Shimano CUES 10/11-Speed Pulley Set for RD-U8020 Black RGroup_1007DFA74349F80216836D3ADD916D38452FE0DA The Big Trail 600 is

The Big Trail 600 is the top of the range and it shows

they feature a textured waffle pattern for secure handhold

shatter-resistant lens

high level cross country race bike

providing superior handling and control over rough trails and descents

Shimano CUES 10/11-Speed Pulley Set for RD-U8020 Black RGroup_1007DFA74349F80216836D3ADD916D38452FE0DA The Big Trail 600 isThe Shimano CUES 10 11 Speed Pulley Set for RD U8020 Black is an original Shimano spare part made to restore crisp, reliable rear derailleur shifting. These high quality idler pulleys help your chain run smoothly with consistent tension, improving control across every gear while offering strong durability for everyday riding. For best compatibility, Shimano recommends using it with matching CUES chains such as CN HG601, CN HG701, CN HG901 and CN LG500.