Shimano RD-U4000-GS CUES 9-speed Rear Derailleur Ozone The HJC wind tunnel test

The HJC wind tunnel test lab measures the air forces in a variety of riding conditions to improve helmet performance

The wing is 3:1 UCI-legal

2x - Black dirt guard alloy end caps w/ rubber boots

whether on the tarmac or on gravel routes

Flash: High (25 Lumens) 110 Hours / Low (12 Lumens) 150 Hours / Daytime

Shimano RD-U4000-GS CUES 9-speed Rear Derailleur Ozone The HJC wind tunnel testDescription Shimano CUES RD U4000 9 speed Rear Derailleur The Shimano CUES RD U4000 LINKGLIDE 1 x 9 speed rear derailleur with SHADOW RD technology impresses with smooth and reliable shifting performance. This versatile 1 x 9 speed rear derailleur provides seamless shifting and efficient pedaling for uninterrupted trail enjoyment. The flat design and chain stabilization provide generous safety reserves even for rougher terrain. The ultimate long