Siskiu T7E 2025

The Siskiu T7E is Polygon's factory-direct value play in the trail eMTB class, built around a Shimano EP801 motor (85Nm) fed by a 630Wh removable Shimano battery, with 150mm of front travel and 140mm at the rear from a full SR Suntour package (Aion 35 fork, TriAir2 3CR shock). It is sold as a single build in the UK with an RRP of £4,500, undercutting most name-brand rivals on the same motor platform.

The component mix is sensibly weighted towards control: a Shimano SLX shifter and rear derailleur run a 1x12 drivetrain over a Deore cassette, while SRAM Code R four-piston brakes on 203mm rotors handle stopping. The aluminium frame carries a flip chip, so the bike runs full 29in as standard but can be set up as a mullet with a 27.5in rear wheel, and dropper travel scales with frame size (150mm on S-M, 170mm on L-XL).

Geometry is firmly in modern trail territory: a 65-degree head angle, 77-degree seat angle and a consistent 452mm chainstay across all four sizes, with reach growing from 452mm on the S to 512mm on the XL. The 337mm bottom bracket height and 1232mm wheelbase on the M point to a bike that prioritises stability and confidence on descents rather than outright nimbleness.