Amazon.com : BNVB Aluminum Alloy Bike Fork Stem Quill Riser Extender Extension Road Mountain Bicycle Stem Head Up Raiser Handlebar Riser Adapter φ28.6mm x 150mm (Black 22.2mm) : Sports & Outdoors
Zipp Service Course SL Stem - 150mm 31.8 Clamp +/-6 1 1/8 Aluminum Matte Black B2 | Bikeparts.Com
Sigma Sports on Twitter: "Doesn't get longer than this. 150mm, -17 degree @3TCycling ARX II Team stem, what a beast! #cycling #ridelots http://t.co/Xx2PHGvybm" / Twitter
Slant Parallelogram — A 150mm -10 stem on Degenkolb's bike. So pro.
Amazon.com : Boenoea Bike Stem Riser Bike Fork Stem Extender 115mm 150mm 180mm 210mm Aluminium Alloy Bicycle Handlebar Raiser Head Up Adapter for Mountain Bike, Road Bike, MTB, BMX, Fixie : Sports