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Rotor Aldhu kettingbladen + R9100 coverset Chainring

Crank Type
Number of teeth
Recommended combination
£145.00 £20.70 discount
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  • Free tracked delivery
  • Trustpilot review 9.3 out of 47.706 reviews

30 Day Satisfaction Guarantee

For this product we offer our exclusive 30 day money-back guarantee. This means that you can try out the product for 30 days. Not satisfied? Then you can return the product and get a refund, even if you have used and tested the product. You have to pay for the costs for returning the product though.

Pros & Cons

  • You can mount your Rotor chainrings on a Shimano crankset at once.
  • No need to buy a complete new crank set.
  • An original chainring is the best.


Brand Rotor
BCD 110 mm
Number of gears 11 speed
Number of bolts4
FitShimano / Rotor Aldhu 3D+
Shimano CranksetDura Ace R9100


The Rotor Aldhu chainrings + R9100 cover set is a good combination to smoothly connect your Rotor chainrings to the Shimano R9100 crankset. The Rotor Aldhu chainrings are equipped with an asymmetrical fit in a 110 mm stitch. The original Shimano chainrings are thickened at the connection and the Rotor covers are made to eliminate that difference. Do you have a Shimano R9100 crank set and would you like to drive with oval chainrings? Then this is the product you need!

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Delivery includes

• Rotor Aldhu Q-ring R8000 / R9100 Double Outer ring
• Rotor Aldhu Q-ring R8000 / R9100 Double Inner ring
• Rotor Shimano Dura Ace 9100 Cover Set

Frequently bought together

Rotor Aldhu Q-ring R8000 / R9100
£44.80 From £40.80
30 Day Satisfaction Guarantee

Related products

Rotor Aldhu kettingbladen + R9100 coverset Rotor Q Rings Oval DM ALDHU 3D+ Campagnolo 50T Chorus / Record / Super Record 2011-2014 Rotor NoQ DM ALDHU 3D+
Rotor Aldhu kettingbladen + R9100 coverset Rotor Q Rings Oval DM ALDHU 3D+ Campagnolo 50T Chorus / Record / Super Record 2011-2014 Rotor NoQ DM ALDHU 3D+

1 review

1 review
Crank Type Double / Semi-compact / Compact Double / Semi-compact / Compact Compact Double / Semi-compact / Compact
BCD 110 mm Spiderless 110 mm Spiderless
Number of teeth 34 / 36 / 39 / 50 / 52 / 53 34 / 36 / 39 / 50 / 52 / 53 50 34 / 36 / 39 / 50 / 52 / 53
Number of gears 11 speed 11 speed 11 speed 11 speed
Colour Black Black Black
Number of bolts 4 5
£145.00 £163.20 £126.00 £162.30
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10 / 10

ALESSANDRO, 24 August 2018

kit molto bello

ottima precisione e resa estetica


  • estetica
  • precisione


  • costo

All specifications

Detailed product description

The thoughts behind the Rotor Q-Ring chainring are clear: each pedal movement has a 'dead center'. This is the moment when your cranks sit vertically. At this point there is no possibility to keep pressure on your crank/pedals which makes you want to get beyond this point as fast as possible. Rotor Q-Rings have less teeth on its dead center which makes you go faster past this point. The next thing that happens is that you feel maximum resistance, at this point you can get maximum power out of your rotation. With this technology you will pass your dead center faster which ensures less power loss before you point of maximum power. This results in an efficient pedal movement, and less fatigue in your muscles.

The technology behind the rotor is characterized by efficiency. Rotor believes in fact that its products are initially not so much 'faster' but it's mostly the efficient pedal movement which improves the actual net time.

Several scientific studies have proven the positive effect of Rotor Q-Rings chainRings. Perhaps even the best proof is the many victories achieved in the pro peloton on Rotor Q-Rings / QXL-Rings.

Manufacturer specifications

Usage: Road, Triatlon, Gravel
Material: 7075 T6 aluminium
Technology: OCP system
Fit: Direct Mount
Verhouding: 53-39, 52-36, of 50-34
Compatibility crank: Shimano Dura ace R-9100, Ultegra R8000, Rotor ALDHU 3D +
Compatibility chain: 9x, 10-speed or 11-speed
Ovality: 12.5%, adjustable to 1 °.
Colour: Black