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![Spinervals Flexible Warrior Volume 1.0 Spinervals Flexible Warrior Volume 1.0](https://cdn11.bigcommerce.com/s-c0cjv/images/stencil/300x300/products/29774/51816/51816__70049.1679700132.png?c=2)
They call it the race of truth - athlete versus the stopwatch. There is no better measure of a cyclists fitness. Perfect for any rider getting ready for a time trial or simply wanting to increase their lactate threshold! Length: 90 minutes Difficulty level: 9.7