SB401 Center Gear Diff Case-77T(*1pcs). Cage(*1pcs)The Black material is typically harder than the grey. Spurs should last a bit longer with the black..
"Carpet" S1V3 FM -5mm Carbon Fiber Narrow Chassis (Low roll center)**NOTE: For use with V4R, you will need the narrow "Carpet" RF suspension mount. PR..
"Carpet" S1V3 FM Aluminum CNC "Narrow RR" Suspension Block (Low roll center)Does fit newer kits, but may need top spacer between RR block and trans ca..