Chain Compatibility: 9-12 Speed 1x and 2x

  • v2 VBC 2x Chainring Sets

    v2 VBC 2x Chainring Sets

    Product Details

    Released in April of 2025, our new v2 VBC (Variable Bolt Circle) 2x 12-speed compatible chainrings are compatible with Shimano and SRAM 9-12 speed 2x drivetrains.  That includes Shimano 9-12 speed 105/Ultegra/GRX/Dura Ace and 10-12 speed SRAM Apex/Rival/Red, in either mechanical or electronic versions.  They retain the Variable Bolt Circle feature that allows up to five different size inner rings to be mounted on the same outer ring, with 33 possible gear combinations across the range.  And as we always strive for when designing new products, they are backwards compatible with all White Industries MR30 series cranks and White Industries direct mount square taper cranks.

    V2 VBC 2x inner rings, outer rings, and hardware are completely redesigned and feature revised outer chainring tooth and shift ramp geometry, five shift pins, a replaceable chain catch pin, and recessed inner chainring bolts.  And now you can get them in black and silver, not to mention seven different colors of chainring nuts so you can really tie the room together.  To sum it all up: 9-speed to 12-speed compatibility, backwards compatibility with our cranks, more chainstay clearance, 33 gear combinations, and more color choices. 

    Our old 9-11 speed VBC 2x chainrings will now be referred to as “v1 VBC 2x chainrings” and will be discontinued as of April 22, 2025.  Remaining stock will be available on our website until we run out, but we will continue stocking hardware for v1 VBC 2x chainrings indefinitely.  So what do you do when you can’t get v1 rings anymore?  Just get a v2 VBC 2x chainring set; they’ll work with whatever set up you already have.

     

  • VBC v2 Outer Chainrings

    VBC v2 Outer Chainrings

    The V2 VBC (Variable Bolt Circle) outer chainring is designed for 2x 12-speed compatibility across Shimano and SRAM 9–12 speed drivetrains. That includes Shimano 105, Ultegra, GRX, and Dura-Ace (9–12 speed), as well as SRAM Apex, Rival, and Red (10–12 speed), in both mechanical and electronic configurations.

    The Variable Bolt Circle design allows up to five different inner ring sizes to be mounted to the same outer ring, offering flexible gearing without replacing your entire setup. Across the range, that provides up to 33 possible gear combinations depending on your pairing.

    The V2 outer ring has been completely redesigned with updated tooth profiles and revised shift ramp geometry for smoother front shifting. It features five integrated shift pins, a replaceable chain catch pin, and recessed inner chainring bolts for improved chainstay clearance and a clean interface.

    Like all V2 VBC components, it remains fully backwards compatible with White Industries MR30 series cranks and White Industries direct mount square taper cranks, however it is not compatible V1 inner rings. For a complete set you will need a V2 inner ring and hardware. 

    Available in black and silver.

  • VBC v2 Inner Chainrings

    VBC v2 Inner Chainrings

    The V2 VBC (Variable Bolt Circle) inner chainring is designed for Shimano and SRAM 9–12 speed 2x drivetrains, including Shimano 105, Ultegra, GRX, and Dura-Ace (9–12 speed) and SRAM Apex, Rival, and Red (10–12 speed), in both mechanical and electronic configurations.

    As part of the VBC system, this inner ring mounts to a compatible VBC outer ring, allowing multiple inner ring sizes to be used with the same outer ring. The system supports up to five different inner ring sizes and offers as many as 33 possible gear combinations across the range.

    The V2 inner ring has been completely redesigned with updated tooth profiles and shift ramp geometry for improved shifting performance. It features refined machining details to work seamlessly with the V2 outer ring, including compatibility with five shift pins and a replaceable chain catch pin when paired as a complete set.

    Like all V2 VBC components, this inner chainring is backwards compatible with all White Industries MR30 series cranks and White Industries direct mount square taper cranks, however it is not compatible V1 outer rings. For a complete set you will need a V2 outer ring and hardware. 

    Available in black and silver.



  • MR30 TSR 1x Chainrings

    MR30 TSR 1x Chainrings

    Product details

    TSR (Tall-Short-Ring) 1X chainrings are designed to work with 8-12 speed 1X drivetrain systems.  The tall/short tooth profile helps prevent the chain from falling off the ring when riding through rough terrain and is a must on 1x drivetrains, but is also compatible with singlespeed drivetrains. Made in our shop from 7075-T6 aluminum (48-52 tooth rings are 6061-T6).

     

  • Square Taper ENO 1x TSR Chainrings

    Square Taper ENO 1x TSR Chainrings

    Product details

    Square Taper ENO 1x TSR (Tall-Short-Ring) chainrings are designed to work with all 8-12 speed 1X drivetrain systems.  The tall/short tooth profile helps prevent the chain from falling off the ring when riding through rough terrain and is a must on 1x drivetrains, but is also compatible with singlespeed drivetrains.  Made in our shop from 7075-T6 aluminum (48 tooth ring is 6061-T6).