Park Tool LRT-3 Chainring Lockring Tool
Best specialized tool for electric bike motor maintenance.
This is the definitive tool for servicing modern direct-mount chainrings without the headache of incompatible standards. By combining 4-notch and 8-notch compatibility into one durable steel piece, it eliminates the need for a cluttered toolbox. It’s a specialized investment, but one that makes high-end drivetrain maintenance feel surprisingly straightforward.
$27.95
at
Cambria Bike
Who it's for
- Home mechanics working on Specialized or Cannondale e-bike drive systems
- Professional bike shop technicians requiring reliable tools for daily repairs
- Detail-oriented riders who prioritize exact torque settings for component safety
Who should skip it
- Multi-bike owners looking for a universal e-bike motor tool
- Minimalist cyclists who prefer integrated handles on their specialty tools
- Budget-conscious DIYers seeking the most affordable entry-level maintenance options
Performance breakdown
Build Durability
Heat-treated 4140 steel ensures this tool survives a lifetime of shop abuse.
Compatibility Range
Dual-notch design covers the vast majority of modern modular crankset standards.
Torque Precision
The 36mm hex drive allows for exact, reliable torque wrench application.
Corrosion Resistance
Plated finish effectively prevents rust in humid or high-moisture workshop environments.
Ease of Engagement
Snug, secure fit minimizes the risk of slipping during high-torque removal.
Shop Efficiency
Consolidates multiple specialized tools into one streamlined, highly effective piece.
Key Specs
Tool Type
Chainring lockring tool
Material
4140 heat-treated steel
Drive Size
3/8 inch
Compatibility
Specialized, Cannondale, and FSA modular cranks
Lockring Compatibility
47–48mm outside diameter, 4 or 8 notches
Number of Functions
2
Number of Pieces
1
Know before you buy
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Ask Metto anything about the Park Tool LRT-3 Chainring Lockring Tool before you decide.
