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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
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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 Metal Catalyzer replaces the factory primary catalyzer and the front pipe with secondary catalyzer on the facelift GR Yaris. HKS swap the stock 600 cell ceramic cores for low-density 150 cell metal catalysts in both positions, and open the pipe up from 70mm to 75mm, cutting exhaust back pressure while keeping emissions purification in place.
On the HKS test car the catalyzer alone added 5.4 kW and 4.8 Nm over stock. Paired with the HKS Super Turbo Muffler (31029-AT017) the gain was 10.8 kW and 14.9 Nm.
Features
- 150 cell metal primary and secondary catalyzers in place of the stock 600 and 300 cell ceramic units
- Primary catalyzer uses a compact cell structure and tuned precious metal ratio, balancing purification against back pressure
- Main pipe enlarged from 70mm to 75mm
- SUS304 stainless steel, buff polished, all joints TIG welded
- Accepts the genuine primary catalyzer heat shield
- Dedicated mounting brackets for both manual and automatic cars included
- Exhaust volume unchanged with the stock muffler, with a slightly higher tone
Fitment
- Toyota GR Yaris GXPA16 facelift (Gen 2), 04/2024 onwards
- Engine: G16E-GTS 1.6L turbo
- Manual and automatic transmission
- Pre-facelift GR Yaris (2020 to 2024) uses a different part, HKS 33005-AT011
Notes
- Not compatible with the Japanese-market RC grade fitted with standard 17 inch tyres.
- Minimum ground clearance at the front frame member is 120mm.
- Power figures are HKS in-house dyno results. Results vary by vehicle, tune and measuring equipment.
- HKS emissions certification applies to the Japanese market. Check your state regulations before road use in Australia.
Specifications
- Part Number
- 33005-AT012
- Brand
- HKS
- Includes
- Primary catalyzer, front pipe with secondary catalyzer, MT and AT brackets
- Catalyst
- Metal substrate, 150 cells (primary and secondary)
- Stock Catalyst
- Ceramic, 600 cells (primary), 300 cells (secondary)
- Main Pipe Diameter
- 74.7mm (stock 70mm)
- Material
- SUS304 stainless steel
- Finish
- Buff polished, TIG welded
- Weight
- 9.2 kg (stock 7.4 kg)
- Minimum Ground Clearance
- 120mm (front frame member)
- Near-Field Exhaust Noise
- 81 dB with stock muffler, 93 dB with HKS Super Turbo Muffler
- Power Gain
- +5.4 kW, +4.8 Nm (catalyzer only, HKS in-house)
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.