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Precision install made easy with the Shimano TL-LR21 Lock Ring Tool 9T
Installing a Shimano 12-speed cassette with a 9T cog? The TL-LR21 Lock Ring Tool 9T is the shop-grade tool designed specifically for the job. It delivers a precise fit on Shimano’s unique 9T lock ring, helping us get a secure mount without slipping, stripping, or rounding things out.
Built from durable steel for daily use, it’s the kind of purpose-built tool that belongs in every well-stocked bike bench. No guesswork, no frustration—just a fast, clean install every time.
Details
- Specialized lock ring tool for Shimano XTR 9–45T cassette installation
- Precise fit prevents slippage on Shimano 9T lock rings
- Durable steel construction made for long-term shop use
- Box-end wrench required for leverage (not included)
- Optimized for clean, damage-free installs
- Essential for proper drivetrain service and cassette swaps
- Compact size fits easily into shop kits or travel tool rolls
- Item #SHIU1U0
- Compatibility
- Shimano XTR 9t-45t cassette lock rings
- Manufacturer Warranty
- 2 years
- Activity
- bike maintenance
100+ Years in the Making
Founded in Japan in 1921, Shimano has spent over a century earning the trust of riders at every level. Their precision engineering and relentless drive to innovate have made Shimano components a fixture on trails and roads worldwide.