Author bike geometry
5 Author road and gravel models, with stack, reach and stock build from the manufacturer’s website. For 4 of them I also work out where the bars end up.
Aura XR2026 · gravel · aluminium · sizes 500–580Charisma2025 · endurance road · carbon · sizes 48 cm (S)–55 cm (XL)Guru2026 · gravel · carbon · sizes 48 cm (S)–57 cm (XL)Ronin2025 · gravel · steel · sizes 500–580Ronin SL2025 · gravel · steel · sizes 50 cm–58 cm
Older models in the archive
Frame geometry only, no build. Model years are approximate.
- Aura 2020–2021
- Aura 55 2018
- Aura XR 2019–2024
- Aura XR 2021–2024
- Aura XR 2025
- Charisma 2020–2021
- Guru 2021–2022
- Guru 2023–2024
- Ronin 2019
- Ronin 2020
- Ronin SL 2019
To find a bike that matches a position that already works for you, go to the home page.