S2000 Upgrades Rigid Collars | Suspension Upgrades for Automotive Applications. Take a look at the Rigid Collars we sell from top brands including Blox Racing, Manzo and Megan Racing. We sell Rigid Collars for vehicles including Honda. We offer Rigid Collars for applications including Honda S2000 and more. Select your vehicle from the search filter below to view Rigid Collars by vehicle make, model and year.