2025

AUTHOR Sonic 27.5

Mountain · Crosscountry · Unisex

Frame material Aluminum

Wheel size 27.5

Tires Cst B-Trail, Aramid, 2...

Brake type Tektro Hd-M276, Disc H...

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RRP

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Observed price — New

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Refurbished price

1 234 €

Likely trade-in value

1 234 €

About this bike

Author engineered the Sonic 27.5 2025 as a mountain bike in the crosscountry segment. Built around an aluminium frame.

Scroll down for the full retailer breakdown, price history and trade-in benchmark of the Author Sonic 27.5.

Specifications

CategoryMountain

SubcategoryCrosscountry

Year2025

Frametriple butted hydroformed alloy 6061 27.5"

Frame materialAluminum

ForkRST Aerial 27.5 TnL, air, lock out (80 mm)

SuspensionHardtail

Sizes XXXXXXXX

Components

Rear derailleur SHIMANO Cues 6000

Brake type Tektro Hd-M276, Disc Hydraulic (6" Rotors)

Brakes TEKTRO HD-M276, disc hydraulic (6" rotors)

Handlebar AUTHOR Flat Top bar, 9°, 620 / 640 mm

Stem AUTHOR alloy

Saddle AUTHOR Champion / 14", AUTHOR Navigator / 16"

Seatpost AUTHOR alloy (31.6)

Pedals plastic

Wheels & Tires

Wheel size 27.5

Rims AUTHOR Xenon TRC 27.5, 32 holes

Tires CST B-Trail, aramid, 27.5" × 2.25"

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