An FSA headset bearing: 51.8mm outside, 40mm inside and 7.5mm wide, with a 36/45° contact angle for a 1.5in steerer.

Highlights

  • Outside diameter: 51.8mm
  • Inside diameter: 40mm
  • Width: 7.5mm
  • Contact angle: 36/45°
  • Steerer size: 1.5in
  • FSA code: MR019

Details

Headset bearings wear with rain, road grime and pressure washing, and a rough or notchy bearing makes steering feel vague. Replacing the bearing with the same size and contact angle restores smooth, play-free steering.

Angular contact bearings are directional, so fit each one with the angled face matching the cup or crown race, and grease the seats lightly before fitting. Replacing both bearings together keeps the steering even.

Fit and compatibility

It suits headsets that use a 51.8 x 40 x 7.5mm, 36/45° bearing. Match the outside diameter, inside diameter, width and both contact angles to your old bearing; the numbers are usually printed on the bearing's seal.

Fitting

A headset needs clean, correctly sized cups and the right preload once the stem is fitted. Our workshop can press it in and set it up for you.

If you're not sure it's the right part for your bike, send us the details and we'll check before you order.

FSA warrants its products against defects in materials and workmanship for two years from the original purchase, for the original purchaser. FSA lists this as a wear part, so it's covered for manufacturing defects only, not normal wear.

For a warranty claim, return the item to Tune Cycles with your proof of purchase and we'll manage the claim for you. FSA products come with guarantees that can't be excluded under the Australian Consumer Law, and this cover is in addition to those rights.

  • Outside diameter: 51.8mm
  • Inside diameter: 40mm
  • Width: 7.5mm
  • Contact angle: 36/45°
  • Steerer size: 1.5in
  • FSA code: MR019
Outside diameter51.8mm
Inside diameter40mm
Width7.5mm
Contact angle36/45°
Steerer size1.5in
FSA codeMR019
Quantity1 bearing
SKU BPW-FSA-0319
Model # FSA-0319
Barcode # 4712977691018
Brand FSA
Shipping Weight 0.0800kg
Shipping Width 0.160m
Shipping Height 0.060m
Shipping Length 0.220m