Rotor 3D+ MAS Road Crank
This item is "Final Sale" and cannot be returned or exchanged
This item is "Final Sale" and cannot be returned or exchanged
This item is "Final Sale" and cannot be returned or exchanged. Once the order is processed, labeled, or shipped, the order cannot be canceled.
Every item goes through quality control prior to shipping. If there are any imperfections or issues, you will be notified prior to the order being processed.
Items on "Final Sale" are for online only. These items are not at our physical stores for purchase.
Pickup currently unavailable at RA Cycles - Brooklyn
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Questions about this product?
Rotor 3D+ MAS Road Crank Info
The Rotor 3D+ MAS Road Crank was built for riders who want precise control over their chainring positioning — specifically those running Rotor's oval Q or QXL rings. MAS stands for Multiple Adjust Spider, and it's what makes this crank distinct: the five-arm spider is drilled with multiple mounting positions, giving you more OCP (Optimum Chainring Position) adjustment options than a fixed spider allows. If you're dialing in an oval ring setup, that flexibility matters.
The arms are forged from 7055 aluminium alloy, then CNC-milled on both the exterior and interior. Rotor's Trinity Drilling System runs three hollow channels through the length of each arm — a design that strips weight without sacrificing the lateral stiffness you need when you're putting real power down. The 30mm thru-axle is compatible with Rotor's UBB system, which spans English-threaded, Italian, BB30, PF30, BBright, BB386EVO, and BB86 bottom bracket standards. One crank, multiple frames — no standard-chasing required. The spider is available in 110mm BCD, suited to compact double chainring setups.
Rotor 3D+ MAS Road Crank Specs at a Glance
- Material: Forged 7055 aluminium alloy, CNC-milled interior and exterior
- Spider: 5-arm, 110mm BCD
- Crank arm lengths: 170mm, 175mm
- Bottom bracket compatibility: UBB system — English, Italian, BB30, PF30, BBright, BB386EVO, BB86
- Axle diameter: 30mm thru-axle


