Crazy Crawler LaserFoam "FT Pro Spur Master" 1.9" Foam Crawler Tire Insert (4)

The Crazy Crawler LaserFoam "FT Pro Spur Master" is a red lateral-stability ring for the FT Pro tire insert system, designed for 4.75" crawler tires. This package includes four Spur Master insert rings.

Product Details

• Material: Closed Cell, WP magic (hard)
• Points: 28
• Outside diameter: 114 mm
• Inner diameter: 50 mm
• Width: 10mm
• Weight: 4g ea

FT Pro System

Each tire uses one Spur Master ring supported on both sides by FT Pro "Basic" or "Heavy Duty" rings, which are purchased separately. The Spur Master has deeper, steeper-angle prongs and is cut slightly smaller than the Basic and Heavy Duty support rings to help prevent contact-patch distortion and tire over-inflation.

Choose Basic support rings for harder compound tires, lighter trucks under 7 pounds, or maximum traction. Choose Heavy Duty support rings for softer compound tires or heavier rigs requiring more support. Basic and Heavy Duty support rings are available in 15mm and 20mm widths.

Support Ring Combinations

• 42-45mm wide tire: Two 15mm support rings with one Spur Master create a 40mm wide insert.
• 47-50mm wide tire: One 15mm and one 20mm support ring with one Spur Master create a 45mm wide insert.
• 52mm + wide tire: Two 20mm support rings with one Spur Master create a 50mm wide insert.

The insert should ideally be slightly narrower than the tire width. Mix and match support rings as needed.

Includes

• (4) FT Pro Spur Master Insert Rings