View 1 Photo View 0 Videos Rockwell RM9-145A Mainshaft 2ND Gear 60 Teeth 20 Spline 9 Speed Direct Drive $70.10 USD MAINSHAFT 2ND GEAR 60 TEETH 20 SPLINE ROCKWELL RM*** 9 SPEED DIRECT DRIVE ConditionNewFits To Make(s)ROCKWELLFits To Model(s)RM9-145AStock NumberINC 3892G5025 MLS Number14182616CategoryTransmission Parts Last Updated3/20/2026 LocationJackson, MS, US Sold ByLKQ Heavy Truck (855) 905-___ SHOWNUMBERCall Seller Email Seller Save More Info