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Universal fit
No vehicle selection needed.
This part may still fit. Check the details below or contact us before ordering. Ask about fitment
Fitment not confirmed
This part may still fit. Check the details below or contact us before ordering. Ask about fitment
Vehicle fitment
This part is listed to fit the following vehicles.
In Melbourne? Fit it in our workshop.
We fit parts in-house at the RevZone workshop. Book a time and bring your car in.
Description
The HKS Hi-Power Muffler is a full cat-back exhaust system (centre pipe and muffler) built on the Hi-Power concept of combining performance flow with a resonant, sporty sound. Constructed from SUS304 stainless steel with titanium-finished tips, it replaces the stock system while keeping close-range noise at or near stock levels on the Subaru WRX STI VA.
Features
- Material: SUS304 stainless steel body
- Tip style: Hi-Power titanium (HP Titan), 97mm diameter, left and right
- Centre pipe diameter: 74.7mm transitioning to dual 60.5mm
- Close noise level: approximately stock (HKS measured at 90 dB)
Fitment
- Subaru WRX STI, chassis VA (VAF), 2015 onwards
Notes
- Includes centre pipe and muffler assembly. Verify road clearance with lowered suspension before fitting.
- Bracket and stay designs may change without prior notice.
- JDM product: any HKS certification applies to the Japanese market. Check your state's regulations before road use in Australia.
Specifications
- Part Number
- 31006-BF001
- Brand
- HKS
- Material
- SUS304 stainless steel
- Tips
- dual titanium (HP Titan), 97mm each side
- Centre pipe diameter
- 74.7mm to 60.5mm x 2
- Noise level (close)
- approx. 90 dB (HKS)
Shipping
Orders are processed within 1-2 business days (Monday to Friday), and orders placed before 12pm AEST are usually dispatched the same day. Once dispatched, standard shipping takes 3-7 business days and express 1-3, with tracking emailed as your order leaves.
If part of your order is out of stock, we'll contact you with the option to split the shipment or hold it until everything is ready. Read the full shipping policy.
Returns
You have 14 days from delivery to request a return on unused parts in their original packaging. Refunds incur a 15% restocking fee (20% for special orders), or choose store credit and the full purchase value is applied to your account.
Parts that have been test fitted, installed, or used can't be returned, and special-order or overseas-ordered items are assessed case by case. Faulty or incorrectly supplied items are always covered at no cost to you. Read the full returns policy.