A black VP 1-1/8" headset pairing a 44 mm OD semi-integrated lower cup with a standard 34 mm threadless upper cup. This headset combines a semi-integrated lower cup with a standard external upper cup, for frames built that way.

• Semi-integrated lower cup, 30 mm ID / 44 mm OD
• Standard threadless upper cup
• 1-1/8"
• Semi-cartridge bearings
• 29.1 mm stack height

The headset is the bearing set that lets the fork and bars turn smoothly in the frame. A worn or loose headset shows up as a knock under braking or steering that feels notchy.

Headsets are frame-specific, so check the steerer size and every figure against your frame and fork before ordering. The dimensions are published exactly as the supplier lists them: Lower cup 30 mm ID / 44 mm OD; upper 28.6 / 34 OD / 30 mm ID; H 29.1 mm. The supplier doesn't give an SHIS code, so we haven't listed one. Fitting needs a headset press and a crown race tool.

Grease the bearing seats and the crown race before fitting, and set the preload so the fork turns freely with no play when you rock the bike with the front brake on.

Not sure it fits your bike? Send us the make, model and year before ordering and we'll confirm.