Our custom Diamond Series 21-inch Castalia wheels are designed for Harley, Victory, Honda, Indian, Yamaha, Kawasaki, and Suzuki motorcycles to “Fit Like a Glove GUARANTEED”!
These custom 21-inch Castalia wheels by SMT are milled and forged from aircraft-grade 6061-T6 billet aluminum DOT-certified American-manufactured blanks. We also offer matching air cleaners, pulleys, rotors, hubs, and sprockets. We can even mount a tire and balance it for you.
There's no substitute for quality, fitment, design, and customer service. When real riders want to ride with the best, they choose SMT Machining - based out of Glendale, Arizona.