Author ULTIMA 24 Youth Bike White-Blue

The Author ULTIMA 24 is a reliable youth bicycle for riders around 125–140 cm tall who are ready for their next step in cycling. Its lightweight aluminium 6061 frame ensures strength and easy handling, while the hi-ten steel fork provides comfort on rough paths.

The Shimano TX800 drivetrain with 8-speed Revoshift shifters delivers smooth gear changes and versatility for both climbs and flat rides. Strong TEKTRO V-brakes guarantee dependable stopping power, while the comfortable AUTHOR saddle and ergonomic setup make every ride enjoyable.

Perfect for school rides, weekend trips, or casual trails – the ULTIMA 24 is the ideal balance of performance and fun for young riders growing into full-size bikes.

Technical Specification

Frame size: 12.5” 

Wheels: 24”

Frame material: aluminium 6061

Fork: hi-ten steel 24"

Headset: PRESTINE 1-1/8”

Rear derailleur: SHIMANO TX800

Front derailleur: –

Shifters: SHIMANO Revoshift (8)

Brake levers: TEKTRO aluminium

Brakes: TEKTRO V-brake

Crankset: PROWHEEL, 32T (152 mm)

Bottom bracket: VP COMP monoblock

Cassette: SHIMANO CS-HG31-8, 11–34 (8)

Chain: KMC Z8.3

Pedals: plastic

Rims: aluminium, 32 holes

Spokes: steel

Hubs: QUANDO, 32 holes

Tyres: 24” × 1.50”

Handlebar: steel, rise 20 mm, width 580 mm

Stem: aluminium

Grips: AUTHOR rubber

Saddle: AUTHOR

Seatpost: aluminium (27.2 mm)

Seat clamp: AUTHOR (31.8 mm)

Colour: White-Blue

Gender: unisex

Rider height: 125–140 cm

Suspension: rigid

Purpose: youth bicycle

Shipping:
We ship across the European Union.