BMW flax fibre cooling shaft Link to this image full-size: https://www.racefans.net/2022/03/05/how-a-sustainable-alternative-to-carbon-fibre-could-offer-other-benefits-to-motorsport/bmw-flax-fibre-cooling-shaft/BMW’s flax fibre cooling shaft, introduced for the 2019-2020 seasonAdvert | Become a RaceFans supporter and go ad-freePrevious ImageNext Image