68 secured to an output shaft 70 and a gear 72 meshing with the pinion 68 and secured to a shaft 74 the final drive 24 includes a pinion 76 secured to a shaft 74 and a gear 78 meshing with the pinion 78 and secured to the ring gear of differential 26 a torque split clutch 80 alternately opens and closes a drive connection between output sprocket 46 and carrier 64 when the assembly 10 is operating in a power split mode i e when both the fixed ratio chain drive 16 transmits power to 20 carrier 64 and the variable ratio belt drive 18 transmits power to sun gear 60 a reverse brake 82 is engaged to produce reverse drive by holding carrier 64 fixed against rotation in reverse drive ring gear 62 and output shaft 70 are underdriven in a reverse direction compared to the speed and direction of sun gear 60 which is continually driveably connected to output pulley 54 when the assembly 10 is operating in cvt mode i e when torque split clutch 80 is open thereby disconnecting chain drive 16 from the planetary gearset 20 clutch 84 is engaged thereby producing a direct drive connecting between output pulley 54 through clutch 84 and output shaft 70 to the transfer gearset 22 in one example the chain drive 16 has a 0 5 1 drive ratio the variable drive 18 drive ratio range is 2 3 0 43 1 the transfer gearset 22 has a 2 1 drive ratio the final drive 24 has a 3 5 1 drive ratio and beta i e the ratio of the ring gear pitch diameter to the sun gear pitch diameter is 2 0 reverse drive is produced with.