Turbo Trainers
Browse used turbo trainers for sale from riders across the UK. This category covers direct drive smart trainers that replace the rear wheel and read power to within 1-2%, wheel-on trainers that press a roller against the tyre, classic fluid and magnetic units, and rollers, along with mats, riser blocks, fans and the cassettes a direct drive unit needs. It is aimed at riders training indoors through the winter or warming up before events.
Direct drive or wheel-on turbo trainer?
Direct drive trainers such as the Wahoo Kickr and Tacx Neo take the rear wheel off and drive through a cassette on the trainer's own freehub. They are quieter, measure power more accurately and simulate gradients up to 20% or more, but they cost more and you need a cassette matching your groupset. Wheel-on trainers are cheaper, lighter and quicker to set up, though tyre slip affects the power figure, road tyres wear fast on the roller and a dedicated trainer tyre is worth fitting. Rollers are a third option that trains balance and pedalling technique but does not offer controlled resistance in the same way.
What does a smart trainer need to work with an app?
A smart trainer broadcasts power and speed over ANT+ and Bluetooth, and accepts resistance commands so an app can control the gradient in a simulated ride or hold a target wattage in a workout. A non-smart trainer only provides resistance, so you need a separate power meter or a speed sensor and a published power curve to get numbers out of it. Check what a used unit actually is before buying, since the same model name often covers both a controllable version and a cheaper broadcast-only one. Set-up also wants a mat and a fan, which turn up throughout bike accessories.
What wears out on a used turbo trainer?
On direct drive units, listen to the freehub and check for lateral play at the cassette body — the bearings carry high loads and a rumbling freehub is an expensive fix. Check the belt for a squeal that will not go away after a warm-up, and check the drive-side bearing where most units fail. Ask for a screenshot of a recent calibration or spindown, and ask whether power drifts through a session. Confirm the axle adaptors you need are included: a trainer sold with only quick-release end caps will not take a 12mm thru-axle bike without the right adaptor, and those are model-specific. On wheel-on trainers, spin the roller and look for a flat-spotted or rubber-shedding surface, and check the resistance unit for oil weeping from a fluid chamber, which cannot be repaired. On all types, check the legs fold and lock, and check the feet are present.
How much should a used turbo trainer cost?
Trainers depreciate steeply, and older smart models sell for a third or less of their original price while still doing the job — accuracy on a five-year-old unit does not degrade the way battery life does elsewhere. Pay closer to half of new for a recent direct drive trainer with adaptors and a usable cassette. Buy new if you need current firmware support and connectivity that will still work with training apps in a few years, since older units eventually lose app compatibility. Check the postage position before agreeing a price: direct drive trainers weigh 15 to 20kg, so many are collection-only, and a nearby seller is worth paying a little more for.