Nitto B123AA aluminum track bar. A substantially lighter version of Nitto's steel track bar. 25.4 mm clamp, 175 mm drop and 95 mm reach. Available in 36, 38 and 40 cm widths. 38 cm weighs 325g. Look at the B125AA for a slightly different reach/drop.
Same bar as used by Victoria Pendleton
Nitto B125AA aluminum track bar. This bar has the same great quality and shape of Nitto's steel bars, but in a lighter aluminum version. 25.4 mm clamp, 150 mm drop and 88 mm reach. Available in 36, 38 and 40 cm widths. 38 cm weighs 310 grams. The 125 shape is better suited to city riding and people often find it more comfortable than the 123. Shallower drop, shorter reach.