FSA helps you choose your replacement headset

Enter four measurements and out pops your replacement headset bearing

(Image credit: FSA)

Headset replacement is one of the most confusing areas of bike tech. Whereas bottom brackets and axles each come in a few possible variants, the range of options for headset bearings is vast, with every bike seeming to use something a bit different from every other bike and differences between bearings not at all obvious.

Does an Orbit 1.5E ZS replace an Orbit 1.5 ZS SC or a Big Fat Pig 1.5R replace a Big Fat Pig? (Yes, that really is a headset model name).

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Paul Norman

Paul started writing for Cycling Weekly in 2015, covering cycling tech, new bikes and product testing. Since then, he’s reviewed hundreds of bikes and thousands of other pieces of cycling equipment for the magazine and the Cycling Weekly website.

He’s been cycling for a lot longer than that though and his travels by bike have taken him all around Europe and to California. He’s been riding gravel since before gravel bikes existed too, riding a cyclocross bike through the Chilterns and along the South Downs.