JKexer 390
CoreStair 2-in-1 Stair stepper & Ab Machine
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2-in-1 Workout Functionality – Combines a high-intensity stepper stair with an effective ab crunch trainer, saving space while delivering full-body training..
- Patented Flip-Up Pedal – Instantly switch from stair climber mode to ab crunch mode with our exclusive patent design. Engineered for seamless transitions and workout versatility. Simply unclip, flip the pedal, and clip in to secure.
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Height-Adjustable Handles – Easily adapts to different user heights, delivering secure support and comfortable positioning for effective stepping training.
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3-Level Adjustable Slope – Three incline positions let you dial in intensity and target your abs with progressive resistance.
- Compact, Mobile, and Comfortable – Foldable construction with transport wheels and thick elbow cushions makes storage effortless while ensuring comfort during stepper and ab crunch training.
Specification
| Model No. | JK 390 |
|---|---|
| Application | Home Use |
| Color | Black |
| Workout Mode | Stepping Mode/Ab Crunch |
| LCD size | 2" LCD |
| Function | Step, Count, Time, Caloris, Scan, Reps/Min |
| Pedal | PP ; 210 (L) x 128 (W) mm |
| Pedal Adjustment | Patented Flipping Pedal with Knee Pad |
| Assembly Size | 1150 (L) x 570 (W) x 1380 (H) mm |
| Folding Size | 1392 (L) x 570 (W) x 135 (H) mm |
| Max User Weight | 110 kg (242.5 lb) |
| Packing Dimension | 1440 (L) x 600 (W) x 160 (H) mm |
| M'ST/N.W./G.W. | 4.88 cuft. / 25 / 29 kg |
| 20'/40' FCL | 200 / 400 / 470 pcs |
More Information
Key Factor to Consider JK Fitness When Choosing Stair Stepper or Ab Cruncher
When choosing a stair stepper or ab crucher, JK Fitness stands out for its focus on versatility, quality, and proven manufacturing expertise. The 2-in-1 Stair Stepper with Ab crunch function offers patented flip-up pedals for seamless workout transitions, adjustable handles to fit users of different heights, and a 3-level incline to customize training intensity.
Backed by nearly 50 years of fitness manufacturing experience, JK Fitness is a trusted fitness equipment supplier recognized for multifunctional, award-winning cardio products, including a Taiwan Excellence Award–winning treadmill. In addition, JK Fitness provides reliable OEM and ODM services, making it an ideal partner for global fitness brands seeking innovation, quality, and flexibility.
FAQ
What's the newest type of stair stepper for home use?
The 2-in-1 Stair Stepper with Ab workout machine is a breakthrough 2025 fitness innovation. Unlike traditional steppers, it features a dual-function mechanism with patented flip-up pedals that instantly switch between stair climbing and ab crunch exercises. Its space-saving design makes it ideal for modern home, apartments, or boutique studios.
What are some unique fitness machines for 2026 product lines?
For 2026 buyers seeking differentiation, multifunction machines are in demand. Our 2-in-1 stepper & ab trainer offers exactly that: cardio + core training in one device. Built with adjustable slope angles, ergonomic handles, and patented switching technology, it's designed for next-generation users who want efficiency.
Can I customize a stair stepper machine with my own brand?
Yes! As a leading home use fitness equipment supplier in Taiwan, we offer full OEM & ODM services. You can customize:
- Logo printing & branding
- Color themes & packaging
