ZG= Lightweight MX Q/A kits with gold chain. Z= Lightweight MX Q/A kits with non-gold chain. RG= Q/A 520 Race Conversion 520 kit with gold race chain. R= Q/A 520 Race Conversion 520 kit with non-gold race chain. C= Conversion - Lightweight 530 sealed-ring conversion vs. heavier OE. WG= Warranty - 20,000 Mile Street Mfg. Warranty kit, with OE geared steel sprockets and gold chain. W= Warranty - 20,000 Mile Street Mfg. Warranty kit, with OE geared steel sprockets and non-gold chain. OEM Gearing: 15-45. OEM Ratio:3.00 Q/A Gearing: 15-48 Q/A Ratio: 3.20 |