BRN Offroad, LLC

Chain Slack Tool – KTM 55mm to 58mm

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Chain Slack Tool - KTM 55mm to 58mm. Use this tool to verify chain slack at a glance. Check and adjust chain tension in seconds.

For late model KTM dirt bikes with 55mm to 58mm of chain slack, measured from the top of the swingarm.

Refer to excerpt below of a KTM dirt bike manual that describes how to measure chain slack. If your bike’s manual describes the same method, this tool is compatible with your bike.

It’s Fast, It’s Easy to Use, It’s Accurate:

  • Verify chain slack at a glance
  • Stop counting tick marks on a ruler
  • No numeric measurements to remember
  • Tool requires no settings or adjustments
  • Designed specifically for your particular make and model bike
  • Follows manufacturer recommendations

Our chain slack tools are specifically designed for a particular make and model of bike. This makes our tools faster and easier to use than the universal chain slack and chain tension tools that are currently available on the market. You save time because you don’t have to look up measurements in your manual or adjust the tool itself for your bike.

Simply grab the chain slack tool, put it into position on the bike, and visually verify chain slack in seconds. You don’t have to squint to count millimeter tick marks on a ruler. You don’t have to remember any measurements or locate your manual to look up measurements. Plus, our chain slack tool allows you to verify chain slack by following the method recommended by your bike’s manufacturer. (Contact us if you need a custom-designed tool for your custom or heavily modified bike.)

We designed these chain slack tools to be just as easy to use as the “block of wood” or “three fingers” method and provide a more accurate and precise measurement.

Correct chain tension is important. If the chain tension is too tight (not enough chain slack), the chain, front sprocket, rear sprocket, transmission, and rear wheel bearings wear more quickly and could possible break if over-stressed. If the chain tension is too loose (too much chain slack), the chain may fall off the front sprocket or rear sprocket, which may result in the rear wheel locking up or engine being damaged. Our chain slack tools can help you ensure your chain slack is correct.

This product has one or more patents pending.

Note: The actual color of the product is black. It is no longer available in orange.

Instructions

Click Here for Video Instructions

#1

Position your bike for measuring chain slack according to your owner’s manual. Most often, this requires the rear wheel to be off the ground, so the bike must be on a stand.

#2

Position the chain slack tool at the back of the chain slider. Ensure the tool is resting on the top of the swing arm and is sitting square with the outside and back edges of the chain slider.
Note: The actual color of the product is black. It is no longer available in orange.

#3

Lift up on the chain in front of the tool to “take up the slack” in the chain. Refer to you bike’s manual for details.

#4

Look through the sight window in the tool. If the bottom of the chain is visible within the sight window, the chain slack is within spec.

#5

If your chain is not within spec, refer to this image to determine if your chain is too loose or too tight. Adjust your chain according to your owner’s manual and repeat the steps above.

3D Model Available for Download

You can download the model at the link below.

https://www.thingiverse.com/thing:4295540/

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