Information

Discontinued as of April 22, 2025

Remaining stock of v1 VBC 2x inner and outer chainrings will be available on our website until we run out.  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.

v1 VBC (Variable Bolt Circle) 2x Inner Chainrings and will fit either style of v1 VBC 2x Outer Chainrings: for the MR30 cranks or ENO/Square Taper Road cranks.  v1 VBC 2x “sets” are no longer available and have been superseded by the “v2 VBC 2x Chainring Sets” which add 12-speed compatibility.  If you want a v1 VBC 2x “set” you will have to build it yourself by purchasing the parts separately:

• v1 VBC 2x Inner Chainring (on the Chainring page)
• v1 VBC 2x Outer Chainring (on the Chainring page)
• v1 VBC 2x Chainring Hardware Set (on the Chainring page)

Features

• Compatible with White Industries cranks, v1 VBC 2x outer chainrings, and v1 VBC 2x Chainring Hardware Set only
• Chainrings are made from  U.S. sourced 7075-T6 aluminum
• Available in black anodize only
• Hardware available separately (see Chainrings>v1 VBC 2x Chainring Hardware Set)

Specs

• Inner v1 VBC 2x rings are engraved with “Inside”, which should face toward the frame
• Compatible with 9, 10, and 11 speed drivetrains only
  • 12 speed chains are too narrow and will fall/jam between the rings
• We recommend Shimano front derailleurs only for best shifting performance
•  To ensure proper shifting we recommended inner/outer chainring combinations of:
  • A difference no smaller than 10 teeth
  • A difference no bigger than 20 teeth
• Inner chainrings are available from 24t to 38t in 2 teeth increments
• Outer chainrings are available from 38t to 52t in 2 teeth increments

Torque

• VBC bolts: 7 ft lbs (10 Nm)

Tech Docs

• VBC v2 Chainring Assembly Instructions
• VBC v1 and v2 Chainring and and Hardware Identification Guide