Park Tool BBT-49.2 Bottom Bracket Tool

Compatible with 16-notch bottom bracket tool fittings with a nominal outer diameter of 39mm

Fits Shimano XTR BB93, Dura-Ace BB9000, & Token

Precision CNC machined aluminum, anodized and laser engraved for easy identification

Ratchet/torque wrench compatible 3/8\" drive

Retail Price: $ 25.95

Wholesale Price: Inquire Now

Park Tool threaded bottom bracket cup shell external removal install

Park Tool BBT-49.2 Bottom Bracket & Chainring Lockring Tool

Bicycle bottom brackets occasionally require removal for service, replacement, or upgrading. The Park Tool BBT-49.2 is a precision CNC-machined aluminum tool for the installation and removal of 16-notch threaded external bearing bottom brackets with a 39mm outer diameter, including Shimano XTR BB91/3/4 & Dura-Ace R9100.

The BBT-49.2 can also remove the chainring lockring on the Shimano STEPS E6000, E6002, and E6050 e-bike systems, and works as a replacement for the Shimano TL-FC38 tool.

Anodized for easy identification and featuring a 3/8" drive for use with a ratchet handle or torque wrench for precise installation. Manufactured in-house by Park Tool, the most trusted name in bicycle tools and repair equipment for over 50 years.

Park Tool: Your Guide to the World of Bottom Brackets

Confused by what bottom bracket tool you need? You're not alone. Between all the standards, installation methods, and tool fittings, it can all seem a bit overwhelming. Whatever you do need, Park Tool makes over 40 different tools to aid in the removal and installation of bottom brackets. Here's how to determine the correct tool for you, if you have an threaded or thread-together bottom bracket:


Count Splines/Notches Remove the crank and inspect the bottom bracket shell for tool fittings, which can be notches or indentations on the outer perimeter, splines on the inside perimeter, or pin holes on the face. Count the number of tool fittings on the cup.	Measure Diameter Next use a caliper to measure the diameter or width of the tool fittings. For external notches, simply measure the outer diameter of the bottom bracket cup or adapter. Take the measurement in millimeters.	Select Tool The BBT-49.2 is for 16-notch, 39mm tool fittings. Here are some tools we offer for this and a few similar tool fittings:


	Park Tool BBT-49.2	Park Tool BBT-59.2	Park Tool BBT-69.2	Park Tool LRT-2	Park Tool LRT-4
Tool Type	Bottom Bracket & Chainring Lockring	Bottom Bracket	Bottom Bracket	Chainring Lockring	Chainring Lockring
Tool Fitting	16 Notches	16 Notches	16 Notches	16 Notches	16 Notches
Outer Diameter	39mm	41mm	44mm	54mm	41mm
Typical Brands & Models	Shimano XTR BB91/3/4, Dura-Ace R9100 bottom brackets, Shimano STEPS E6000, E6002, and E6050 E-Bike chainring lockrings	Shimano XT MT800, Ultegra BBR60/72	Shimano (incl. BB80, BB5700, XT BB70, BB51), Campagnolo, SRAM/Truvativ GXP, Chris King, FSA MegaExo, Hope, Race Face X-type, Surly, Wheels Mfg, Fulcrum, some disc brake lockrings	Shimano STEPS E6100, E7000, E8000 and E9000 E-Bike Systems	XTR 9120, XT 8120, MT900, and other Shimano direct mount systems

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. Just like our other 500+ tools, our bottom bracket tools are a product of our decades of experience and expertise in the industry, in the shop and on the trail.

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Park Tool BBT-49.2 Bottom Bracket Tool

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Product Description

Park Tool BBT-49.2 Bottom Bracket & Chainring Lockring Tool

The BBT-49.2 can also remove the chainring lockring on the Shimano STEPS E6000, E6002, and E6050 e-bike systems, and works as a replacement for the Shimano TL-FC38 tool.

Park Tool: Your Guide to the World of Bottom Brackets


Count Splines/Notches Remove the crank and inspect the bottom bracket shell for tool fittings, which can be notches or indentations on the outer perimeter, splines on the inside perimeter, or pin holes on the face. Count the number of tool fittings on the cup.	Measure Diameter Next use a caliper to measure the diameter or width of the tool fittings. For external notches, simply measure the outer diameter of the bottom bracket cup or adapter. Take the measurement in millimeters.	Select Tool The BBT-49.2 is for 16-notch, 39mm tool fittings. Here are some tools we offer for this and a few similar tool fittings:


	Park Tool BBT-49.2	Park Tool BBT-59.2	Park Tool BBT-69.2	Park Tool LRT-2	Park Tool LRT-4
Tool Type	Bottom Bracket & Chainring Lockring	Bottom Bracket	Bottom Bracket	Chainring Lockring	Chainring Lockring
Tool Fitting	16 Notches	16 Notches	16 Notches	16 Notches	16 Notches
Outer Diameter	39mm	41mm	44mm	54mm	41mm
Typical Brands & Models	Shimano XTR BB91/3/4, Dura-Ace R9100 bottom brackets, Shimano STEPS E6000, E6002, and E6050 E-Bike chainring lockrings	Shimano XT MT800, Ultegra BBR60/72	Shimano (incl. BB80, BB5700, XT BB70, BB51), Campagnolo, SRAM/Truvativ GXP, Chris King, FSA MegaExo, Hope, Race Face X-type, Surly, Wheels Mfg, Fulcrum, some disc brake lockrings	Shimano STEPS E6100, E7000, E8000 and E9000 E-Bike Systems	XTR 9120, XT 8120, MT900, and other Shimano direct mount systems

TRUSTED SINCE 1963

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