2.25 bottle
Love the sound of it,, does quiet it down some decibels and no loss of power !! Doing a 2.5 bottle an ultra quiet next

The Vibrant Performance Stainless Steel Resonator (1790) is a premium bottle-style resonator designed to reduce exhaust drone and refine overall tone without restricting flow. Constructed from T304 stainless steel, it offers excellent durability and corrosion resistance for both street and track applications.
This 12” long resonator features a 2.25” inlet/outlet and a 3.5” body diameter, optimized to maintain exhaust velocity while delivering a deeper, more refined sound. Its straight-through perforated core design allows for smooth flow, minimizing backpressure while effectively canceling harsh frequencies.
Specifications:
Inlet/Outlet ID: 2.25”
Body Diameter: 3.5”
Overall Length: 12.0”
Body Length: 10.0”
Material: T304 Stainless Steel
Design: Straight-through perforated core
Finish: Polished
Features:
Reduces rasp, drone, and harsh exhaust tones
Straight-through design ensures unrestricted performance
Crafted from durable, corrosion-resistant T304 stainless steel
Polished finish for a clean, professional appearance
Ideal for custom exhaust systems or sound tuning on high-performance vehicles