SPD Performance Muffler/Resonator Upgrade Kit (accessory, not a full cat-back)
Fits 2017-2020 Raptor
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Price tracked 12 times since Jul 26, 2026 across the stores we check daily: low $999, high $999, currently $999.
where to buy · 2 retailers tracked
This isn't a full cat-back - SPD doesn't sell a complete cat-back for the 2017-2020 Raptor. This is a muffler/resonator upgrade meant to pair with the factory system or an SPD downpipe.
why this one — SPD has no standalone cat-back for this Raptor generation, only muffler/resonator upgrade pieces - this is one of four such options they offer, so make sure it's actually what you're after before buying.
No manufacturer or independent dyno figure found for this specific product. Cat-backs on turbo trucks with a downpipe/tune doing the real work typically carry no standalone gain claim; sound/tone is the primary value prop.
Estimated from comparable claims: MBRP ~+5 whp; Gibson Performance Exhaust 10-15; Injen Technology up to 12
Questions about this category
No published gain figure for this part, and nothing here is a guarantee. Price is a list price and can lag the retailer; confirm at checkout. See how we check a price and our affiliate disclosure.