SLX is the new groupset from Shimano with options designed to cater for the differing needs of the modern day trail rider. SLX borrows elements from both the new XT and XTR but at an affordable price. The Shimano SLX M670 2013 10 Speed Double Top Swing Front Derailleur – Dual-Pull has a clean cable routing to decrease problems with tyre clearance. Increased suspension stroke and tyre clearance thanks to the new slant shaped left linkage design. Top pull only options for further increased tyre clearance on 29ers.