Almost by definition, bikes come with compromises. A stiffer bike might mean more responsive, but it’ll cost you comfort. A slacker one is often more fun on descents, but likely a pain climbing uphill ...

Pivot’s newest XC bike is the revamped Mach 4 SL. Gone is the choice between two models (short and long travel), replaced by a single version with adjustable travel between 110mm and 120mm. Rear ...