2022 Session 29 Idler Pulley 4.5mm Spacer

Trek proprietary suspension hardware.<br /> - Designed for Session 29 2022<br /> - Use with the Trek Session 29 2022 Idler Pulley 3.5mm grey spacer<br /> - Use with the Trek Session 29 2022 Idler Pulley 0.5mm Washer<br /> - Intentionally black and grooved to aid in disambiguation from grey spacer<br /> - Swap orientation of spacers to match different brand crank/chainrings