GReddy Supreme SP Cat Back Exhaust Honda Civic Type R 2017-2021 | 10158214 Legacy_2015-2019 Eagle's EJ257 STI rods include

Eagle's EJ257 STI rods include ARP 3/8in 2000 rod bolts for extensive ability to handle power and boost

The head of the stud uses a 4mm Allen to thread the studs into the block

but airflow management determines real-world performance:

Does NOT include center trunk garnish (sold separately)

GReddy Supreme SP Cat Back Exhaust Honda Civic Type R 2017-2021 | 10158214 Legacy_2015-2019 Eagle's EJ257 STI rods includeFitment: Honda Civic Type R 2017 2021 Upgrade the sound, style, and performance of your Honda Civic Type R with the Supreme SP Cat Back Exhaust from GReddy. Designed with a focus on real world drivability and dyno proven gains, this premium street performance exhaust delivers a refined tone, improved airflow, and a measurable power increase for the turbocharged K20C1 engine. Built from fully hand welded 304 stainless steel, this system features large