RockShox ZEB A1+ DebonAir+ Buttercup Air Spring Upgrade Kit - 150 mm ZEB A1+ MFPN=BAA1189R Bearing race material is AISI

Bearing race material is AISI 52100 chrome bearing steel hardened to Rc 60-65

0°C to -3°C (32°F to 27°F)

The other waxes on this list areexcellent as well

WTBs I-Beam construction has evolved to further reinforce the rim with dual support beams that provide increased strength and stiffness for the worlds most aggressive riders

RockShox ZEB A1+ DebonAir+ Buttercup Air Spring Upgrade Kit - 150 mm ZEB A1+ MFPN=BAA1189R Bearing race material is AISIRockShox ZEB A1+ DebonAir+ Buttercup Air Spring Assembly Upgrade Kit 150 mm. The new DebonAir+ is built to strike the perfect balance of what riders really want: butter like small bump feel increased air volume to add support throughout the travel and higher overall ride height for more confidence when things get steep.