With its World Championship pedigree, the Reserve 31 DH 27. 5in i9 Hydra Wheelset is built to allow us to ride harder, faster, and stronger without worrying about what sort of damage we're going to discover at the end of the race. The high-strength carbon layup is paired with reinforced spoke holes and an asymmetrical rim design that balances spoke tension on the drive and non-drive sides of the rim for a stronger, stiffer, and more reliable wheel. Plus, if we do case a double and find ourselves with a cracked rim, these are backed by Reserve's rock-solid lifetime guaranteed.