Product images and videos are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Exhaust› Exhaust Pipes, Systems and Components
AMS
Alpha Performance Infinit
SKU: A00I ALP.28.05.0001-1
Advanced — 4+ hours
Overview
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Vehicle Symptoms
- Sluggish acceleration and turbo lag
- Restricted exhaust sound at high RPM
- Check engine light with catalyst efficiency code
- Reduced peak horsepower and torque
- Excessive backpressure causing heat soak
Diagnostic Codes
- P0420 – Cat Sys Efficiency Below Threshold (B1)
- P0430 – Cat Sys Efficiency Below Threshold (B2)
Relevant Conversations
- VR30 Q50 downpipes vs stock dyno
- Q60 Red Sport 400 downpipe install time
- P0420 after downpipe install fix
- AMS race downpipes Q50 review
- VR30 downpipe check engine light tune
- Q50 3.0t lower downpipes gains
- VR30 downpipes without tune?
- Infiniti Q60 downpipe symptoms before install
- AMS downpipes vs Fast Intentions VR30
- VR30 downpipe exhaust leak symptoms
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
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Available on iOS & Android
Specifications
| Brand | AMS |
| Part Number | A00I ALP.28.05.0001-1 |
Videos
Installing AMS lower DOWNPIPES ON MY Infiniti Q50 3.0t Silver sport| Performance Mod✅
Q50 AMS Downpipes!!!
Installing AMS Downpipes On My INFINITI Q50
INSTALLING AMS ALPHA CATLESS LOWER DOWNPIPES TO MY Q60 REDSPORT! (paired with ark exhaust)
Infiniti Q50S AMS Down Pipes
Q50 Redsport Ark Exhaust + AMS Full Downpipes
Ams downpipes full 3” exhaust with 5” tips on a 2018 q60 twin turbo v6
RA500 Q60 AMS Downpipe Install (PLUS TUNING, BURNOUTS, AND MORE!!)
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Returns & Fitment
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.
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