Collector / Downpipes Fits: BMW S1000RR 2010, 2011, 2012, 2013, 2014 models. - TIG welded by hand for smoother internal surface. - Modern spring fit design allows for fewer internal welds. - These weigh in at a featherweight 4kg / 8.8lbs (original exhaust 8kg / 17.6lbs). Saving half the weight. - Replaces the heavy original. - Silencer connection is the same position, diameter and angle as the original. - Accepts the original BMW Silencers. - Fitting instruction sheet included. - 2 Year Black Widow Warranty.
