Exhaust› Exhaust Pipes, Systems and Components

IMR America

3.3TT Catless Primary Downpipes

$550.00

SKU: IMR-STINGER-G70-3.3L-2.5-CATLESS-PRIMARY-DOWNPIPES

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In Stock
Ships by Aug 31
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$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The IMR America Catless Primary Downpipes are designed to enhance power and allow turbos to breathe better on the 3.3TT Stinger or G70. These downpipes feature a bellowed mouth for proper turbo flow and an increased inner diameter from 2.00" to 2.50" for faster air flow. The result is faster spooling of OEM or aftermarket turbos.
Show original supplier description
The IMR America Catless Primary Downpipes are engineered to optimize performance for the 3.3TT Stinger and G70 models by improving turbocharger efficiency. Featuring a bellowed mouth, these downpipes facilitate smooth exhaust flow directly from the turbocharger. The inner diameter has been expanded from the stock 2.00" to a larger 2.50", allowing for quicker air passage through the engine and turbo turbines, leading to faster turbo spool. Constructed from 304L stainless steel with backpurged TIG welds, these downpipes also feature 304L stainless steel flanges designed for proper heat dissipation and protection. This construction ensures durability and resistance to the elements. For optimal performance and to prevent overboost, a tune is required when installing these catless downpipes. This product is intended for off-road use only. Mini O2 sensor cats are available separately to help eliminate P0420 codes without impeding exhaust flow.

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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Specifications

BrandIMR America
Part NumberIMR-STINGER-G70-3.3L-2.5-CATLESS-PRIMARY-DOWNPIPES
CategoryExhaust

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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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Shipping

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.

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