Gates Frame Alignment Kit
The Gates Frame Alignment Kit measures frame alignment easily and accurately and helps manufacturers with the production and quality control of new frames. It is a professional kit in its own case, made for factories and prototype builders.
Why choose this tool?
Accurate frame check. Measures the alignment of the frame accurately.
For quality control. Helps manufacturers in the production and quality control of new frames.
For belt-drive frames. Gates sets frame requirements for belt drive, including the rear triangle and sprocket alignment.
Complete kit. Delivered as a set in a case, as shown in the photo.

Why does the frame matter?
A belt drive needs a frame whose rear triangle is stiff enough and whose sprockets stay aligned within ±1.0 mm. The Frame Alignment Kit lets manufacturers and prototype builders check this.

Which alignment tool is right for you?
The Frame Alignment Kit checks the frame itself. To check the alignment of the sprockets on a finished bike use the Laser Belt Liner V3, and for the belt line of the rear sprocket the Rear Belt Liner.
Technical data
| Property | Value |
|---|---|
| Type | Professional frame alignment kit |
| Made for | Factories and prototype builders |
| Checks | Frame alignment |
| Delivered | In a case |
Which Gates tool for which job?
| Gates tool | Job |
|---|---|
| Spring Tension Tester | Checks belt tension |
| Sonic Tension Meter 350C | Checks belt tension |
| Sonic Tension Meter 550C | Checks belt tension |
| Belt Tension Meter PCE-BTM 2000 | Checks belt tension |
| Rear Belt Liner | Checks alignment |
| Laser Belt Liner V3 | Checks alignment |
| Frame Alignment Kit (this tool) | Checks the frame |
| SureFit Tool | Fits sprockets |
| Strap Wrench | Removes sprockets |
| Locknut Tool for S550 | Fits sprockets |
| RDM Snubber | Protects the belt |
| Snubber Screw | Protects the belt |
| Snubber Spacer Kit | Protects the belt |
| Belt Care Silicone Spray | Cares for the belt |
| Tensioner Idler Wheel | Replaces a part |
Frequently asked questions
Who is the kit for?
It is made for frame manufacturers and prototype builders who check frames in production. Ask us if you want to know whether it suits your workshop.
Why does sprocket alignment matter?
Front and rear sprockets must stay aligned within ±1.0 mm. Misalignment can cause tooth jump, faster wear, noise, belt derailment or belt failure.
Do I need special tools for a belt drive?
A belt drive needs far less than a chain, but the right tension and alignment matter. Gates offers tools for checking tension, checking alignment, fitting sprockets and protecting the belt – see the table above, and ask us which ones suit your bike.
What do CDX, CDC and CDN mean?
They are Gates’ three belt-drive lines for bicycles: CDX (top of the range), CDC (mid-range) and CDN (entry level). Gates rates CDX for hub motors and mid-drive e-bike motors up to 120 Nm, CDC for mid-drive motors up to 75 Nm, and CDN for hub-motor e-bikes and casual riding. The tools here work with all Gates Carbon Drive parts.
About Gates Carbon Drive
Gates Corporation has been a global leader in power transmission and belt drive technology since 1911. In 2007 it launched the first belt drive system for bicycles, and today more than 1,000 bike brands worldwide use Gates Carbon Drive, from city and trekking bikes to e-bikes, cargo and mountain bikes.
On the bike

