{"product_id":"m4-black-gp-slip-on-exhaust-muffler","title":"M4 Black GP Slip-On Exhaust Muffler","description":"The M4 Black GP Slip-On Exhaust Muffler is a performance-focused replacement for the restrictive factory exhaust on 2006-2020 Yamaha YZF-R6 motorcycles. By replacing the stock muffler, this unit improves exhaust scavenging to provide a more aggressive sound and a slight increase in engine power. It features a distinct GP-style aesthetic, with a design that mounts lower and further forward on the bike than the original component.\n\nThe system includes the black GP cone, a barrel clamp, and an M8 flange nut for installation. While this slip-on provides a modest power improvement, the manufacturer recommends a full system upgrade for users seeking more significant horsepower gains. For riders concerned about noise levels, optional Stage 1 (Q1) and Stage 2 (Q3) quiet inserts are available for separate purchase to help manage sound output. This product does not meet emission requirements for street or highway use.","brand":"Project M4","offers":[{"title":"Default Title","offer_id":52663368679736,"sku":"YA6622","price":271.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687530104.jpg?v=1784326317","url":"https:\/\/store.motormia.co\/products\/m4-black-gp-slip-on-exhaust-muffler","provider":"MOTORMIA","version":"1.0","type":"link"}