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Models · Author · Charisma

Author Charisma (2025)

endurance road · carbon · sizes 48 cm (S)–55 cm (XL) · tyres up to 35 mm Manufacturer’s website

Geometry ?

Author Charisma 2025 geometry in sizes 48 cm (S)–55 cm (XL): stack 558–619 mm, reach 365–387 mm, head angle 71.5–73°.

48 cm (S)50 cm (M)52 cm (L)55 cm (XL)
Stack558 mm574 mm593 mm619 mm
Reach365 mm375 mm379 mm387 mm
Head angle71.5°72°72.5°73°
Seat angle74°74°73.5°73.5°
Seat tube (c-t)480 mm500 mm520 mm550 mm
Head tube145 mm160 mm180 mm205 mm
Top tube (effective)525 mm540 mm555 mm570 mm
BB drop75 mm75 mm75 mm75 mm
Chainstay420 mm420 mm420 mm420 mm
Wheelbase993 mm1003 mm1009 mm1020 mm
Fork length380 mm380 mm380 mm380 mm
Fork offset50 mm50 mm50 mm50 mm

Source: cz.author.eu, checked 1 Nov 2026 · bar position: worked out from published data

An older model year in the archive with the same stack, reach and head angle: 2026. Source: en.author.eu

Stock build
Charisma 66i 2025-26
Groupset
Shimano Ultegra Di2 R8100 2×12 (50-34, 11-34)
Shifters
Shimano Ultegra Di2 ST-R8170
Cranks
SHIMANO Ultegra 50-34, 170/172.5/175 mm
Stem
FSA NS SMR-II
Handlebar
FSA K-Wing AGX, 420/440 mm
Seatpost
FSA K-Force SBO carbon 27.2
Saddle
PROLOGO Dimension SPACE Tirox
Charisma 55i 2025-26
Groupset
Shimano 105 Di2 R7100 2×12 (50-34, 11-36)
Shifters
Shimano 105 Di2 ST-R7170
Cranks
SHIMANO 105 50-34, 170/172.5/175 mm
Stem
FSA NS SMR-II
Handlebar
FSA A-Wing Pro, 420/440 mm
Seatpost
RITCHEY Comp Carbon Zero 27.2
Saddle
PROLOGO Dimension SPACE T4.0
Charisma 55 2025-26
Groupset
Shimano 105 R7100 mechanical 2×12 (50-34, 11-36)
Shifters
Shimano 105 ST-R7120
Cranks
SHIMANO 105 50-34, 170/172.5/175 mm
Stem
FSA NS SMR-II
Handlebar
FSA A-Wing, 420/440 mm
Seatpost
RITCHEY Comp Carbon Zero 27.2
Saddle
PROLOGO Dimension SPACE T4.0

Source for all builds: cz.author.eu, checked 1 Nov 2026

Frames with similar geometry

Spotted a mistake or a missing build? Let me know.

Are you the manufacturer, or do you sell this bike? I’m missing 12 values for this model’s stem and bars. Add them