BOTRAK wheel spacers and wheel adapters 4x100 compatible with bmw R chassis, 5x112 compatible with bmw F or G chassis, and 5x120 compatible with bmw E or F chassis. Types/Designs ET, WS, WSR, WAS, and WSN are available depending on the items' thickness (width). Normal thickness (width) available are 3mm, 5mm, 10mm, 12mm, 12.5mm, 15mm, 18mm, 20mm, 25mm, 30mm, 35mm, 40mm, 50mm, 60mm, and that over 60mm up to 100mm can also be provided in case of necessity. Made by true forged alloy aluminum 6061 t6 or aerospace grade alloy aluminum 7075 t6 and precisely CNC engineered to the closest tolerance for perfect fitment. Double surface protection treatment and anodized finish. Extended spacer mounting bolts (for ET, WS or WSR) M 12x1.5, M 14x1.25 or M 14x1.5 are also available and optional.
