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: Medium
- Outer: Soft
Size:
- Inner:
- Overall diameter: 85.5mm
- Inner diameter: 54.5mm
- Width: 36.5mm
- Outer:
- Over diameter: 118.5mm
- Width: 46.5mm
Includes:
- 2x Outer Open Insert for 4.75 Soft Compound
- 2x Extra Wide Closed Insert for 4.75 Medium Compound