WTB was founded in 1982 in Marine, California as a manufacturer of durable and reliable mountain bike components. Mountain biking at the time was a very new and fast-growing sport, and mountain biking was full of ideas. Many manufacturers have been born and disappeared, but the durability and reliability they seek most remains unchanged even after 30 years, and it continues to exist as a commitment.
ASYM is a rim with an asymmetrical design that evenly distributes tension for a more efficient wheel assembly.
The finest aluminum alloy and open cavity design reduce its weight and the eyelets extend the life of the rim.
Featuring a TCS inner rim profile, ASTM is lightweight and offers the best wheel performance, making it a great rim, especially for handspun wheel buildings.