The CEMA SRC-HS-JS03 is a sealed cartridge headset bearing sized 51.8 x 40 x 8mm with a 45°/45° contact angle, built for 1.5" headset applications. It's a direct cartridge swap for a worn or notchy headset bearing of this exact size — no adjustment, no races to press, just drop it in.
Manufacturing defects are covered under CEMA's warranty terms. Return the bearing to Tune Cycles and we'll manage the claim on your behalf — no need to contact CEMA directly. This is in addition to your rights under the Australian Consumer Law.
  • Dimensions: 51.8mm OD x 40mm ID x 8mm height
  • Contact angle: 45°/45°
  • CEMA SRC chrome steel construction
  • Double-sealed design keeps lubricant in and dirt/moisture out
  • Direct cartridge replacement — no machining or pressing of races required
  • Model: SRC-HS-JS03
Outer diameter51.8mm
Inner diameter40mm
Height8mm
Contact angle45°/45°
MaterialChrome steel
SeriesCEMA SRC-HS
ModelSRC-HS-JS03
SKU BPW-0872
Model # 0872
Barcode # 4712910906384
Brand CEMA

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