Rotor 2x Direct Mount Round Chainring Universal Tooth, 48/31T

Rotor 2x Direct Mount Round Chainring Universal Tooth

• Ultra-light, ultra-stiff 2x design for improved power transfer and efficiency.

• Direct mount construction saves up to 30g versus BCD110x4 setups.

• CNC-machined 7075-T6 aluminium for durability and premium finish.

• Universal Tooth® Technology compatible with Shimano and SRAM 11/12-speed chains.

• Crisp, reliable shifting with redesigned tooth profile.

• Road, gravel and triathlon ready, available in 48/31T, 50/34T and 52/36T

The ROTOR 2x Direct Mount Round Chainring (Universal Tooth) delivers our most advanced chainring technology yet and now fully compatible with modern 12-speed and 11-speed drivetrains. Engineered to achieve an exceptional balance of weight, stiffness and efficiency, it's one of the lightest and stiffest 2x chainring options available for performance-focused road, gravel and triathlon riders using compatible Rotor cranks.

Machined from a single block of aerospace-grade 7075 aluminium, these chainrings offer a significant upgrade over traditional BCD110x4 setups. Riders can save up to 30 grams while gaining noticeably improved stiffness thanks to the bolt-free, spider-free direct mount structure that creates a more direct and responsive power transfer ideal for climbing, sprinting and maintaining smooth cadence on mixed terrain.

A redesigned tooth profile ensures crisp, reliable shifting with both 12- and 11-speed chains, and thanks to ROTOR's patented Universal Tooth® Technology, the chainrings are now fully compatible with any Shimano® or SRAM® chain. Whether you're running a high-performance road drivetrain or a gravel adventure setup, you'll experience smoother engagement and more consistent chain retention.

Minimalist and avant-garde design

The refined CNC-milled construction and deep, durable anodised finish deliver a premium aesthetic that not only looks fast but is engineered to withstand demanding conditions. Clean lines, tighter tolerances and a sleeker structural layout reflect ROTOR's ongoing obsession with engineering precision.

Universal Tooth® Technology

Our patented Universal Tooth® profile provides broad-spectrum chain compatibility across 1x and 2x drivetrains, ensuring seamless performance whether you run Shimano or SRAM chains.

Lighter and stiffer

With direct integration to the spindle, this chainring system eliminates bolts, nuts and the spider reducing weight by 30 grams and significantly improving drivetrain stiffness for a more efficient transfer of power to the rear wheel.

Technical Specifications:

• Discipline: Road, Gravel, Triathlon

• Material: 7075-T6 Aluminium

• Chainring Shape: Round

• Setup: 2x

• Mounting: Direct Mount

• Sizes: 48/31T, 50/34T, 52/36T

• Groupset Compatibility: Shimano 2x11s, Shimano 2x12s, SRAM 2x11s, SRAM 2x12s (not compatible with Campagnolo)

• Speeds: 11-speed, 12-speed

• Compatible Crank Brands: ROTOR

• Compatible Cranks: Vegast / Aldhu / Aldhu Carbon