IDEAL FOAM SETUP FOR THE KLR/X4 AND OTHER NARROW 1.9 TIRES.  
 
Unique Waterproof and flow through 2 stage foam insert design with a waterproof closed cell inner ring for exceptional side-hill control, and a unique outer waterproof and flow through web like foam for exceptional drive feel. 
Use KLR/X4 Halo WebWrap foams with NARROW 1.9 name brand tires such as Voodoo, Pitbull, ProLine, RC4WD, and others.