Exhaust› Catalytic Converters

STM Tuned

Evo X High Flow Cat w/ GESI Gen 1

$849.00

SKU: STM-EVOX-RP-GESI

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The STM Evo X High Flow Cat is a performance exhaust component featuring full stainless steel construction and a 300-cell GESi Gen 1 EPA-compliant catalytic converter. It bolts directly in place of the factory catalytic converter and includes O2 bungs for stock sensor and wideband compatibility.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandSTM Tuned
Part NumberSTM-EVOX-RP-GESI
CategoryExhaust

Buy with Confidence

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.

View Full Return Policy