Walshen 8.5 x 2 Scooter Inner Tube 50/75-6.1 Rear 90° Bent Valve Thick Butyl Improved Air Retention

Walshen 8.5 x 2 bent-valve inner tube is a thicker butyl replacement tube designed to fit 50/75-6.1 (8.5" x 2") rear wheels on many Xiaomi, Gotrax and similar electric scooters, with a 90° bent valve for easier inflation.

When the rear tube on your e-scooter loses air or gets punctured, a direct-fit replacement tube matters for safe, stable riding and quick repairs. This Walshen tube is molded from thicker butyl rubber for improved air retention, shaped to match 8.5" x 2" (50/75-6.1) tires, and fitted with a 90° bent stem so the valve points outward for simpler pump access. It’s intended as a pneumatic alternative to solid tires, restoring better shock absorption and handling.

How do I know this tube fits my scooter?

Measure your tire size printed on the sidewall — it should read 50/75-6.1 or 8.5 x 2. Also confirm the valve orientation: this model uses a bent (90°) stem meant for rear wheels where the valve head faces outward. If your current tube valve is straight or faces inward, this bent-valve tube may not align.

• Fits 8.5" x 2" tires labeled 50/75-6.1
• Commonly compatible with Xiaomi and Gotrax rear wheels
• Check valve direction; this tube uses a 90° outward-pointing stem

What performance changes should I expect after replacing my tube?

Replacing a worn or punctured solid or thin tube with this thicker butyl inner tube will generally improve ride comfort and control. The hollow pneumatic construction absorbs small bumps and improves traction compared with hard tires, while the thicker material helps maintain pressure longer between pumps.

• 20% better air retention versus thinner tubes
• Improved shock absorption for smoother rides
• Hollow, flexible structure enhances turning and braking stability

How does the 90° bent valve make maintenance easier?

The bent stem positions the valve so a pump or pressure gauge reaches it without removing nearby wheel parts or awkwardly angling tools. That reduces the time and effort to inflate or check tire pressure, especially on rear wheels with limited access.

• Valve faces outward at a right angle for easy pump access
• Simplifies inflating on the scooter without disassembly
• Compatible with standard pump heads and gauges

What safety or handling considerations should I keep in mind?

Always confirm the tube size and valve orientation before installation and inflate to the manufacturer-recommended pressure for your tire. While pneumatic tubes give better control than solid tires, proper inflation and regular checks are essential for safe braking and cornering.

• Match tire and tube sizes exactly to avoid pinch flats
• Inflate to the scooter tire’s recommended PSI range
• Inspect for cuts or pinch damage when installing

Who is this for: riders who need a reliable rear inner tube replacement for 8.5" (50/75-6.1) e-scooter wheels — especially owners of Xiaomi, Gotrax and similar models who want easier inflation, better air retention, and improved handling compared with worn or hard tires. It’s ideal for commuters and recreational riders who prefer pneumatic tires’ comfort and control and need a 90° bent valve for convenient maintenance.