Park Tool BBT - 59.3 Bottom Bracket Tool - 16 - Notch - Park Tool
Park Tool BBT - 59.3 Bottom Bracket Tool - 16 - Notch - Park Tool
Park Tool BBT - 59.3 Bottom Bracket Tool - 16 - Notch - Park Tool

Park Tool BBT-59.3 Bottom Bracket Tool 16-Notch Shimano Ultegra XT

$38.00
SKU: BBT-59.3
Quantity:
In stock
Pickup available at Stage 21 Bikes Usually ready in 1 hour

Park Tool BBT-59.3 Bottom Bracket Tool 16-Notch Shimano Ultegra XT

Stage 21 Bikes

Pickup available, usually ready in 1 hour

23582 Moulton Parkway
#111
Laguna Woods CA 92637
United States

+19497163363

Park Tool BBT-59.3 Bottom Bracket Tool

16-Notch Tool for Shimano Ultegra & Deore XT Bottom Brackets

The Park Tool BBT-59.3 is a professional-grade bottom bracket tool designed for the installation and removal of 16-notch threaded bottom brackets with larger outer diameters. Precision-machined for exact fitment, it ensures secure engagement with bottom bracket cups—reducing slippage, rounding, and damage during service.

Built to Park Tool’s exacting standards, the BBT-59.3 is ideal for both professional workshops and home mechanicsworking on modern Shimano road and mountain drivetrains.

Key Features & Benefits

  • Genuine Park Tool professional workshop tool

  • Designed for 16-notch threaded bottom bracket cups

  • Precision-machined for secure, slip-free engagement

  • Prevents damage to aluminum and composite BB cups

  • Durable construction for repeated shop use

Compatibility

Fits 16-notch bottom bracket cups with:

  • Major diameter (outside of notches): 41–42 mm

  • Minor diameter (inside of notches): 39 mm

Compatible Bottom Brackets Include:

  • Shimano Ultegra BBR60

  • Shimano Deore XT MT-800

  • Other Shimano 16-notch threaded bottom brackets with matching dimensions

Tool Interface

  • Compatible with 3/8" drive ratchets and torque wrenches

  • Can also be used with a large adjustable wrench

  • Ideal for accurate torque application per manufacturer specifications

Recommended Use

  • Bottom bracket installation and removal

  • Road, gravel, and MTB drivetrain service

  • Shimano Hollowtech II style threaded BB systems

  • Professional bike shop and advanced home mechanic use

Why Choose Park Tool?

Park Tool tools are shop-proven, mechanic-approved, and built to last. The BBT-59.3 delivers precise fit, durability, and confidence when servicing modern Shimano bottom brackets—helping ensure smooth crank rotation and long-term reliability.

An essential tool for clean, damage-free installation and removal of Shimano Ultegra and Deore XT bottom brackets.

FREE Shipping

Free shipping within USA on all orders over $99.

International Orders

For non-oversized packages (almost everything except entire bikes) we ship internationally via the US Postal Service (Priority and Express Mail).

For larger packages we ship via UPS. Time in transit will vary, but most orders will arrive within 5-7 business days after dispatch.

We are unable to provide any currency conversion information, as your bank or credit card will have its own methodology for the exchange rate. You can use websites such as XE.com to get a good calculation as to current exchange rates.

FREE Shipping

Free shipping within USA on all orders over $99.

International Orders

For non-oversized packages (almost everything except entire bikes) we ship internationally via the US Postal Service (Priority and Express Mail).

For larger packages we ship via UPS. Time in transit will vary, but most orders will arrive within 5-7 business days after dispatch.

We are unable to provide any currency conversion information, as your bank or credit card will have its own methodology for the exchange rate. You can use websites such as XE.com to get a good calculation as to current exchange rates.

Got Questions?

We can help. Reach us directly at Stage 21.

Toll Free: 855-949-7433
Local: 949-716-3363

info@stage21bikes.com

STORE HOURS

Mon through Fri 10AM - 5PM
Saturday 12PM - 4PM

Got Questions?

We can help. Reach us directly at Stage 21.

Toll Free: 855-949-7433
Local: 949-716-3363

info@stage21bikes.com

STORE HOURS

Mon through Fri 10AM - 5PM
Saturday 12PM - 4PM

Your Payment is Secure

We use a PCI level 1 compliant system for credit card processing which means that it adheres to the highest standards in the world on server compliance, payment processing, and information privacy.

Your Payment is Secure

We use a PCI level 1 compliant system for credit card processing which means that it adheres to the highest standards in the world on server compliance, payment processing, and information privacy.