- 30mm asymmetrical aluminium rim and Mavic`s patented FORE & PFP technologies make the e-Crosstrail SL a nearly indestructible E-mtb wheel - Black Shield rim treatment doubles the protection against rim impacts and scratches - Fore drilling makes the rim completely airtight, eliminating the need for a rim tape and saving 30g per wheel - Straight pull, bladed spokes aid in handling without sacrificing durability