Our Take
The JLL IC400 Pro is a mid-range belt-drive indoor cycling bike aimed at home users who train regularly and want a quieter, smoother ride than entry-level chain-drive alternatives. It sits comfortably in the £300–£500 bracket, targeting enthusiastic amateurs rather than serious athletes who'd require a commercial-grade machine.
Key Features
Belt-drive system for notably quieter operation compared to chain-drive bikes
Heavy perimeter-weighted flywheel providing smooth, consistent pedal resistance
Micro-adjustable seat and handlebars, both vertically and horizontally, to suit a range of rider heights
Felt-pad friction resistance controlled via a central tension knob
Caged pedals included as standard, with SPD-compatible dual-sided pedals available as an upgrade
Onboard LCD monitor displaying speed, time, distance, calories, and RPM
Our Verdict
A sensible choice for home cyclists wanting a quiet, stable bike without spending upwards of £600. It rewards those who simply want to train consistently without needing smart features. If you rely on Zwift, Peloton-style classes, or trackable resistance data, look at a magnetic-resistance or smart bike instead.