Top Shelf 1 1/8 Inch Bicycle Headset Bearing Featuring Premium Si3n4 Ceramic Rollers And Heavy Duty Double Sealed Steel Races For Hella Smooth Steering Upgrades That Drop Straight In

Lightweight 1 1/8 bicycle headset bearing conversion
✔️ Steel sealed design with Si3n4 ceramic rolls for 30.15x41x6.5mm

This double sealed headset bearing replaces worn factory units in standard straight steerer tubes. You drop it right onto your front fork tube to cut chatter and get crisp turns on mountain trails or city streets.

✅ Model MH-P03K and K336-2RS designation ✅ Inner ring measures 30.15mm or 1.19 inches across ✅ Outer shell sizes 41mm or 1.61 inches wide ✅ Bearing thickness sits at precisely 6.5mm or 0.26 inches ✅ Si3N4 ceramic beads paired with tough steel seals ✅ Double closed design keeps grit out while you ride

💡 What makes ceramic bike headset bearings a handy choice over standard steel ones?

Switching to silicon nitride rolling elements cuts friction inside your head tube assembly. - Lower rolling resistance delivers buttery smooth handling on rough terrain - Non magnetic ceramic material stops rust buildup in humid conditions - Hardened surface resists wear so your fork spins true mile after mile - Direct swap fit removes binding without needing special installation tools ✝️