Shimano ULTEGRA CS-6700 10-Speed Cassette 12-30T garminpromo it comes with a permanent

it comes with a permanent motor and electronics that are set to generate energy from your cycling movement

Scotchlite 3M reflector for added protection at night

2G uses a 5mm guide pin designed to fit perfectly inside a Quick-release axle

Bluetooth Smart and ANT+ dual band technology allows you to connect to and display data on both smartphones and GPS bike computers

Shimano ULTEGRA CS-6700 10-Speed Cassette 12-30T garminpromo it comes with a permanentThe Shimano 10 speed Ultegra cassette CS 6700 allows exact shifting, but without much effort. Shimano has even improved the accuracy of the gear selection by changing the sprocket design. Despite all its user friendliness, the CS 6700 cassette guarantees maximum precision during shifts. In combination with Hyperglide (HG) chains, HG sprockets ensure fast and responsive indexed shifting. HG sprockets have specially positioned shift ramps and tooth