Optimise your efficiency and comfort by fine tuning your stem angle with this adjustable and economical stem gt 3d forged and cnc machined 6061 aluminum roadmtb compatible stem gt 4 bolt oversized 318mm handlebar interface with relieved faceplate gt equipped with top cap and 4 2 and 0 shims gt available in 12 17 and 24 angles gt 12 10 position angle range 8 to 16 in 2 increments gt 17 10 position angle range 13 to 21 in 2 increments gt 24