Pirelli Cinturato Gravel M Tire - 650b x 45 Tubeless Folding Black Model=Helix SL The CeramicSpeed BB30 bottom bracket

The CeramicSpeed BB30 bottom bracket offers bearings with extremely low friction improved power transfer and a service life that far exceeds traditional steel bearings

Double-butted tapered and shot-peened AL-6066 construction

5" Manufacturer Spec ERD (mm) 545 Rim Material Carbon Rim Width (Internal) 30 Tire Type Tubeless Ready Valve Presta Wheel Size 27

Works for front or rear

preventing slippage

Pirelli Cinturato Gravel M Tire - 650b x 45 Tubeless Folding Black Model=Helix SL The CeramicSpeed BB30 bottom bracketPirelli Cinturato Gravel M Tire 650b x 45 Tubeless Folding Black. The Cinturato Gravel M (Mixed Terrain) is a gravel specific tire designed for mixed terrain where the surface varies between compact and unstable terrain and all intermediate types. The tread consists of knobs with average height and spacing to guarantee excellent performance on a wide range of terrains. SpeedGRIP Compound adds features of mechanical resistance and chemical grip without