Shimano Tiagra CN-4601 Chain drumbeat21-1749 Our Big Bore Hybrid offers

Our Big Bore Hybrid offers up to 245% higher air flow than traditional Presta valves thanks to the straight through bore design

and a TPU cycling cap-style visor that accents your style without compromising ventilation

3 is constructed from durable powder coated heavy-gauge steel and is manufactured

Flashing mode - 5hrs

- Seals porous tyres and bead/rim gaps

Shimano Tiagra CN-4601 Chain drumbeat21-1749 Our Big Bore Hybrid offersSuper Narrow Hyperglide (HG) series 10 speed compatible directional chain, recommended for Tiagra drivetrains Chain uses a directional design with specifically shaped inner and outer plates to optimise shifting over the chainset and cassette Outer plate design has been developed to reduce the chance of chain suck The inner plate has been developed for better contact with gears providing smoother shifting under high load, giving efficient pedalling,