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WHAT YOU NEED TO KNOW BEFORE INSTALLING GARBARUK WIDE-RANGE CASSETTE

Check Your Chain LengthPositioning the Rear Derailleur CorrectlyAdjusting the B-Tension ScrewACHIEVING PERFECT SHIFTING PERFORMANCE

Check Your Chain Length

Since you're installing a wide-range cassette, your current chain might be too short. If needed, you should add 2-6 links or use a longer chain. 

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Using a chain that is too short can lead to drivetrain issues or even rear derailleur damage.


For full-suspension bikes, keep in mind that the chainstay length changes as the suspension moves, so selecting the correct chain length is even more important.

Positioning the Rear Derailleur Correctly

When adjusting the chain length, the distance between the rear derailleur cage and cassette also changes. To ensure proper shifting, the derailleur cage should be positioned as shown in the diagram below. A 10-degree tolerance is allowed.

Adjusting the B-Tension Screw

 The b-tension screw helps your derailleur accommodate the larger cassette cogs:

  • Tightening the screw moves the upper pulley further from the cassette, increasing derailleur capacity.
  • Loosening the screw decreases the distance between the upper pulley and cassette.
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🔧 The upper pulley should be approximately 5mm from the largest cassette cog when the chain is on the biggest cog.


ACHIEVING PERFECT SHIFTING PERFORMANCE

 To ensure smooth and precise shifting, the rear derailleur hanger must be straight.

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A bent derailleur hanger can cause inaccurate shifting and extra noise while riding.

🚲 Common causes of a bent hanger:

  • The bike has fallen.
  • The rear derailleur hit a rock or another object.

✅ How to check it?

A derailleur hanger alignment tool is available at most bike shops and can help confirm if your hanger is properly aligned.

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