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Tools & jigs
Disc brake pad spacer for Shimano and SRAM calipers
The little plastic spacer that stops hydraulic brake pads closing when the wheel is out is always the first thing lost from a bike bag. This one slides between the pads of a Shimano Deore, XT, GRX or SRAM Level, Code and G2 caliper: a 1.9 mm thick blade 30 mm deep and 25 mm wide that matches a rotor, a 12 mm keeper tab that hooks over the caliper body so it cannot fall into the rotor slot, and a 6 mm hole for a loop of cord. Print it flat in PETG or PLA at 100 percent infill. 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 |
|---|---|
| depth into caliper | 30 mm |
| width | 25 mm |
| thickness | 1.9 mm |
| chamfer size on blade edges | 0.5 mm |
| height of vertical tab before fold | 12 mm |
| tab thickness | 2 mm |
| length of folded-over section | 20 mm |
| cord hole diameter | 6 mm |
| distance from fold edge to hole center | 6 mm |
Example prompt
Design a disc brake pad spacer with a 1.9 mm thick blade 30 mm deep and 25 mm wide, a 12 mm tall keeper tab folding over the caliper at 90 degrees with 2 mm thickness, a 6 mm cord hole in the tab and 0.5 mm chamfers on the blade edges.
Fit notes
Different calipers have different pad spacing and body widths, so a single downloaded spacer is often too fat for a road caliper or too loose for a four-piston MTB one. Tell SpeakCAD your brake model, preview the spacer in the browser, adjust the thickness in the chat, then download the STL and print a handful.
Questions people ask about a disc brake pad spacer for Shimano and SRAM calipers
The little plastic spacer that stops hydraulic brake pads closing when the wheel is out is always the first thing lost from a bike bag. This one slides between the pads of a Shimano Deore, XT, GRX or SRAM Level, Code and G2 caliper: a 1.9 mm thick blade 30 mm deep and 25 mm wide that matches a rotor, a 12 mm keeper tab that hooks over the caliper body so it cannot fall into the rotor slot, and a 6 mm hole for a loop of cord. Print it flat in PETG or PLA at 100 percent infill.
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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