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.

$389.99 shipped for EVO:
http://www.prostreetonline.com/pso/p...sku=3306-SM002

Other applications:
http://www.prostreetonline.com/pso/p...KS%20Downpipes