Rotor 3D+ 165mm 110 BCD Crank Arms


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Details Rotor 3D+ 165mm 110 BCD Crank Arms

  • Weight: 475 g.
  • 165mm.
  • Bottom bracket not included.
  • 100% CNC, extruded, 7055 crank arms with trinity drilling. Black polished crank with laser graphics and red axle bolts.
  • Q-Factor 148 mm, Chain line 43,5 mm.
  • Ultra stiff 30mm Aluminum UBB axle; compatible with BSA, ITA, BB86, BB30, BB30 PF, BBRight and BB386 Evo frames.
  • For all 110 BCD 10 & 11 speed, oval & round chainrings.

Download instruction manual.


As the lightest crank in the road line, the new Rotor 3D+ 110 BCD Crank Arms takes advantage of a new 7055 alloy and an entirely redesigned structure based on TDS technology to reduce weight while maintaining rigidity. The 30mm axle with UBB30 technology makes 3D+ compatible with almost all bikes, whether they are designed for 30mm axles or not.

The 3D+ uses a refined and lighter version of the trinity drilling system hollow construction, leaving behind a structure similar to a box-girder bridge. This allows the crank to resist rotational and bending forces better than a simple hollow tube construction can.

The 100% aluminium construction of the 3D+ forgoes the use of trendy materials and stays true to its goal of delivering unrivalled performance at its weight level. By doing so it offers aluminium stiffness at a lower weight than most high end carbon cranks! With the use of our Trinity Drilling System to hollow out the crank arms and the application of our super stiff and ultra-compatible UBB30 axle, it offers a new level of performance for quality bike builds of any brand, era and type.

ROTOR's bombproof trinity drilled crank arms resist bending and twisting forces better than classic hollow tube crank designs can. ROTOR’s crank arms are stiffer than the competitions forged products due to our Trinity Drilling System. The machined out portion can be seen in red. This process drills three full-depth holes from axle to pedal, leaving behind a boxtrellised structure (similar to box bridges). This gives our crank arms superior rigidity and an exceptional stiffness-to-weight ratio.

About Rotor

Rotor Component Technologies was founded in the School of Aeronautical Engineering in Madrid in 1995. The designers decided to stablish a company to complete this product development and start a business venture. The early version of the ROTOR System became available in 1998, being manufactured by the Spanish high end component manufacturer.

In 2001 they launched the RCK so all cyclists could take advantage of the biomechanical benefits offered by ROTOR System using a conventional bicycle frame. In 2015 the company took a huge step by introducing the oval shaped chainring.

The aim of the company is to offer solutions for cyclists and to improve the performance of bicycles with help of high technology. The cyclists find problems and propose innovative solutions. They have repeatedly demonstrated that with technologies like the ALMA (Appropiate Lightweight Material Aplication) and the CCC (Closed Clamp Concept), the bicycle market can be revolutionized by fresh and powerful ideas.

Professional cyclists, world champions, teams of the UCI and cycling enthusiasts use the ROTOR products in their competitions and trainings. The evolution in the products comes from information provided by cyclists themselves.

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