Author Spirit 2025 (red/black/lime)

Author Spirit 2025 (red/black/lime)

Hydroformed aluminium frame

□ SHIMANO Deore shifter and rear derailleur, 12-speed

□ Shimano single chainring with 34 teeth

□ TEKTRO hydraulic disc brakes

□ Branded VITTORIA Barzo tyres 29" × 2.1"

□ AUTHOR accessories

□ Comfortable AUTHOR Navigator saddle

Frame geometry

Explanations

• S/T c-t - seat tube (center-top), seat tube length from the centre of the bottom bracket to its top
• S/T c-c - seat tube (center-center), seat tube length from the centre of the bottom bracket to the top tube axis
• T/T h - top tube horizontal, horizontal top tube length
• T/T a - top tube actual, actual top tube length
• H/T - head tube, head tube length
• C/S - chain stay, chainstay length
• W/B - wheel base, wheelbase (distance between the front and rear wheel axles)
• S/T ang. - seat tube angle, angle between the seat tube axis and an imaginary line connecting the front and rear wheel axles
• H/T ang. - head tube angle, angle between the head tube axis and an imaginary line connecting the front and rear wheel axles
• F/L - fork length, fork length from the bottom of the headset to the centre of the front wheel
• B/B drop - bottom bracket drop, distance between an imaginary line connecting the wheel centres and the centre of the bottom bracket
• F/R - fork rake, distance between the head tube axis and the fork axle measured at the centre of the front wheel, the so-called offset
• hb - handlebars
• stem - stem
• crank - cranks

Additional information