Problem Solvers Chain Tensioner Two-Pulley Adjustable Chainline

Problem Solvers Chain Tensioner Two-Pulley Adjustable Chainline. This Problem Solvers Two-Pulley Tensioner is for use with single-speed drivetrains.

Two-pulley tensioner

Adjustable chainline

18t maximum cog size

CNC-machined AL-6061-T6

Not for use with fixed-gear drivetrains or coaster brakes