Overview Reviews Product Description Heavy duty MXZ1 Mini Racing chains made for mini MX and SX racing MXZ1 chains feature Chromoly steel construction with seamless rollers and bushings Oversized special alloy pins for added strength. RK GB428MXZ1 X 100 LINKS Product Videos Custom Field Product Reviews Write a Review Write a Review × RK Rk 428 Mxz1 Chain Gb428Mxz1100 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *