Lakeside Hammers will have Piotr Swiderski available for competitive action for the first time this season.
The 27-year-old Pole will ride at a challenge match at Swindon on Thursday before appearing in Friday's Elite League visit of Belle Vue.
Swiderski had looked unlikely to ride this weekend after stalling on signing paperwork saying he is happy with the new silencers.
Hammers captain Lee Richardson is also available despite a fall last week.
The 30-year-old fell in the 10th heat of Friday's win over Wolverhampton, but despite lengthy medical attention he will race against the Aces.
Swiderski's return means Jonas Davidsson will no longer be needed as cover.
Co-promoter Jon Cook told the club website: "I am extremely grateful to Jonas for not only his brief appearance last week but also his continued offer to fill in for us whenever he is needed on an emergency basis."