The best replacement for stock exhaust is aftermarket.

The best alternatives to stock exhaust are rated as following:
★★★★★  aftermarket
★★★★  spt
★★★★  headers
★★  aftermarket exhaust

Your alternative for stock exhaust is not listed? Suggest!
Speaking about stock exhaust, one probably shouldn't forget about headers.

Other search terms related to stock exhaust and their ratings are:
★★★★★ headers
★★★★ test pipe
★★★★ turbo
★★ test pipes
★★ downpipe
★ hfc
★ art pipes
★ mjs headers
You have in mind a companion for stock exhaust and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of stock exhaust in all years. Click on graph for more.
stock exhaust
aftermarket
spt