• Park Tool BBT-118 8-notch bottom bracket wrench
  • Park Tool BBT-118 fitted to a bottom bracket
  • Park Tool BBT-118 tightening a lockring with a torque wrench
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PARK TOOL

PARK TOOL BBT-118 Bottom Bracket Wrench (Bosch)

Manufacturer’s ref.: BBT-118
The PARK TOOL BBT-118 Bottom Bracket Wrench (Bosch) is a robust tool precision-machined from 4140 steel for removing and installing components with an 8-notch... Read more
54,99 €
54,99 €
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Description

The PARK TOOL BBT-118 Bottom Bracket Wrench (Bosch) is a robust tool precision-machined from 4140 steel for removing and installing components with an 8-notch interface. Its extra-deep body accommodates wide spindles, while its low-profile walls engage recessed lockrings.

Three drive options — a 3/8" square drive, 1" hex drive and 36 mm wrench flats — help tackle even the most stubborn components using the tools available in your workshop.

Compatible with Shimano® Octalink® drive-side cups with external notches, ISIS Drive cups (including Truvativ® and Bontrager®), and Bosch® Generation 3, 4 and 5 e-bike chainring lockrings and Specialized® Levo Brose lockrings.

Integrated threading also allows use of the BBT-RS retaining system or GPS-1 guide pins (sold separately) for greater stability.

⚠️ Not approved for use with powered impact tools.

Technical information

Brand: Park Tool
Manufacturer’s reference: BBT-118
Category: Bicycle tools - Cranks and e-bikes
Tool type: 8-notch bottom bracket / lockring tool
Compatibility: Shimano external Octalink, ISIS Drive (Truvativ, Bontrager), Bosch Gen 3/4/5, Specialized Levo Brose
Drive options: 3/8" square drive, 1" hex drive, 36 mm wrench flats
Internal dimensions: Nominal inside diameter 37.6 mm, outside diameter 42.7 mm
Internal clearance: 31.14 mm deep x 22.48 mm diameter
Material: Precision-machined 4140 steel
Compatible accessory: BBT-RS system or GPS-1 pins (sold separately)
Warning: Not approved for use with powered impact tools
Made by: Park Tool, USA
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Pricing information

*Recommended retail price from supplier in September 2026