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  • Rotor Aldhu 3D+ Crank Arms
  • Rotor Aldhu 3D+ Crank Arms Bottom
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RotorAldhu 3D+ Crank Arms
$300.00

Item # RTR0032

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  • Black, 170mm ($300.00)
  • Black, 172.5mm ($300.00)
  • Black, 175mm ($300.00)
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Item # RTR0032
Description

Ultra-light cranks with modular adaptability.

Not only are the Aldhu 3D+ Crank Arms some of the lightest cranks ever designed by Rotor, but they're also equipped with Optimal Chainring Position (OCP) to suit your pedaling biomechanics with the use of Oval Q Rings. The OCP mount gives riders precise one-degree adjustments with Direct-Mount Q Rings from Rotor, also working with Rotor's Aldhu 3D+ Spider mounted to 110 BCD Q Rings. Ultimately, OCP adaptability sets the Aldhu 3+ crank system apart from others on the market by tailoring the Q Ring position to suit your individual pedal stroke for increased efficiency.

This modular crankset requires the separate purchase of Rotor's Aldhu 3D+ Spindle (30mm), as well as an Aldhu 3D+ Spider with a compatible 110 BCD Ring. You can also choose to purchase the spider and chainring attached as one if you prefer a seamless direct-mount option. And because it's designed with customization in mind, Rotor offers oval and round options in both crankset configurations to suit your particular needs.

Rotor employs CNC-machined 7055 aluminum alloy with Trinity drilling technology to produce incredibly lightweight, ultra-stiff crank arms worthy of discerning cyclists and the pros alike. In fact, the Aldhu 3D+ name is derived from a legendary climbing stage in the French Alps that earned Rotor a 2008 victory on the world's most iconic race.

  • Modular crank arms are incredibly light and stiff
  • Rotor's lightest crankset of CNC-machined 7055 alloy
  • Optimal Chainring Position with one-degree adjustments
  • Direct-Mount with Aldhu 3D+ Spindle (30mm), 110 BCD Spider
  • 110 BCD Round and Oval Q Ring options with Aldu 3D+ Spider
  • Seamless integration with Rotor Direct-Mount Rings (oval and round)
Tech SpecsWeight
Tech Specs
Arm Material
CNC-machined 7055 aluminum alloy
Arm Length
170, 172.5, 175 mm
Bolt Circle Diameter
110mm (on Aldhu 3D+ Spider)
Bolts
direct-mount to Aldhu 3D+ Spider (requires 4 bolts for chainring connection) or DM Chainrings (both Round and Oval available)
BB Type
BB30, BB386, BB86, PF30, PF4130, PF4630
Spindle
Aldhu 3D+ Spindle required (not included)
Q Factor
147 mm
Chainline
43.5 mm
Compatible Components
Rotor Aldhu 3D+ Spider, Aldhu 3D+ Spindle, DM Chainrings (both Round and Oval)
Recommended Use
cycling
Manufacturer Warranty
limited 2 year
Weight

Actual Weight

Actual weights are measured in-house by the Competitive Cyclist team.

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Grams

Oz

Black, 170mm
349g
12.31oz
Black, 172.5mm
355g
12.52oz
Black, 175mm
356g
12.56oz

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