Quick Slicks FL91 tires are designed specifically for Flyslot Racing Trucks.
Multiple silicone compounds are available - this is the X-FIRM compound (part number: FL91XF).
Note: Sold in packages of two (2) pairs. You will need two (2) pairs to replace the rear tires.
Outer Diameter (O.D.): 1.028" (26.10mm)
Width (Contact Patch): .378" (9.60mm)