Pebbles
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CeramicSpeed
Roller CeramicSpeed Sram 11v coated 1x; force 1, rival 1, apex 1 titanium
£443.63
£411.25
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Elvedes
Bicycle derailleur pulley set + 1x14 ceramic hybrid bearings Elvedes Sram Red/Force 1x12
£68.34
£51.01