Sprocket Cluster and Cassette

Wide gear range at a competitive price and weight

Excellent, cost-effective solution for extending your 1x range

Eleven-speed cassette that fits 10-speed freehubs

Wide spread titanium-toothed cassette

Increase the spread of gear ratios on your mountain bike

Clever ceramic/aluminium one-piece gearing

Lightweight nine-speed cassette

Staggeringly lightweight cogs

For 2008 the only change to the Centaur sprockets is the addition of 'macro' spacers

While not strictly part of the Tiagra line, this all- steel cassette would usually accompany this groupset, though you can save weight by fitting the 9-speed version of the Ultegra cassette that uses an aluminium cradle and costs £32.95.

The SRAM OpenGlide cassette uses an aluminium holder that retains steel cogs and is a radical design that omits one tooth on every cog to aid smooth shifting. We experienced an intermittent problem with chain