ISR Performance ST Series Polished Tip Exhaust - Scion FRS, Subaru BRZ, Toyota GT86, GR86

The ISR Performance ST Series Polished Tip Exhaust is a complete cat-back system for the Scion FR-S, Subaru BRZ, Toyota GT86, and Toyota GR86. Mandrel-bent stainless steel construction, dual mufflers, and 4-inch polished tips deliver a deeper exhaust tone across the entire power band on both naturally aspirated and forced induction builds.

What It Does

The factory exhaust on the FR-S, BRZ, GT86, and GR86 is tuned for refinement, which means quiet and restrictive. The ISR ST Series replaces the entire cat-back section with a freer-flowing 3-inch system that improves exhaust flow and unlocks a deeper, more aggressive note. The dual muffler design with 4-inch polished tips also gives the rear of the car a more aggressive visual presence.

Construction

• Mandrel-bent stainless steel piping
• Precision TIG welded throughout
• Brushed stainless finish mufflers
• Polished 4-inch tips
• 3-inch main pipe with dual muffler layout

Fitment

• Scion FR-S
• Subaru BRZ
• Toyota GT86
• Toyota GR86

What's in the Box

• 1x Mid section
• 2x Muffler sections with dual 4-inch polished tips
• 1x 2-bolt 3-inch exhaust gasket
• 1x 2-bolt 2.5-inch exhaust gasket
• 2x M8 bolts and nuts
• 4x M10 bolts and nuts
• 2x Springs
• 1x Donut gasket

Product Details

Brand: ISR Performance

Part Number: IS-ST-GT86-P

Type: Cat-back exhaust system

Material: Mandrel-bent stainless steel, TIG welded

Main Pipe: 3 inch

Muffler Configuration: Dual, brushed stainless

Tip Configuration: Dual 4-inch polished

Compatible Applications: NA and forced induction

Legality: Off-road and competition use only