Gates Locknut Tool for S550 sprocket lockring
The Gates Locknut Tool for S550 is the tool for assembling and disassembling the sprocket of the S550 crankset. It turns the sprocket lockring of the S550 crankset.
Why choose this tool?
Made for the S550. Fits the sprocket lockring of the S550 crankset.
Assembly and disassembly. For fitting and removing the sprocket of the crankset.
The right tool for the lockring. A purpose-made tool instead of improvising.
Gates tool. A Gates tool for the S550 crankset.
What is it for?
The tool is made for the lockring that holds the sprocket on the S550 crankset. Use it to assemble and disassemble the sprocket.
Fitting and removing sprockets
The Locknut Tool is for the S550 sprocket lockring. To remove 9-spline and Bosch sprockets use the Strap Wrench, and to fit SureFit sprockets the SureFit Tool.
Technical data
| Property | Value |
|---|---|
| Type | Lockring tool |
| For | Sprocket lockring of the S550 crankset |
| Use | Assembly and disassembly |
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 | Checks the frame |
| SureFit Tool | Fits sprockets |
| Strap Wrench | Removes sprockets |
| Locknut Tool for S550 (this tool) | 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
Which crankset is it for?
It is made for the S550 crankset. If you are not sure that your crankset is an S550, send us the model and we will confirm.
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
