Wilwood 120-14697-BK Wilwood Caliper-Dynapro Single 5.98in Mount-Black 1.58in Piston 1.1in DiscWilwood 120 14697 BK Wilwood Caliper Dynapro Single 5. 98in Mount Black 1. 58in Piston 1. 1in Disc Dynapro four piston dust seal radial mount calipers (DPR DS) are an example of Wilwoods continuing upgrade and improvement processes. Combine pure race technology with a new generation of Wilwood performance enhancements. The Dynapro DS combines the versatility of radial mounting with a sleek profile, superior strength, and extreme durability in adverse