Supersonic Tube - Supersonic Tube - 26 / 650c x 20 - Supersonic Tube - 26 / 650c x 18 Epic hardtail Compatible with HG 9-speed chains

Compatible with HG 9-speed chains

the EA90 AX boast a wide 25mm internal rim bed that fits adventure tire profiles from 35-55c

crossover front waist and curvy paneling

New Di2 BT-DN320 battery is tucked safely inside an enclosed space on the rear derailleur so the battery won’t budge even in rough terrain

Ductile and tough for hard materials

Supersonic Tube - Supersonic Tube - 26 / 650c x 20 - Supersonic Tube - 26 / 650c x 18 Epic hardtail Compatible with HG 9-speed chainsSupersonic tubes are further optimized for even lower weight and rolling resistance due to their thinner material and construction. Seamless and mold cured construction Removable valve core