Circuit Sports S13 SR20DET Hotpipe with Welded HKS Flange. This pipe is an aluminum hot pipe with a HKS Flange attached to it for those who plan to install a HKS Blow Off Valve on the hot side of the engine bay. The use of aluminum pipping offers increased durability, consistent higher boost pressure, improved response and an attractive appearance. The flange fits HKS SSQV blow off valves perfectly. Kit comes with the hotpipe and flange only. A perfect upgrade for those who plan to run a aftermarket blow off valve.
Vehicle Applications| Year | Make | Model | Trim | App Notes |
| 1989 - 1998 | Nissan | 180SX | (S13) L4 2.0L SR20DET | None |
| 1989 - 1993 | Nissan | Silvia | (S13) L4 2.0L SR20DET | None |
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