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Brackets & mounts
Hammerhead Karoo 2 out-front mount with GoPro underside
The Hammerhead Karoo 2 is a big unit at 100.6 x 60.8 x 19.3 mm and needs an arm long enough to clear the stem faceplate. This out-front mount clamps a 31.8 mm bar, reaches 85 mm forward and ends in a quarter-turn socket matching the Karoo's Garmin-style tabs, with a three-finger GoPro interface underneath (3 mm fingers, 3.2 mm gaps, M5 thumbscrew hole) for a Varia UT800, Exposure or Knog front light. The arm is 10 mm thick and 22 mm wide with a 2 mm skin over honeycomb infill, and it prints upside down on the head face in PETG. Open the ready-made model free, resize it on your phone or computer, then download a print-ready STL, 3MF or G-code sliced for your printer, free.Opening the ready-made model and downloading it as STL or 3MF are free, no card; AI changes use credits, from Maker at $7.99 a month.No printer? We print this part and ship it to your door. See its priceUpdated
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Adjust
Change its numbers in the viewer for free, or ask the AI in the chat: wall thickness, hole size, the thing it clips onto. AI changes use 2 credits per request (1 for a quick edit, 3 for a redesign), paid with a plan from Maker at $7.99 a month.3Print
Download a watertight STL or 3MF free, with your numbers and hand edits, or G-code sliced for your printer at the same price. After an AI change the download is included in every plan (4 credits without one).
Dimensions of the ready-made model (editable)
| Parameter | Value |
|---|---|
| bar inner diameter | 31.8 mm |
| clamp wall thickness | 4 mm |
| clamp width along bar axis | 22 mm |
| split gap width | 6 mm |
| M5 clearance hole | 5.2 mm |
| bolt boss diameter | 10 mm |
| width of fingers (along arm width dir) | 20 mm |
Example prompt
Design an out-front bike computer mount with a 31.8 mm split clamp and two M5 bolts, an 85 mm arm 10 mm thick and 22 mm wide, a Garmin quarter-turn socket on top and a three-finger GoPro mount underneath with 3 mm fingers, 3.2 mm gaps and a 5.2 mm hole.
Fit notes
A measured mount keeps the heavy Karoo from sagging and puts the light exactly where the fork does not shadow it. Describe your clamp size, reach and light position in SpeakCAD, preview the model in the browser, refine it in the chat, then download the STL or 3MF.
Questions people ask about a Hammerhead Karoo 2 out-front mount with GoPro underside
The Hammerhead Karoo 2 is a big unit at 100.6 x 60.8 x 19.3 mm and needs an arm long enough to clear the stem faceplate. This out-front mount clamps a 31.8 mm bar, reaches 85 mm forward and ends in a quarter-turn socket matching the Karoo's Garmin-style tabs, with a three-finger GoPro interface underneath (3 mm fingers, 3.2 mm gaps, M5 thumbscrew hole) for a Varia UT800, Exposure or Knog front light. The arm is 10 mm thick and 22 mm wide with a 2 mm skin over honeycomb infill, and it prints upside down on the head face in PETG.
Click Open it free on this page and create a free account (no card): the ready-made model opens in your browser, on your phone or computer, nothing to install. Change its numbers in the viewer for free and download a watertight STL or 3MF free, or G-code sliced for your printer at the same price. An AI change in the chat uses 2 credits per request (3 for a redesign), and the download after it is included in every plan (4 credits without one). Start with Maker: 50 credits a month for $7.99, cancel anytime.
On this page: open the ready-made model free in a SpeakCAD account (no card), change any dimension in the viewer, then download the STL or 3MF free, or G-code sliced for your printer at the same price.
A shared STL is modelled for someone else's measurements. Here you open the ready-made model free, change it to your measurements in the viewer, then download a file sized for the part you actually own, free as STL or 3MF.
Yes. SpeakCAD slices the part on its servers with OrcaSlicer and your printer's official profile (380+ printers, including Bambu Lab, Prusa, Creality and Elegoo), and you download the G-code (a sliced .gcode.3mf for Bambu Lab printers). G-code sliced for your printer costs the same as the STL: included in every plan, free for a part you shaped by hand, 4 credits without a plan for a part with AI work in it. Pick your printer on the printers page to see its profile.
No. SpeakCAD runs in the browser on your phone or computer: the chat, the 3D engine and the live viewer load in the tab. The only file you download is the finished STL, 3MF or sliced G-code.
Print it your way
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