Boom Racing 1.9 Dual Stage Soft/Hard Foam Insert 4.19in 106mm BRTR29000SH

This is a pair of Boom Racing dual stage foams for 1.9" x 4.19" RC crawler tyres. They are two stage foams, outside is open cell and inside is closed memory cell.

Specifications

• Outer Firmness: Soft
• Inner Firmness: Hard

Size

• Open foam: 103.0mm x 36.5mm
• Close foam: 74.0mm x 29.5mm

Includes

• 2pcs 4.19" Dual Stage Foam Insert Soft Outer/Hard Inner