The Power Cords will increase your resistance options on the Vasa Trainer.  They can also be used with a Swim Erg if you have the added Trainer Strap System accessory.
Power cords are available in different resistance levels:
- Lite (7-23 lbs.)
- Hard (12-38 lbs.)
Super-Lite (Green) and Medium (blue) cords are SOLD OUT.
NOW AVAILABLE: New Deluxe Power Cord Kit – improved design.  More details here>>>
Watch this video to see the Power Cords in use on a Vasa Trainer: