BackRack S

Turn your bike into a pack mule with this sturdy, tubular aluminum rear rack. Designed to mount to the eyelets already built into your frame, the Back Rack S is fully compatible with Trek's Interchange line of accessories and fits road bikes under 54cm and hybrid or mountain bikes under 50cm.


$39.99 - $44.99


  • Designed to fit mountain and hybrid bikes (18" and under) and road bikes( 54cm and under). Also fits up to 2.1" 29er tires
  • Compatible with both Interchange and standard trunk bags
  • Compatible with Interchange, Interchange Transit and traditional panniers
  • Taillight Plate allows for 50mm and 80mm spacing lights, reflector and Flare belt clip mounting
  • Single bolt strut mounts allow maximum adjustment and easy installation
  • Unique rack geometry and extra-long tubular alloy struts allows full seat height adjustment on most frames
  • Disc version includes integrated spacer for clearance with most disc brake calipers
  • Max Weight Capacity 25kgs (55lbs)
Part No. MSRP* Model Size Interchange Color
423543 39.99 BackRack S 13-18" (33-54cm) Yes Black
425733 44.99 BackRack S Disc 13-18" (33-52cm) Yes Black

*Pricing is set by Bontrager retailers and does not include freight, import duties or taxes for retailers outside of the US.