Racers can outfit the B4.1 in style with AVID black anodized 12mm clamping hex adapters. AVID clamping hexes are made of 6061-T6 aluminum and then machined with a chamfer for easy wheel installation along with the signature machined highlight. Read more and see photos of these Hexes via the source links. Source: Front: http://www.avidrc.com/product/5/accesories/405/B41-Clamping-12mm-Hex-Front-AV1002-FR-accesories.html Rear: http://www.avidrc.com/product/5/accesories/406/B41-Clamping-12mm-Hex-Rear-AV1002-RR-accesories.html
