The Kynett STREXBOX resistance discs are engineered to deliver maximum inertia and training output within a compact flywheel system.

Designed specifically for the STREXBOX, each disc generates a high level of resistance, allowing users to achieve a strong training stimulus without the need for large or complex setups.

The STREXBOX disc system provides exceptional resistance per disc, outperforming traditional flywheel systems and enabling efficient, high-intensity training.

Each disc level is optimised for different training goals:

• S Disc (0.038 kgm²)
  Ideal for controlled movements and rehabilitation, delivering peak forces up to 90 kg (198 lbs)
• M Disc (0.086 kgm²)
  Designed for strength development, reaching peak forces up to 130 kg (302 lbs)
• L Disc (0.104 kgm²)
  Built for maximum resistance and eccentric overload, with peak forces of 200+ kg (400+ lbs)

Adjustable Resistance

The STREXBOX allows you to train with up to three discs, making it easy to adjust inertia and training intensity by stacking discs.

This flexibility supports a wide range of training applications:

✔ Strength training

✔ Power development

✔ Eccentric overload

✔ Rehabilitation