The patented ShockStop Suspension Stem smooths out road imperfections, reducing fatigue and strain. Whether you're a casual rider in search of more comfort, or exploring gravel back roads, the ShockStop Stem will make your ride smoother, faster, and more comfortable. What's in the Box: • 1 x ShockStop Stem • Current Owners: Please reach out for a compression cap. • 5 x Elastomers to fine tune your comfort Fits all our adult bicycles except Coast, Classic Plus, Turi, Cooper, and Carmen. Stock Stem Sizes: Ace: 80mm (S & M), 100mm (L & XL) Apollo: 80mm (S & M), 100mm (L & XL) Gemini: 90mm (S & M), 100mm (L & XL) L Train & Eight: 80mm Continuum Onyx: 80mm (S), 100mm (M & L) Current: 80mm ( Please reach out for a compression cap). 600: 80mm (S), 100mm (M & L)