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Park Tool BBT-19.2 Bottom Bracket Tool

Park Tool BBT-19.2 Bottom Bracket Tool

Regular price $35.99 USD
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  • Used to remove and install external bearing crankset bottom brackets
  • Work with external bearing crankset bottom brackets, including: Shimano BB80B, Shimano BB80D, Shimano BB4600, Shimano XT BB70B, Shimano BB52B, and previous external bearing threaded cups
  • Fits many external threaded types for: Campagnolo, Fulcrum, Chris King, Hope, Surly, Wheels, and more
  • Fits bottom brackets with 16 external notches and an outside diameter of 44mm

Park Tool threaded bottom bracket cup shell external removal install

Park Tool BBT-19.2 Bottom Bracket Tool

Bicycle bottom brackets occasionally require removal for service, replacement, or upgrading. The Park Tool BBT-19.2 is used to remove and install 16-notch threaded external bearing bottom brackets with a 44mm outer diameter, including:

  • Shimano BB80, BB5700, XT BB70, BB51, and previous external bearing threaded cups
  • Campagnolo
  • SRAM/Truvativ GXP
  • Chris King
  • FSA MegaExo
  • Hope
  • Race Face X-type
  • Surly
  • Wheels Manufacturing
  • Fulcrum

The BBT-19.2 is made from high precision, hardened cromoly steel, and features a 3/8" drive fitting and 1" wrench flats, allowing the tool to be driven using a wrench, socket, or 3/8" drive torque wrench. Manufactured by Park Tool, the most trusted name in bicycle tools and repair equipment for over 50 years.

NOTE: due to the shallow engagement of their tool fittings, the BBT-19.2 is not recommended for 16-notch disc brake rotor lockrings. Instead use the Park Tool BBT-9 or BBT-69.2.

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:

measure bottom bracket specifications standards

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 bottom bracket specifications standards

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.

Park Tool BBT-69.2 Tool Fitting Example

Select Tool

The BBT-19.2 is for 16-notch, 44mm tool fittings. Here are some tools we offer for this and a few similar tool fittings:

Park Tool BBT-9
Park Tool BBT-19.2
Park Tool BBT-69.2 Park Tool BBT-49.2 Park Tool BBT-59.2 Park Tool BBT-79
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Price $38.95 no data no data no data no data no data
Tool Fitting 16 Notches 16 Notches 16 Notches 16 Notches 16 Notches 12/24 Notches
Outer Diameter 44mm 44mm 44mm 39mm 41mm 46mm
Typical Brands & Models 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 (incl. BB80, BB5700, XT BB70, BB51), Campagnolo, SRAM/Truvativ GXP, Chris King, FSA MegaExo, Hope, Race Face X-type, Surly, Wheels Mfg, Fulcrum 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 XTR BB91/3/4, Dura-Ace R9100, Shimano STEPS Hollowtech II e-bike motor lockring Shimano XT MT800, Ultegra BBR60/72 SRAM DUB, Race Face Cinch, Rotor BSA30, Zipp Vuma, Hawk Racing BB3086
Park Tool original bike shop

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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