Pirelli SporTUBE Training Tube (700 x 42-50mm) D4 The G Series are the

The G Series are the lightest tubeless rims we have ever produced

Front & Rear Shift: smooth and reliable shifting

File tread grip creates a comfortable and ergonomic grip

Worry less

The Shimano GRX Di2 Dual Control Lever delivers light and responsive shifting for mixed-terrain riding

Pirelli SporTUBE Training Tube (700 x 42-50mm) D4 The G Series are theThe SporTUBE is the most classic cycling inner butyl tube range, the standard interpretation of the most used air retention system in the world. A complete range with the size and specification for every kind of cyclist and discipline, from road cycling to urban commuting. Specifications 700 x 42 50c 48mm Presta RVC Black Valve Mfr Claimed Weight TBC