Metal Stem, 31.8mm ,Carbon Fiber Bike Stem, for Mountain Road Bike, BMX, | eBay
TANGZHIMI Bike Stem Road Bicycle Stem Aluminum Carbon Stem MTB Mountain Bike Stem Bike Parts 31.8 * 70-120mm UD Gloss Black Mtb Stem (Color : 17 angle x 100mm) : Amazon.co.uk: Sports & Outdoors
HKYMBM Bike Stem, -10 Degree 31.8 mm Full Carbon Fiber Lightweight Bicycle Stem, for Most Bicycle, Road Bike, MTB, BMX, Cycling,Black,80mm : Amazon.co.uk: Sports & Outdoors
Review: PRO Vibe Carbon stem | road.cc
Enve Road handlebar and stem review | Cyclingnews
DODICI Handlebar Full Carbon Fiber Stem 31.8*70-120mm MTB Road Bike Stem 6/17° | eBay