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Home » Subaru WRX/STI » Exhausts & Components » Downpipes   HKS Downpipe For maximum exhaust flow and increased turbo spool up, HKS offers Off-Road down pipes and front pipes for race use. Each 75mm mandrel down pipe and front pipe is a bolt on application that will mount to the stock turbo and to HKS turbo upgrade kits.     List Price: $195.00 Price: $175.00   « Previous | Next »