It all depends on your budget really, but I'll do 2 typical set-ups.
CLUB RACE/RACE:
- Engine 1: RB S9 with matching pipe (about £200 ish)
- Engine 2: Sirio CL3B with matching pipe (about £180)
- Engine 3: Novarossi P5X with matching pipe (about £200-250)
- Steering Servo: ACE DS1015
- Throttle Servo: ACE DS1313
- Rx Pack: LRP 1500mAh/2300mAh LiPO with regulator
- Starter Box: SMD Evolution Box
- Starter Box Battery: 7Ah Motorbike 12V battery
- Starter Box Battery: 2x 4000mAh NiMH stick packs in series
- Starter Box Battery: 2x 7.4V LiPOs in series
- Glow Start
- Fuel Bottle
- Fuel: Byron 30%, O'Donnell 30%, UptiFuel 30%
BUDGET
- Engine 1: Picco P3 Basic with Pull start
- Engine 2: Go 3-port (the blue one)
- Engine 3: Something second hand
- Pipe: Hong Nor 086 or similar
- Steering Servo: Futaba 3305
- Throttle Servo: Futaba 3003
- Rx Pack: Orion 1600mAh NiMH
- Starter Box: the Fastrax twin motor one
- Starter Box Battery: 7Ah 12V
- Starter Box Battery: 2 stick packs
- Glow Start
- Fuel Bottle
- Fuel: as above (though probably 25% as it's cheaper and the engine lasts longer)
Or, of course, convert it to electric!