H&R Racing HRCH11 1/24 Hardbody Bare Chassis Slot Car Voltage Regulators while the 100C version provides

while the 100C version provides up to a 200C burst rate for stronger acceleration and increased current output

and battery compartment

and 8IGHT-E 4WD platforms

8 x 16 x 5mm Ball Bearing (4 pcs)

H&R Racing HRCH11 1/24 Hardbody Bare Chassis Slot Car Voltage Regulators while the 100C version providesH&R Racing Adjustable 1 24 RTR Chassis Silicon tires 1 24 scale slot car Wheelbase adjustable from 3 5 8" to 4 7 8" (92mm to 123mm) Includes 18,000 RPM small can Hawk motor, 27x18mm rear Silicone Rubber Rear Tires with 6 Spoke Silver Wheels on setscrew aluminum hubs and rubber tire 6 spoke silver Wheel fronts, Oilite bushings, body mounting kit Comes with inline motor mount & 48 pitch Cox axle gearing.