Origin-8's Alloy Ramped Chainrings are CNC-machined in the USA out of tough, light and durable 6061-T6 aluminum and are compatible with 8-, 9- and 10-speed drivetrain components. They have ramped teeth and are pinned for superior shifting and durability, and feature an attractive and corrosion-resistant black anodized finish.

Origin8's Thruster 104mm BCD 4-bolt chainrings are great for MTB, Boost, and Fat applications. Their Narrow/Wide tooth design provides chain retention on 1x systems, and they are 10, 11, or 12 speed compatible. - Forged and hard anodized AL6061-T6 alloy construction - BCD: 104mm 4-Bolt - Type: 1x - Chain Compatibility: 10/11/12s - Tooth Type: Narrow/Wide

Origin-8's Alloy Ramped Chainrings are CNC-machined in the USA out of tough, light and durable 6061-T6 aluminum and are compatible with 8-, 9- and 10-speed drivetrain components. They have ramped teeth and are pinned for superior shifting and durability, and feature an attractive and corrosion-resistant black anodized finish.

Narrow/Wide tooth design for chain retention on 1x systems - 10 or 11 speed compatible - Mud clearing channels - CNC 7075 Swiss Alloy