Amazon.com : 20 inch Bicycle Tire Liner for BMX Fat tire Bikes, 20” X 1.95 – 2.5”, no Package RhinoDillo Green Single (1 Liner) : Sports & Outdoors
110/90-16 Off-Road White Wall Speedster Fat Tire 20X4.0“ Bike Tire Non-slip Snow Bike Tyre For All Ebike - AliExpress
fat tire 20x4 Rim 80mm Width. 20 Inch. Single Layer With Rim Liner — Fat Tire House
Tyre liners for 20x4.0, 26x4.0 inch wheel, Fat tire bikes.
Amazon.com : 2 Pack 20" E-Bike Fat Tires Heavy Duty 20 x 4.0 (102-406) Plus 20" Bike Tubes 20 x 3.5/4.0 AV32mm and 2 Nylon Rim Strips Compatible with 20x4.0 Electric Bike/Mountain
2-Pack) CALPALMY 20x4.0 Inner Tubes - 20" Fat Tire Tubes for Mountain Bikes and E-Bikes with 32mm Schrader Valve - Includes 2 Tire Lever - Yahoo Shopping
20"×4" Kevlar Fat Bike Tyre - Hycline - Hycline
Universal Cycles -- Mr. Tuffy XL Series Tire Liners [MRT2XL, MRT3XL, MRT4XL]
New bicycle fat bike tire 26x4.0 20x4.0 snow ATV beach bike tyre electric tires accessories folding bead high quality - AliExpress
Utah Trikes - Mr. Tuffy 4XL Fat Bike Tire Liner 26/29x4.1-5.0 - Single
20x4 Fat Tire High-Performance - (2-Pack) Designed to Improve Speed & Minimizes Drag on Hard-Pack or Paved Terrain, Honeycomb Tread for Virtually Zero Rolling Resistance, Ultimate Speed & Traction - Walmart.com