The HKS Silent Hi-Power is a 75mm SUS304 stainless steel cat-back exhaust for the Mitsubishi Lancer Evo IV (CN9A), Evo V, and Evo VI (CP9A) with the 4G63T engine; the TYPE-S internal silent chamber cancels sound waves to deliver a street-legal 93 dB tone with a single 120mm SUS304 tip.
| Type | Cat-back exhaust system (Silent Hi-Power) |
| Material | SUS304 stainless steel |
| Pipe Diameter | 75mm |
| Tips | Single 120mm — SUS304 stainless steel |
| Sound Level | 93 dB (close, HKS); 91 dB stock |
| Road Clearance | 110mm (center pipe, stock suspension) |
| Part Number | 31019-AM006 |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
