Boom Racing 1.9 Extra Wide Dual Stage Open (Soft) / Closed (Hard) Cell Foam Insert for 4.75in (110mm) RC Crawler Tires (2)
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This is a set of Extra Wide cell foam inserts. They are made for Boom Racing's extra wide ProBuild and KRAIT wheels.
Dual-stage foam inserts for 1.9x4.75" (120mm tall) RC Crawler tires.
Soft outer foams help the tires conform to the surface. A firmer inner closed-cell improves sidehill performance and maintains a better sidewall structure. They are more durable and longer-lasting.
Softness:
Inner: Hard
Outer: Soft
Size:
Inner:
Overall diameter: 85.5mm
Inner diameter: 54.5mm
Width: 36.5mm
Outer:
Over diameter: 110mm
Width: 46.5mm
Includes:
2x Outer Open Insert for 4.75 Soft Compound
2x Extra Wide Closed Insert for 4.75 Hard Compound