Price: $24.95
(as of Mar 18, 2025 10:06:02 UTC – Details)

Product Description

Park Tool bicycle tools repair equipment professional high quality

Park Tool LRT-3 Lockring Tool in use on Cannondale Hollowgram and FSA modular crank lockrings

Park Tool LRT-3 Lockring Tool for Specialized/Cannondale/FSA Chainring Lockrings

Precisely machined for a perfect fit, the Park Tool LRT-3 removes and installs the 4 or 8 Notch, 47-48mm OD direct mount lockring that retains front chainrings found on some Specialized, Cannondale and FSA modular cranks including Specialized S-Works, Cannondale Hollowgram, FSA MegaExo, FSA BB386EVO, & FSA BB392EVO. The LRT-3 features 36mm hex fittings for use with the Park Tool TWB-36 Crow Foot and a torque wrench (each available separately) to achieve proper torque. The heat treated and plated 4140 steel construction ensures durability and long life.

Park Tool LRT-3 Chainring Lockring Tool in use with crow foot and torque wrench

As with every other component found on a bicycle, Park Tool offers a full line of tools for bicycle lockring chainrings, including many of the most popular modular crank and e-bike chainring standards:

LRT-3 Chainring Lockring Tool

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Tool Fitting
8 Notches – 50mm Outside Diameter 16 Notches – 54mm Outside Diameter 4 Or 8 Notches – 47-48mm Outside Diameter 16 Notches – 41mm Outside Diameter 8 Notches – 43.4mm Outside Diameter 16 Notches – 39mm Outside Diameter

Brand/System Compatibility
Bosch Gen 2 E-Bikes Including Active Line (chainrings less than 20 teeth), Performance Line and Performance Line CX models Shimano STEPS E6100, E7000, E8000 and E9000 E-Bikes Some Specialized, Cannondale and FSA modular cranks XTR 9120, XT 8120, MT900, and other Shimano direct mount systems Bosch Gen 3 & Gen 4 E-Bikes Shimano STEPS E6000, E6002, & E6050 E-Bike Systems

Equivalent Tool
Bosch 0275009003 Shimano TL-FC39 Cannondale KT012, FSA E0667 Shimano TL-FC41 no data
Shimano TL-FC38

TRUSTED SINCE 1963

Since our origins in the back of a bike shop in 1963, it has been Park Tool’s sole mission to design and manufacture high-quality tools that empower mechanics and riders of all skill levels to service their bicycles. As with our other 500+ tools, our lockring tools are a product of our decades of experience and expertise in the industry, in the shop and on the trail.

Fits chainring of Specialized, Cannondale and FSA
For lockrings with 47–48mm outside diameter and 4 or 8 notches
Constructed of 4140 heat treated steel and plated for long life