RaceFace Era Handlebar - Carbon 780mm 20mm 35.0 8 Deg RedRaceFace Era Handlebar Carbon 780mm 20mm 35. 0 8 Deg Red. The Era handlebar was designed from the ground up narrowing the stem clamp area to allow both a quicker taper and an earlier rise to achieve RaceFaces meticulously researched Goldilocks (GL) tune. GL tune is the sweet spot for compliance preferred by most riders; stiffer was too harsh softer was too flexible. Nearly 100 individual pieces of hand laid carbon fiber are bound together using a