Fits inside handlebars with 15

Allows you to connect your laptop or desktop to ANT+ trainers and accessories

Rear window ventilation

WT: Wide Trail casing used on 2

Shimano TIAGRA CN-4601 10-Speed Chain Silver closeout Fits inside handlebars with 15Super Narrow Hyperglide (HG) series 10 speed compatible directional chain, recommended for Tiagra drivetrainsChain uses a directional design with specifically shaped inner and outer plates to optimise shifting over the chainset and cassetteOuter plate design has been developed to reduce the chance of chain suckThe inner plate has been developed for better contact with gears providing smoother shifting under high load, giving efficient pedalling,