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.
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.
172.5 mm: CO 02-061-20010-002
– 1 x crank arm rotor 3D24, right
– 1 x crank arm rotor 3D24, left
– 1 x crankshaft rotor
– 1 x crank screw rotor
– 2 x spacers 11.5 mm
– 2 x plastic disc
– 1 x chainring bolt set rotor, 10-piece
– without chainrings
– without bottom bracket