Walshen 8.5" Scooter Inner Tube 50/75-6.1 Bent 90° Valve — Thickened Butyl for Gotrax & Xiaomi Rear Wheels

If your electric scooter uses an 8.5×2 (50/75-6.1) rear tire and has a valve stem angled toward the outside, this Walshen replacement inner tube provides a direct-fit option. It’s made from reinforced butyl rubber to hold air longer than thinner alternatives and uses a 90° bent valve to simplify pumping when the valve is hard to reach. Use this tube when you want to restore pneumatic ride quality or swap out a worn or punctured tube on compatible rear wheels.

How will a bent valve tube make inflation easier?

The 90° bent valve reorients the stem so a pump can connect without bending hoses or removing wheel hardware. That angle reduces strain on the valve base and makes it simple to attach a gauge or electric pump, especially on tight scooter hubs.

• 90° stem points outward for straightforward pump access
• Reduced risk of damaging the valve during inflation
• Fits common rear-wheel orientations on Gotrax and Xiaomi models

What performance differences can I expect compared with solid tires?

Pneumatic inner tubes deliver cushioning and better traction compared with solid or foam replacements. This Walshen tube’s hollow butyl construction adds compliance for bumps and gives more predictable braking and cornering feedback.

• Thicker butyl compound increases air retention and ride comfort
• Hollow structure improves shock absorption and control
• Anti-slip tread compatibility preserves traction on wet or rough surfaces

Which scooters and wheels are compatible with this 8.5×2 tube?

The Walshen 50/75-6.1 inner tube is intended for 8.5-inch rear wheels that accept a bent stem valve. It is commonly used in many Gotrax and Xiaomi scooter models (including Gotrax GXL V2 and XR), but you should confirm your wheel and valve direction before ordering.

• Designed for 8.5×2 (50/75-6.1) rear tire sizes
• Compatible with Gotrax GXL V2, XR and many Xiaomi rear wheels
• Check that your existing valve stems point outward like a 90° bent valve

How durable and easy to maintain is this replacement tube?

Made from thickened butyl rubber, the Walshen tube resists air loss better than thinner alternatives and tolerates repeated inflation cycles. Standard puncture repairs are possible; use a patch kit if you want to extend service life after small leaks.

• Thicker butyl rubber boosts air-holding performance by about 20%
• Compatible with conventional repair patches for small punctures
• Hollow design remains flexible under bending and braking loads

Who is this for? This Walshen bent-valve inner tube is for scooter owners who need a direct replacement for an 8.5×2 rear wheel with an outward-pointing valve. It’s ideal for riders restoring ride comfort after a puncture, those who prefer pneumatic traction over solid tires, and anyone who wants easier inflation access on Gotrax, Xiaomi and compatible electric scooters. Before purchase, verify the 50/75-6.1 size and confirm your scooter’s valve orientation matches a 90° bent stem to ensure proper fit and function.