Cycling Bargains - BikeInn Park Tool 789 1-1/2´´ Zs 55.95mm Head Tube Reamer Head | Hot deals section, massive stocks, great prices & easy returns. (INN151502404)
BikeInn Park Tool 789 1-1/2´´ Zs 55.95mm Head Tube Reamer Head | Hot deals section, massive stocks, great prices & easy returns.
Product Description
Park Tool 789 1-1/2 ZS 55.95mm Head Tube Reamer HeadAchieve unparalleled precision in your workshop with the Park Tool 789 Head Tube Reamer Head, the definitive tool for professional bicycle frame preparation. As a critical component in the Maintenance and Headset Tools category, this reamer head is engineered for mechanics who demand perfect component fitment and flawless performance. It is the gold standard for accurately machining a frame´s head tube to the exact specifications required for modern 1-1/2 Zero Stack (ZS) headset systems.The primary benefit of using the Park Tool 789 is the guarantee of a perfect, creak-free headset installation. By precisely reaming the inner diameter of the head tube, this tool creates an ideal, uniform surface for pressing in headset cups. This process eliminates issues arising from manufacturing tolerances, paint overspray, or slightly ovalized head tubes, which are common causes of headset binding, premature bearing wear, and frustrating noises. Investing in this level of preparation protects expensive frames and headset components from damage during installation and ensures a smooth, reliable steering assembly for the life of the bike.Engineered for accuracy and durability, the 789 is an indispensable part of any professional service center or for the serious home mechanic building a high-end bicycle. Its precise cutting action removes just the right amount of material to achieve the perfect dimension without compromising the integrity of the frame.Technical Specifications and ApplicationThe Park Tool 789 is specifically designed for the modern 1-1/2 Zero Stack standard, ensuring compatibility with a wide range of contemporary mountain and road bike frames.Park Tool 789 milling cutter.55.95mm(1 1/2 ´´ZS std).-Park Tool 789 55.95 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.FEATURES:SHIS terminology:The 789 is used for upper and lower head tubes accepting the ZS56 or EC56 headsets.As a crucial component of Park Tool´s modular head tube servicing system, the 789 reamer head is designed to integrate seamlessly with the HTR-1 and HTR-1B Headtube Reamer and Facer sets. This compatibility ensures a stable, perfectly centered cutting operation. For a complete frame preparation that includes both reaming the inside diameter and facing the outer edges of the head tube, it is used in conjunction with the 690-XXL Facing Cutter and the 750 Centering Cone Adaptor. This comprehensive approach guarantees the entire head tube is perfectly dimensioned and aligned for optimal headset function.For bike shops, custom frame builders, and meticulous mechanics, the Park Tool 789 is the essential solution for preparing 1-1/2 ZS head tubes. Trust in the precision that Park Tool is renowned for and deliver a superior, silent, and long-lasting headset installation every single time
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