The engineered foam insert mounts inside a mountain bike tire and divides the inner volume of the tyre in half

combined with perfect pressure distribution in the sitting area

Fits Sram brake & Shimano shifters: SL-M9000-I

Rubber compound is extremely tacky

BOX One Prime 9 Speed Chain - Black - 126 Links - 9 Speed Virtual Parent The engineered foam insert mountsThe Box One 9 speed chain is BOX's best performing chain in a 9 speed package. This chain receives a dual coating in both nickel plating and DLC to boost hardness, wear resistance, and slickness. The Prime 9 chain also benefits from chamfered edges, solid pins and solid plates to keep things durable. Who's this item for: Recommended for use with the Box One 9 speed drivetrain but will work with any BOX 9 speed drivetrain. Number of gears: This chain