【44MM SEMI-INTEGRATED HEADSET】 This 4444S bike headset is designed around the ZS44 standard, with a 44mm frame head tube specification. The semi-integrated design places the headset cups inside the head tube, making it suitable for compatible mountain bike and road bike frames using the corresponding headset standard.
【SHIS SPECIFICATIONS】 The headset uses ZS44/28.6 for the upper and ZS44/30 for the lower, designed for a straight 1-1/8"" fork steerer. The 28.6mm upper steerer specification and 30mm crown race specification should be checked against your frame and fork before ordering for proper compatibility.
【4444S CODE EXPLAINED】 The 4444S designation refers to the 44mm upper and lower cup/bearing outside diameter configuration and a straight-tube fork. For accurate fitment, use the SHIS specifications ZS44/28.6 | ZS44/30 rather than relying on the 4444S code alone when selecting a replacement bicycle headset.
【ALUMINUM ALLOY CONSTRUCTION】 Made from aluminum alloy, this mountain bike headset is designed to provide a lightweight and durable replacement option for compatible bicycle headset assemblies. The headset components are designed for everyday cycling and are suitable for compatible straight-steerer bike frames.
【REPLACEMENT HEADSET KIT】 Includes 1 bike headset kit for replacing a compatible headset assembly. Before installation, confirm the frame head tube, fork steerer, crown race and headset type match ZS44/28.6 | ZS44/30. Proper specification matching is important because different headset standards may use similar-looking dimensions.
