Held on the Walliston Primary School oval, the car and bike show will offer a range of free children’s activities including a bouncy castle, plus a sausage sizzle and more.
The event is sponsored by Auto One Kalamunda, Perth Harley Davidson, 2 Tone Motor Trimming and Australian Classic Limousines, along with a number of other sponsors.
Organiser Brad Pettitt said the entry for spectators is free.
He also said it would offer a fun family day out for all.
Horsepower in the Hills is planned from 9am to 2pm at Walliston Primary School.