Lightweight and durable: the Reverse XC 31.8 6° 80 mm Stem. The stem is CNC machined and constructed from a single piece of aluminium, making it very strong. This stem can be ridden with a 6° upsweep or flipped to -6°. The clamp is equipped with four bolts for even load distribution. The XC 31.8 mm 6° 80 mm stem is a great addition to your mountain bike!