Brand: TREK
Reference: W5251169
Trek patented suspension hardware.
Product details
Designed for the 2022 Session 29.
Use with Trek Session 29 2022 Idler Pulley with 3.5mm Gray Spacer .
Use with Trek Session 29 2022 Tensioner Pulley 0.5mm Washer.
Intentionally black and grooved to help disambiguate the gray spacer.
Change the orientation of the spacers to match cranks/chainrings of different brands.
Thickness: 4.5mm
Inner diameter: 12 mm
Material: Aluminum