JTX Fitness Review
The JTX Sprint 9 Pro is the flagship of the range: a 4 CHP brushless motor, a 13.7 mph top speed, a 150 kg user limit and a fixed, non-folding frame for maximum stability. It is the JTX for fast runners and shared households who want a machine built to last, on offer at £1,499 in the Summer Sale. Here is our full assessment.
The JTX flagship for performance running
Save £200 in the Summer Sale
£1,699 £1,499
Summer Sale price, no code needed. Free UK delivery, 3-year in-home warranty, direct from JTX Fitness.
Check price at JTX Fitness →- Motor4 CHP brushless
- Top speed13.7 mph (22 km/h)
- Incline11% power
- Deck152 x 55 cm
- Screen22.5 inch
- Warranty3yr in-home
What is the JTX Sprint 9 Pro?
The JTX Sprint 9 Pro is the top of the range and the only Sprint that does not fold. It pairs a 4 CHP brushless motor with a 13.7 mph (22 km/h) top speed, a 22.5-inch screen and a fixed frame, and is rated for light-commercial use with a 150 kg user limit, the highest in the range.
It is aimed at fast runners, performance-focused training and shared households where a treadmill will see heavy, frequent use. If you do not run fast and do not need a fixed machine, it is more than most home users require, and the Sprint 7 or Sprint 8 Pro will suit you for less.
Motor and running feel
The 4 CHP brushless motor is the strongest in the range, and the brushless design runs cooler and quieter and lasts longer under sustained heavy use than the brushed motors in the Sprint 7 and 8 Pro. Paired with the 13.7 mph top speed, the fastest JTX offers, it gives real headroom for tempo running and faster intervals.
The fixed frame is the other half of the story. Without a folding mechanism there is nothing to flex, so the Sprint 9 Pro is the most planted, stable machine JTX makes, which is exactly what you want at speed and under daily use. At 125 kg it is not going anywhere once it is in place.
Deck, cushioning and incline
The 152 by 55 cm deck sits on an 8-point Cushionstep system, a step up from the 6-point cushioning lower in the range, for the most forgiving surface JTX offers over long distances. The 150 kg user limit is the highest in the range, which along with the light-commercial rating makes it the natural choice for heavier runners or shared households.
One honest quirk: incline tops out at 11 percent, marginally below the 12 percent on the Sprint 7 and 8 Pro. In practice the difference is negligible, but it is worth knowing that the flagship is about speed, motor and stability rather than maximum gradient.
Screen, apps and connectivity
The Sprint 9 Pro has the same large 22.5-inch screen as the Sprint 8 Pro, and connects over Bluetooth to both Kinomap and Zwift, with built-in speakers and Polar-compatible heart-rate support. Kinomap drives the auto-incline to match the route; Zwift handles group runs and structured sessions with your pace tracked live.
Both apps have free tiers, so even the flagship carries no mandatory subscription, which keeps its running cost down against the iFIT-locked machines at this price.
Build, footprint and assembly
The Sprint 9 Pro does not fold, so it needs a dedicated space. In use it occupies about 195 by 84 cm, and at 125 kg with some assembly required and ground-floor delivery only, installing it is firmly a two-person job. Once it is set up, that mass is the point: it is the most stable, planted treadmill in the range.
If you need to fold the machine away, the Sprint 9 Pro is the wrong choice and the hydraulic-fold Sprint 8 Pro or the flat-fold RunRise XL are the alternatives.
How it compares
Against the Sprint 8 Pro, the Sprint 9 Pro adds the brushless 4 CHP motor, the faster 13.7 mph top speed, the higher 150 kg limit and the rock-solid fixed frame, but gives up the ability to fold and has marginally less incline. The choice between them comes down to whether you value the fold and a lower price, or the extra speed, stronger motor and stability. Above it sits the JTX Club Pro, the only model with a commercial AC motor and a true commercial warranty, if you need a genuinely commercial machine. Our best home treadmill guide and treadmills with incline roundup set the field out.
Where JTX stands in 2026
A note for 2026 buyers: JTX refreshed its branding this year around being an independent UK maker that sells direct, with dependable kit and no subscriptions. The Sprint 9 Pro is the fullest expression of that, a flagship you own outright, with Kinomap and Zwift running on free tiers and a build rated to take years of hard use, rather than a screen-led machine tied to a recurring platform fee.
Our overall RunRank is a weighted view across the four pillars, not a flat average. The brushless 4 CHP motor, fastest top speed, highest user limit and stable fixed frame make it the strongest performer and best-built machine in the range, and the £200 Summer Sale saving eases the value pillar; the flagship price still keeps value in check, and the 11 percent incline is a minor quirk against its cheaper siblings. How RunRank works.
- Strongest motor in the range, 4 CHP brushless
- Fastest JTX at 13.7 mph
- Fixed frame is the most stable and planted
- 150 kg user limit, highest in the range
- 8-point Cushionstep deck and a 22.5-inch screen
- £1,499 in the Summer Sale, down from £1,699
- Both Kinomap and Zwift, no mandatory subscription
- 3-year in-home warranty, light-commercial build
- Does not fold, needs a dedicated space
- Most expensive JTX, flagship pricing
- Incline tops out at 11 percent, marginally below the Sprint 7 and 8 Pro
- Heavy at 125 kg, some assembly, ground-floor delivery only
Full specifications
| Type | Fixed-frame motorised treadmill (non-folding) |
| Motor | 4 CHP brushless |
| Top speed | 13.7 mph (22 km/h) |
| Incline | 11% power, with Kinomap auto-adjust |
| Running deck | 152 x 55 cm |
| Screen | 22.5 inch |
| Cushioning | 8-point Cushionstep |
| App connectivity | Kinomap and Zwift (Bluetooth) |
| Heart rate | Hand sensors, Polar-compatible chest strap and wearables |
| Speakers | Built-in |
| Folding | None, fixed frame |
| In-use size | 195 x 84 x 155 cm |
| Max user weight | 150 kg |
| Machine weight | 125 kg |
| Usage class | Light commercial |
| Assembly | Some assembly required, ground-floor delivery only |
| Warranty | 3-year in-home repair (home use) |
| Price | £1,699 £1,499 in the Summer Sale |
Frequently asked questions
How much does the JTX Sprint 9 Pro cost?
The RRP is £1,699, but in the current JTX Summer Sale it is £1,499 with no code needed, a saving of £200. JTX runs sales periodically rather than permanently, so treat £1,499 as a current offer rather than a fixed price and confirm the live price at the checkout.
Is the JTX Sprint 9 Pro worth it?
If you run fast, want the strongest, longest-lasting motor and the most stable frame, or you have a shared household putting heavy use on the machine, yes. For everyday running the Sprint 7 delivers most of the experience for considerably less.
How fast does it go?
Up to 13.7 mph (22 km/h), the fastest in the JTX range, driven by a 4 CHP brushless motor.
Does the Sprint 9 Pro fold?
No. It is a fixed-frame machine and needs a dedicated space. If you need to fold the treadmill away, the Sprint 8 Pro (hydraulic fold) or RunRise XL (flat fold) are the alternatives.
Why does it have less incline than the Sprint 8 Pro?
The Sprint 9 Pro tops out at 11 percent incline against 12 percent on the Sprint 7 and 8 Pro. It is a minor quirk: the flagship prioritises speed, motor strength and stability over maximum gradient, and the practical difference is negligible.
Does it work with Zwift?
Yes, both Kinomap and Zwift over Bluetooth, each with a free tier, so there is no mandatory subscription. On Kinomap the incline auto-adjusts to the route.
What is the maximum user weight?
150 kg, the highest in the JTX range, which with the light-commercial rating suits heavier runners and shared households.
The verdict
The Sprint 9 Pro is the JTX to buy when nothing less will do: the strongest brushless motor in the range, the fastest top speed, the highest user limit and a fixed frame that is the most stable JTX makes, with a big 22.5-inch screen and free-tier Kinomap and Zwift on top. It is expensive and it does not fold, so it is overkill for casual runners, and the 11 percent incline is a small step down from its siblings. But for fast runners, heavier users or shared households who want a machine built to last, at £1,499 in the Summer Sale it is a flagship that earns the name.
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 are checked regularly and change with sales and discount codes, so always confirm the current price on the retailer’s site.
