H2X Challenger Series
The Challenger bridges the gap between fitness and performance, so you can take your training to the next level. Challenger models feature an innovative jet system that does not introduce air into the water stream. With VIP Technology and six strategically placed jets, the system creates a smooth, wide current of water that can challenge a novice or elite swimmer with the press of a button. Plus, experience the hydrotherapy and relaxation you want and need.
Find a DealerModels
Built for the Next Level
Push your performance further with a powerful swim current and built-in hydrotherapy recovery.
Dimensions
257" x 94" x 60"
653 cm x 239 cm x 153 cm
Jets
53
Weight (Dry/Full)
3735 / 34045
1695 / 15443
Gallons
1,830
6,928 L
Dimensions
231" x 94" x 60"
587 cm x 239 cm x 153 cm
Jets
47
Weight (Dry/Full)
3335 / 24230
1513 / 10991
Gallons
2,350
8,896 L
Features
Discover what sets Legend apart
Swimming
Airless VIP
Advanced airless jet technology produces a smooth, low-turbulence current that improves in-water visibility and creates a more natural, controlled swim experience.
Swimming
Aquaspeed VSP
The Challenger swim system features six airless VIP jets that create a strong, steady current without introducing air into the water.
Fitness
H2Xercise™ Fitness System
Water exercise is a great way to work toward your fitness goals. H2X Fitness Swim Spas come with the H2Xercise Fitness System, which includes rowing bars and resistance tubing.
Fitness
Nonslip, Comfort Floor System
The Nonslip, Comfort Floor System offers safety and comfort with the unique combination of traction and cushion.
Therapy
StressRelief Neck and Shoulder Seat™
Relieve tension and pain in your neck and shoulders with the StressRelief Neck and Shoulder Seat. The unique out-of-water jets target this high-tension area.
Therapy
Hydrotherapy
Experience the best of hydrotherapy with adjustable temperature controls and strategically placed jets. H2X Fitness Swim Spas feature contoured therapy seats and the Xtreme Therapy Cove so you can relax and recover.
Therapy
Xtreme Therapy™ Cove
The Xtreme Therapy Cove features a unique jet pattern that targets back, hips, thighs, and calves. Use as a recovery tool or enjoy a therapeutic massage.
Therapy
Master Force™ Bio-Magnetic Therapy
The Master Force Bio-Magnetic Therapy System features strategically placed magnets to relieve inflammation, improve circulation, and boost nervous system responses.
Relaxation
Water Features
The waterfalls of your swim spa are soothing to watch and listen to, adding to the overall ambiance of your backyard.
Pure Enjoyment
EcoPur Filtration
The clean, clear water you want without the harsh chemicals you don't. EcoPur Charge uses minerals like copper and zinc to purify water and remove dirt, bacteria, and algae.
Pure Enjoyment
Mast3Pur™ Water Management System
The Mast3rPur™ Water Management System reduces the amount of chemicals, like chlorine, that you need to use and keeps your spa water clean naturally.
Pure Enjoyment
Wi-Fi Module
Control your swim spa from the convenience of your phone. Set the water temperature, turn on the light, run the massage pumps, and more.
Efficiency
Safer for the planet and you
Our environmentally friendly foam insulation produces no harmful off gasses, supporting cleaner air and a healthier environment.
Efficiency
All-encompassing thermal barrier
Full-foam insulation and thoughtful construction help retain heat and manage energy use in changing weather. The result is consistent performance season after season — and greater confidence in long-term operating costs.
Efficiency
Custom covers for a better fit
A tight-fitting cover provides an insulating barrier between the water and air. MasterSpas' covers feature dense foam and a snug fit to keep heat in and protect your spa from the elements.
Swim Spa Benefits
Better Living, Built In
Walk, Jog, Swim, Exercise
Year-Round Use Without Leaving Home
Water Buoyancy Relieves Pressure on Aching Joints
Healthy Family Time
Gallery
Where your next challenge begins
The best way to know which model is right for you is to see it in person. A local MasterSpas dealer can walk you through the features, share pricing and help you envision how it fits your lifestyle. Take the step toward your perfect soak today.
Comparison Chart
| Challenger Series Model | 21D | 19D MAX | 15D TEMP+ CONTROL |
15D |
|---|---|---|---|---|
| Features & Options | Sun Lounge | |||
| StressRelief Neck and Shoulder Seat™ | Standard | Standard | Standard | Standard |
| Master Force™ Bio-Magnetic Therapy System | Standard | Standard | Standard | Standard |
| Master Blaster® Foot Massage Therapy | Standard | Not Available | Not Available | Not Available |
| Xtreme Therapy™ Cove | Standard | Standard | Standard | Standard |
| EcoPur® Charge + Ozone | Standard | Standard | Not Available | Standard |
| LED Lighting (illuminates waterline) | Standard | Standard | Standard | Standard |
| Deluxe Quad-Fold Cover | Standard | Standard | Standard | Standard |
| Wi-Fi Module | Standard | Standard | Standard | Standard |
| Nonslip, Comfort Floor System | Standard | Standard | Standard | Standard |
| H2Xercise™ Fitness System | Standard | Standard | Standard | Standard |
| AquaSpeed VSP™ Propulsion System | Standard | Standard | Standard | Standard |
| Velocity Injector Plate (VIP Technology™) | 6 Airless Jets | 6 Airless Jets | 6 Airless Jets | 6 Airless Jets |
| Flow Stream | Not Available | Not Available | Not Available | Not Available |
| Mast3rPur™ Water Management System | Optional | Optional | Standard | Optional |
| Fusion Air Sound System | Optional | Optional | Optional | Optional |
| Accessories | ||||
| Axis® Cover System | Optional | Optional | Optional | Optional |
| Hybrid Cover | Optional | Not Available | Not Available | Not Available |
| Axis® Cover Shelf | Optional | Optional | Optional | Optional |
| Hydraulic Cover Lift | Optional | Optional | Optional | Optional |
| Manual Cover Lift | Optional | Optional | Optional | Optional |
| Heat Pump | Optional | Optional | Optional | Optional |
| Premium Spa Step | Optional | Optional | Optional | Optional |
| Bluetooth Speaker | Optional | Optional | Optional | Optional |
| Water Feature | 8 | 5 | 5 | 5 |
| Pumps | 3 | 3 | 3 | 3 |
| Power Requirements | 240 V 100 Amp |
240 V 50 Amp |
240 V 50 Amp |
240 V 50 Amp |
| Listing Number | 9972 | 9969 | 9973 | 9915 |
Standard
Optional
Not Available











