This system has a 120mm tip with 85mm piping.
This is the system with the 3 1/2 piping not the US one with 2 1/2 Inspired by & designed from the N-1 Endurance
Race series in Japan,
HKS has deverloped its Hiper Exhaust systems for both
turbocharged & normally-aspirated vehicle applications. Each Hiper system is constructed using an unchamber (SUS 304) stainless steel muffler assembly, high-quality computerized welds, & large diameter ceramic-coated steel piping. Unlike the straight-back design of the Drager systems, Hiper
mufflers & tips feature a unique offset flow & mounting design.
MSRP $599.00 
Many sites offer this for about 550. I saw a sale on the vendors section for 470 shipped so i'll say 440 obo i prefer it to be picked up but i may ship. I live in Los Angeles . This is brand new in box. it comes with gaskes and the jasma certificate. feel free to email me at
phathom58@hotmail.com if interested or you may call or text at 323 519 3693. thanks alot happy holidays