Treadmill review
The Reebok Jet 100z is the cheapest way into Reebok’s Air Motion cushioning, and on paper it is a capable budget treadmill. The problem in 2026 is getting hold of one. Stock has dried up at the major UK retailers, so below you will find our full Jet 100z review alongside two folding treadmills at a similar price that we rate highly and that you can actually buy today.
Why we are showing alternatives. The Jet 100z has become hard to find. It is not currently in stock through the major UK stockists such as Amazon and Sweatband, and availability comes and goes without warning. Rather than send you chasing a treadmill you may not be able to buy, we have lined it up against two we recommend and can point you straight to. Always confirm live stock and price on the retailer’s own site.
This review
Reebok Jet 100z
RunRank 3.0
~£499 RRP £699
|
Pick: peace of mind
JTX Slimline
RunRank 3.6
£599
 British brand
|
Pick: best rated
Echelon Stride 30 Sport
RunRank 4.1
£499 was £899
|
|
|---|---|---|---|
| Availability | Hard to find, often out of stock | In stock, direct from JTX | In stock at Sweatband |
| Overall RunRank | 3.0 / 5 | 3.6 / 5 | 4.1 / 5 |
| Motor | 2.0 HP | 1.75 CHP | 2.0 HP |
| Top speed | 11 mph (18 km/h) | 9.9 mph (16 km/h) | 10 mph (16 km/h) |
| Incline | 12 power levels | None | 12 powered levels |
| Deck | 130 x 43 cm | 122 x 45 cm | 127 x 40 cm |
| Max user | 110 kg | 100 kg | 113 kg |
| App ecosystem | Reebok, Zwift, Kinomap | Zwift via Runpod | Echelon Fit, Strava, Fitbit |
| Assembly | Around 90% assembled | Arrives fully assembled | Part-assembled |
| Warranty | Lifetime frame, 2yr P&L | 2yr in-home engineer | 1yr, or 5yr with Premier |
| Buy | Check price at Reebok → | Check price at JTX → Read the Slimline review | Buy at Sweatband → Read the Stride 30 review |
You want a British machine bought direct that arrives fully assembled, backed by a two-year in-home engineer warranty, and folds dead flat to slide under a bed. You are happy without incline and mostly walk or jog. It costs a little more at £599, and the extra goes on build confidence and after-sales support.
You want the highest RunRank of the three at the lowest price, twelve levels of powered incline for hill and 12-3-30 sessions, and a connected app with 19 onboard programmes you can run without subscribing. At £499 it is the same money as the Jet 100z with a far bigger saving off RRP.
To be straight about the Jet 100z itself: it is not outclassed on paper. It keeps a slightly faster top speed than the Slimline and matches the Echelon on incline, and its Air Motion cushioning is genuinely good. Its real weakness now is simply that you cannot reliably buy it. If you do find one in stock at a fair price and the spec suits you, it remains a decent budget treadmill. For everyone else, the two picks above are the sensible route. Here is the full review.
Motor and speed
The 2.0 HP motor delivers a top speed of 11 mph (18 km/h). For walking and jogging that ceiling is more than enough. It is a 5:27 per mile pace, faster than most home treadmill users will ever run, so if you train below 8 mph, and most home users do, you will never reach the limit. Where 11 mph becomes a constraint is high-intensity interval training, which wants sprint capacity at 10 to 12 mph with recovery at 4 to 5 mph. With the Jet 100z your top-end sprint is capped before the pace that creates genuine anaerobic effort for fitter runners. Beginners will not notice; intermediate and advanced runners will feel the ceiling. Quick speed buttons on both the console and the handlebars allow mid-stride adjustments, which keeps your posture natural rather than tempting you to grab the front bar for balance.
Incline
Twelve levels of power incline, smooth and controlled between levels with no abrupt jerking. That is good for 12-3-30 workouts, hill intervals and structured programmes that vary the gradient. It matches the Echelon Stride 30 here and beats the Slimline, which has no incline at all. It is three fewer levels than the Jet 200 and Jet 300 and six fewer than the Z-Tech AC, which matters most for steep gradient training. For general fitness, walking and moderate incline work, twelve levels is plenty.
Running deck
At 130 x 43 cm the deck is narrow at 43 cm, which is 17 inches. At walking speed it is fine and you naturally stay centred. At jogging pace you start to notice the edges. At running pace, above 8 mph, the width becomes a genuine constraint as your arms swing wider and your feet land further apart. None of this is dangerous, but it creates a subtle tension that takes the edge off the running experience. Length is adequate rather than generous, suiting users up to about 5 ft 8 comfortably at running pace. For reference, the Slimline is a touch wider at 45 cm but shorter, and the Echelon is narrower again at 40 cm.
Air Motion cushioning
Here is where the Jet 100z earns its place. Air Motion is Reebok’s mid-tier cushioning and a genuine step up from the One Series rubber blocks used in the cheaper GT40z. Air-filled pods in the deck compress on each footstrike and transfer air between chambers, redistributing impact dynamically rather than simply absorbing it. The front pods handle landing, the rear pods support push-off, and the transfer between them makes for a more responsive surface than static rubber. In practice it feels softer and more forgiving over longer sessions, and your knees and ankles register less accumulated fatigue after 30 to 45 minutes. The benefit is clearest on incline work, where repeated uphill impact can batter joints on less cushioned machines.
Console and programmes
The 5-window LED display shows speed, time, distance, calories, steps, incline level and heart rate. Functional and clear rather than flashy, with no touchscreen or colour panel, just the numbers you need, presented legibly. Hand pulse sensors in the handlebars give real-time heart rate. There are 28 programmes in total: 24 presets covering fat burning, hill intervals, endurance and cardio, one user-defined programme, and three target modes for distance, time or calories, plus a body fat function. An adjustable cooling fan is built into the console, which is a nice touch on longer sessions.
Connectivity
Bluetooth connects to Zwift, Kinomap and the Reebok Console App, with a 30-day free Kinomap trial in the box. Zwift turns the 100z into a social running experience with virtual worlds and structured workouts, while Kinomap adds filmed real-world routes with automatic speed and incline adjustment. This is a strong area for the Jet 100z: the Slimline has no native app connectivity and relies on a Zwift Runpod foot sensor, while the Echelon runs its own Echelon Fit ecosystem. Both apps run on your phone or tablet propped on the built-in shelf, which is functional but basic.
Build quality and folding
At 65 kg the Jet 100z is heavier than the Slimline’s 43 kg or the Echelon’s 51 kg, and the extra weight translates to good stability with minimal wobble at walking and jogging speeds. The soft-drop hydraulic mechanism raises and lowers the deck smoothly with no slamming, and transport wheels let you roll it against a wall. Folded dimensions of 98 x 73 x 143.5 cm are compact, among the smallest in the Reebok folding range, though the Slimline’s flat fold goes further by sliding under a bed. Assembly is minimal, around 90 percent done out of the box, and most people finish in 20 to 30 minutes.
Who the Jet 100z suits
If you can find one in stock, the Jet 100z suits joint-conscious walkers and light joggers under 5 ft 8 who want Air Motion cushioning, incline and a slightly faster top speed at the lowest price. Given how patchy availability has become, most buyers will be better served by one of the two alternatives above: the JTX Slimline for assembled, warranty-backed peace of mind, or the Echelon Stride 30 Sport for the highest rating, powered incline and a connected app at the same price as the Jet.
Frequently asked questions
Why is the Reebok Jet 100z so hard to buy?
Stock has become intermittent across the major UK retailers, and at the time of writing it is not available through outlets such as Amazon or Sweatband. Availability can return without notice, so it is worth checking Reebok’s own catalogue, but if you want a treadmill you can order today, the JTX Slimline and Echelon Stride 30 Sport are the alternatives we recommend.
What should I buy instead of the Jet 100z?
Two options at a similar price. The JTX Slimline at £599 is a British machine bought direct, arrives fully assembled, carries a two-year in-home engineer warranty and folds flat under a bed, though it has no incline. The Echelon Stride 30 Sport at £499 has the highest RunRank of the three, twelve powered incline levels and a connected app. Read the full Slimline and Stride 30 reviews for detail.
Is the Reebok Jet 100z good for running?
For walking and light jogging, yes. For regular running at pace it is limited. The 43 cm deck feels narrow above 7 mph, though the twelve incline levels and 11 mph top speed give it more headroom than some rivals. Users under 5 ft 8 who jog at moderate speeds will be comfortable.
What is Air Motion cushioning?
Air Motion is Reebok’s mid-tier cushioning, used across the Jet series. Air-filled pods in the deck compress on each footstrike and transfer air between chambers to redistribute impact, with the front pods handling landing and the rear pods supporting push-off. It is a meaningful upgrade on the static rubber blocks of the One Series system, giving a softer, more responsive surface that reduces joint fatigue on longer sessions.
Does the Jet 100z need a subscription?
No. All 28 built-in programmes, every speed and incline setting and manual mode work with no subscription. Zwift and Kinomap connect over Bluetooth but carry their own separate costs, and a 30-day free Kinomap trial is included. The Slimline is likewise subscription-free, while the Echelon offers an optional Premier membership but runs fine without it.
What warranty does the Jet 100z come with?
Lifetime frame, 10-year motor and 2-year parts and labour, covering domestic home use. Strong frame cover on paper. The Slimline’s two-year cover is shorter on the frame but includes in-home engineer repair, and the Echelon’s one year extends to five with a continuous Premier membership.
The verdict
The Jet 100z is a solid, well-built treadmill with one genuinely excellent feature, Air Motion cushioning, plus twelve incline levels and an 11 mph top speed. It earns a RunRank of 3.0. The trouble is no longer the machine, it is getting one: stock has become unreliable at the major UK retailers. If you spot it available at a fair price and the spec fits, it is a reasonable budget buy. Otherwise, spend a little more on the JTX Slimline for an assembled, warranty-backed British machine, or the same money on the Echelon Stride 30 Sport for the highest rating, powered incline and a connected app. Both are in stock and both are easy to recommend.
We research and compare products independently using our RunRank system. If you buy through links on this page we may earn a commission, at no extra cost to you. Prices and stock are checked regularly and change with sales and discount codes, so always confirm the current price and availability on the retailer’s site.
