Xterra Fitness · Folding Bike Review
Xterra Fitness FB350 Review 2026
The FB350 is the better of Xterra’s two folding bikes: a compact X-frame that tucks away after each session, with a padded back-support seat and an accessory tray the cheaper FB150 goes without. At £169 it is a sensible buy for light cardio in a small space, as long as you go in knowing it is an entry-level ride.
Xterra Fitness FB350
Folding upright bike
The verdict
The FB350 does one thing well: it gives you a usable exercise bike that folds down to a slim 52cm-deep shape and rolls out of the way when you are done. For a flat, a spare bedroom or any home where floor space is the constraint, that is the whole point, and Xterra has covered the comfort basics with a padded seat, a cushioned lower-back pad and soft-foam multi-grip handlebars that the cheaper FB150 cannot match.
The limitation is the flywheel. At 1.5kg it is very light, so the pedal stroke is functional rather than fluid and the ride does not carry much momentum between strokes. That is fine for gentle, steady cardio, which is what this bike is for, but it is the wrong tool for anyone wanting to push hard or train with structure. Read it as a comfortable, fold-away bike for easy sessions and it makes sense at £169.
Strengths
- Folds flat on a compact X-frame for storage
- Padded seat with a cushioned lower-back support pad
- Accessory tray for a phone or remote
- Soft-foam multi-grip handlebars and transport wheels
- Magnetic resistance runs quietly
Watch-outs
- Very light 1.5kg flywheel, little momentum
- 102kg maximum user weight
- No app connectivity and a basic LCD console
- Hand-pulse heart rate only
- 1-year frame warranty, 90 days on parts
Ride feel and real-world experience
The FB350 is built around a 1.5kg precision-balanced flywheel and eight levels of manually controlled magnetic resistance. That keeps it quiet and easy to live with, but it also defines the ride: a light flywheel stores little energy, so the stroke feels more like steady pedalling than the flowing, weighted motion of a heavier bike. On the lower resistance levels it is comfortable for easy cardio; wind it up and you will find the ceiling quickly. This is a bike for keeping moving, not for chasing performance.
Where it does well is comfort and stability for the money. The oversized padded seat adjusts for height and adds a lower-back support pad, the handlebars are soft-foam and non-slip, and the X-frame holds users up to 102kg. It is light at 20.5kg, which is what lets it fold and roll away, though that same lightness means it feels less planted than a heavier fixed-frame bike like the UB120.
Assembly, size and storage
Folding is the FB350’s headline feature and it works well. Assembled it measures 103cm long by 53cm wide; folded it shrinks to around 52cm deep, so it slides into a corner or beside a wardrobe between sessions. Transport wheels make moving it easy despite the modest 20.5kg weight, and assembly is simple, arriving largely built with only the pedals, seat and handlebars to fit. If the ability to clear the floor after every workout matters to you, this is exactly what the FB350 is designed to deliver.
Console and features
The FB350 runs a basic LCD console powered by two AA batteries, showing speed, distance, time, calories, heart rate and an odometer, with a scan mode that cycles through them. Heart rate comes from hand-grip pulse sensors built into the handlebars. There is no Bluetooth and no app connectivity, so you ride to the on-board readout. The practical extra over the FB150 is the accessory tray, which holds a phone or remote so you can prop up a device and follow a free class or watch something while you pedal.
How it compares
The closest comparison is its own stablemate, the FB150. The two share the same 1.5kg flywheel and resistance system, but the FB350 adds a back-support pad, an accessory tray and a slightly larger frame for around £20 more, which makes it the more comfortable buy of the pair. If you do not need to fold the bike away, the UB120 is the stronger Xterra overall, with a heavier flywheel and a higher weight limit. And if you can stretch the budget, the £299 JTX Cyclo-3M moves you into a heavier, smoother class of bike with proper brand support.
Who it is for
The FB350 is for someone who wants light cardio at home but cannot give a bike permanent floor space. It suits small flats, shared rooms and anyone returning to gentle exercise who values comfort and easy storage over ride quality. It is not for hard training or heavier or taller riders pushing the 102kg limit. If folding is not essential, spend the same money on the UB120 instead.
Specifications
| Bike type | Folding upright |
|---|---|
| Resistance | Magnetic, 8 levels, manually adjustable |
| Flywheel | 1.5kg, precision balanced |
| Maximum user weight | 102kg |
| Console | LCD: speed, distance, time, calories, heart rate, odometer, scan |
| Connectivity | None |
| Heart rate | Hand pulse sensors |
| Power supply | 2 AA batteries (included) |
| Seat | Oversized, padded, with lower-back support, height-adjustable |
| Handlebars | Soft foam, non-slip, multi-grip |
| Pedals | Ergonomic with adjustable straps |
| Included | Accessory tray, transport wheels |
| Assembled size (l x w x h) | 103 x 53 x 122 cm |
| Folded size (l x w x h) | 52 x 53 x 128 cm |
| Machine weight | 20.5kg |
| Warranty | 1 year frame, 90 days brake, 90 days parts |
| Usage class | Home |
Warranty and after-sales
The FB350 carries a home-use warranty of one year on the frame, 90 days on the brake and 90 days on parts. That is short next to premium brands but typical for a folding bike at this price, and it is backed by UK retail support through Sweatband. For a £169 fold-away bike used for light, occasional cardio, the cover matches the way most owners will use it.
FitRank breakdown
Performance 2.6
The 1.5kg flywheel carries little momentum, so the ride is light and functional rather than smooth. Eight magnetic levels give enough range for easy cardio but not for hard or sustained efforts.
Build quality 2.8
A solid enough folding frame with a 102kg limit and transport wheels, but at 20.5kg it is light, and the folding X-frame feels less planted than a fixed upright. The 90-day parts warranty reflects the price.
Value 3.2
The strongest pillar. At £169 you get a fold-away bike with a back-support seat and an accessory tray, which is fair for the comfort and storage it offers.
Features 3.0
Better equipped than the FB150 thanks to the back pad and accessory tray, but still a basic LCD, hand-pulse heart rate and no connectivity.
Frequently asked questions
How small does the FB350 fold?
What is the difference between the FB350 and FB150?
Is the 1.5kg flywheel enough?
What is the maximum user weight?
Does it connect to apps?
Chris writes the home fitness reviews across our sites, including our sister site HomeTreadmill.co.uk. He compares every machine against its rivals on UK pricing and specs, and scores each one with FitRank.
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