- Eccentric design allows the head angle to be changed by 1 to 1.5 degrees and bottom bracket height to lower or raise by shortening or lengthening the effective eye to eye of the shock - Slacken the head angle for steeper courses or steepen it for sprinting - 6mm hardware provides the greatest amount of alteration - Used on World Cup circuit by many of the top riders - Made from Grade 5 titanium, which is significantly lighter than steel hardware - Sets of 2 for 1/2" shock eyelet shocks, see www.burgtec.co.uk/ for frame fitment chart