We just stocked up on Driven fuel caps for both 390s, because honestly, they're fantastic. Perfect fitment, easy use, lighter, and super sleek. www.mnnthbx.com
We work often with P3, the highest quality USA made carbon available, and have now started stocking fork sleeves for the 390 (RC & DUKE) for those looking for some weightless cosmetic changes... www.mnnthbx.com