Rotor Latest Model.... Rotor ALDHU Q-Ring. Q RINGS BCD110X4 12-11S ROTOR Q Rings BCD110x4 12-11s. Q RINGS BCD110x4 12-11s oval chainrings compatible with all ROTOR cranks using BCD 110x4 spider and INspider power meter in combination with Shimano® 2x12s or 2x11s groupsets. In addition, these chainrings are also compatible with Shimano® Dura-Ace® FC-R9200-P, FC-R9200, FC-R9100 and Ultegra® FC-R8100, FC-R8000 cranksets, offering fast and precise shifting while keeping weight very low. Q RINGS oval chainrings allow you to pedal more efficiently, taking advantage of the maximum power of your pedaling and reducing the stress on your knees. Q RINGS offer a healthier pedaling. NEW ALDHU 4 BOLT Q RINGS , they also fit DuraAce 9100, Ultegra R8000 Shimano cranks 110 BCD available from Velotech Services. All ROTOR Q-Rings are purchased as single rings, allowing you to pair them up as desired. However we recommend the following pairings for 110 BCD Shimano 4 bolt: 50/34, 52/36, 53/39. ROTOR Q-Ring chainrings for the Aldhu modular crank system in two versions. This can either bolt to the Aldhu 110x4bcd spider or Shimano-compatible 110x4 cranks, 9100 and R8000 series. When you combine these rings with the Aldhu spider, you can dial the rings into OCP (Optimal Chainring Position) #1-5. If you combine these rings with a Shimano or Shimano-compatible spider, you’re locked into OCP #3, This position is the most commony used OCP, applicable to over 90% of riders. ROTOR Q-rings for Aldhu cranks and Shimano R9000 R8000 R7000,6800,5800 chainrings. Rotor Q-Ring outer chainring. Size 52T Outer Q-Ring. For all shimano 110x4Arm crank compatible. Free pos west.m. Sabah sarawak add Rm15. Tel:012-419 8933