More Images

Item # 789

/ Tools / Frame & Fork

55.95mm Reamer

Reams head tube I.D. to 55.95mm to accept “internal” headset cups with 56.00–56.10mm O.D. (1-1/2 ZS standard). Used with #690-XXL Facing Cutter and #750 Centering Cone Adaptor. Designed for use with the HTR-1 or HTR-1B Headtube Reamer and Facer.

View Product Features

Need service? See our Limited Warranty or get Replacement Parts in a snap.

789 Features

NOTE: For sharpening services of cutting tools see Park Tool Sharpening Services. Always use cutting fluid such as Park Tool CF-2 when machining.

SHIS terminology: The 789 is used for upper and lower head tubes accepting the ZS56 or EC56 headsets.

Compatible Products


HTR-1

Head Tube Reaming and Facing Set


HTR-1B

Head Tube Reaming and Facing Set


HTR-HS

Head Tube Reaming and Facing Handle Set

Stay on the Cutting Edge

Use Park Tool Sharpening Services