Wolf Tooth Components IS52 Premium Upper& Lower Headset for ENVE Black ModelNumber=H2613 Drop-Stop ST is optimized for

Drop-Stop ST is optimized for Shimano 12-speed Hyperglide+ chains

long-cage XTR Di2 rear derailleur designed to shift through adversity and shrug off impacts

Shimanos OPTISLICK cables feature a minimal and uniform electrically coated layer that improves cable routing efficiency and provides excellent corrosion resistance

220 Rotor Type One Piece

Wolf Tooth Components IS52 Premium Upper& Lower Headset for ENVE Black ModelNumber=H2613 Drop-Stop ST is optimized forPremium Wolf Tooth headsets for ENVE IN Route system only. Sold as an Upper & Lower set Custom in house designed seals Enduro stainless bearings Made in MN, USA Model ENVE IN Route Premium Set S. H. I. S. IS52 28. 6 IS52 40 Upper Lower Set Stack Color Black