Ball Bearings for OS Engines FS II Surpass With Pump 91 and 91 Featuring Double Sided Rubber Seals Low Friction Grease Chrome Steel Construction ABEC 1 Precision by VXB Set of Two Bearings

Ball Bearing Kit for OS Engines FS II Surpass 91 With Pump
✔️ Sealed Chrome Steel Bearings Set for RC 4 Stroke Engines

This is a matched set of two sealed ball bearings made to replace and refresh the bearings in OS Engines FS II Surpass 91 RC four stroke engines with pump, helping restore smooth rotation, stable RPM, and reliable engine performance.

✅ Pack size: set of 2 ball bearings
✅ Designed for OS Engines FS II Surpass 91 with pump
✅ Double sided rubber seals to keep grease in and dirt out
✅ Pre-lubricated with low friction grease for smooth startup
✅ Corrosion resistant chrome steel races
✅ High chromium 52100 steel balls for durability under load
✅ Low friction steel cage for stable high speed rotation
✅ ABEC-1 precision suitable for RC engine applications
✅ Brand: VXB

💡 Why are sealed ball bearings important in RC four stroke aircraft engines?
Sealed ball bearings help RC engines run smoother and last longer under vibration and heat.

• Rubber seals protect against fuel residue, dust, and debris

• Proper grease reduces friction and heat at high RPM

• Matched bearing sets help maintain balance and smooth power delivery

• Steel construction handles continuous engine loads with confidence

This bearing kit is a handy choice when maintaining or rebuilding an OS FS II Surpass 91 engine to keep it running smooth, reliable, and flight-ready.