SRAM Apex Eagle Rear Derailleur - 12-Speed, Long Cage, 52t Max, Black, D1 water-bottle-cage-hardware The Powertrac elliptical design means

The Powertrac elliptical design means the diameter is that of a chainring 2t bigger

and an indexed travel system (8 positions)

SRAM XX1 Eagle DUB Crankset Crankset UPC: 710845813573

This pump has an integrated aluminum air chamber that stores an air charge of one liter

DT Swiss 240 EXP Rear Hubs Rear Hub EAN: 7613052332819

SRAM Apex Eagle Rear Derailleur - 12-Speed, Long Cage, 52t Max, Black, D1 water-bottle-cage-hardware The Powertrac elliptical design meansThe SRAM Apex Eagle rear derailleur quietly and quickly shifts across their 12 speed Eagle cassettes, while 1x specific chain retention technology keeps the chain where it needs to be. It's the best of SRAM's road and mountain bike innovations in one package. Compatible with 50t and 52t Eagle cassettes Works with SRAM 12 speed mechanical Apex and Eagle shifters For use with Eagle 12 Speed chain Roller Bearing Clutch controls chain tension for