XLPower Stratos 200 Bearing 4×9×4: XL20BB070

It's a bearing. It's 4mm by 9mm by 4mm. And yet, somehow, your entire helicopter is currently grounded because this one tiny ring of steel has decided to sound like a bag of spanners in a washing machine. Such is the glamour of RC heli ownership.

Why You Want It

Because a gritty, notchy bearing in a Stratos 200 doesn't just sound tragic — it eats flight time, vibrates your FBL unit into an existential crisis, and turns silky tail response into a lucky dip. The XL20BB070 is the genuine XLPower replacement, machined to the tolerances your Stratos was born with. Swap it in, and your heli goes back to purring instead of protesting. Cheaper than a crash, quicker than therapy.

Specs

• Model Compatibility: XLPower Stratos 200 (it's loyal, not versatile)
• Part Number: XL20BB070 (the one from the exploded diagram you squinted at)
• Dimensions: 4mm bore × 9mm OD × 4mm wide 

In the Box

• 1× XLPower Bearing 4×9×4 (XL20BB070)
• A renewed sense of mechanical serenity

Disclaimer

Bearings are consumables in the same way that rotor blades are "occasionally sacrificial". If yours has failed, inspect its neighbours while you're in there — they gossip, and failure loves company. A drop of bearing oil after installation keeps the new one happy; a hammer does not.

Still Here?

For less than the price of a fancy coffee, your heli stops sounding like a cement mixer. Add to cart — your tail rotor has suffered enough.