The Framesandgear Aero Computer Mount for FSA OS-99 Stem Black lets you mount Garmin, Wahoo, Hammerhead, and Bryton cycling computers directly on the FSA OS-99 Stem. The CNC-machined aluminum computer mount allows for adding various add-on mounts, such as GoPro, Insta360, and quick-lock mounts. This computer mount supports Garmin, Wahoo, Hammerhead, and Bryton computers.Full compatibility list: Universal 28 mm. Stem ● Cannondale Conceal C1 Stem ● Deda Superbox Stem ● FSA OS-99 Stem ● Pro Vibe Superlight Stem ● Pro PLT StemThis mount fits all stems with a 28 mm distance from center to center of the (lower or upper) bolt holes on the front plate of the stem. What's in the package: 1 x Framesandgear Aero Computer Mount in the selected length 1 x (Selected) Computer mount insert for Garmin, Wahoo, Hammerhead, or Bryton Hardware/ Fitting bolts When to fit this product: Use it when you need a computer mount tailored for the FSA OS-99 Stem, or if you simply are seeking an upgrade for a clean mount that matches the cockpit However, only use it when your bar/stem and interface match the confirmed compatibility list in the product description Key specs Compatibility: FSA OS-99 Stem Computer fit: Garmin, Wahoo, Hammerhead, and Bryton Color: Black GoPro: Without GoPro (can be added) Mount angle: Adjustable (25° for Small sizes, 6° for Medium and Large sizes) Material: 7075 CNC-machined aluminum Weight: 32-36 g. Important compatibility note With a cycling computer installed, Framesandgear computer mounts can support one additional device underneath: either a light or an Insta360/action camera—not both. When using a cycling computer, select only one add-on device for the underside of the mount. Why 7075 CNC-machined aluminum 7075 CNC-machined aluminum provides a stiff and strong base for an out-front computer mount, ensuring the computer stays stable on rough roads and during hard efforts. Further, the machined shape helps match the cockpit interface precisely. As a result, the mount supports a strong, cleaner setup and consistent computer position without adding unneeded bulk. Mount installation on the handlebar/stem Fit the mount according to the original handlebar or stem manufacturer’s instructions. Use the torque value specified by the handlebar/stem manufacturer for this mounting point. Do not overtighten. Many bar and stem systems, especially carbon interfaces, have low torque limits, such as 3 Nm. Ensure the mount is seated evenly before final tightening. Check that the mount is secure before riding. Adjustment and setting of the side angle adjust bolts Hand-thread both side bolts (2× M4×10, included) to keep the mount loosely in place before tightening. Cross-tighten the side bolts — tighten each bolt gradually and alternately (left → right → left → right) to ensure an even, balanced fit across the interface. Do not fully tighten one side before the other. Torque to 4 Nm on each bolt. At 4 nm, the arm locks firmly in position and will remain stable even when an add-on mount (GoPro, Insta360, or quick-lock) is attached. Shipping and trust Free worldwide shipping included Tracked shipping service provided from departure to delivery Secure packaging for all parts and components The Framesandgear Aero Computer Mount for FSA OS-99 Stem Black is manufactured for riders who need a stable cycling computer mount with the option to fit all sizes of computers and add-on solutions, and who search for a clean, strong out-front setup.
