The service course sl 70 is the bike fitters go to bar the short reach to the hoods allows a proper fit without compromising stem length and steering control with the revised ramp angle proper fit is now achievable on even the most challenging setups the sl 70s specially tuned drop shape allows comfortable hand positions with a short reach to control levers vital for race situations the bars 70mm reach the horizontal distance from the bars stem clamp area to the center of the brake pe