The Stem Sizer delivers a simple, quick, and precise way to determine ideal bicycle cockpit position and optimize rider comfort and performance.
Features:
- Single-bolt top-mounted clamp for easy handlebar changes
- Push-button adjustment for smooth length changes–no tools required to make adjustments
- Large thumb screw knob for quick stem angle adjustments within +/- 30 degrees
- Stem length adjustment from 60 – 145mm in 5mm increments
- Extra shim for handlebar clamp for grip. Fits 31.8mm and 25.4 mm handlebars
- Accommodates 1-1/4” and 1-1/8” threadless fork steerer tubes via the provided attachments
- Includes custom padded carry case










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