Cherry Bomb Glasspack Muffler 87521CB — 8in compact, 12in overall, 2.25in inlet/outlet, deep mellow tone

The Cherry Bomb 87521CB Glasspack Muffler is a compact, straight-through performance silencer delivering the brand’s signature deep, mellow exhaust note while reducing backpressure for improved engine responsiveness.

Introduced as the original high-performance glasspack in 1968, this Cherry Bomb unit blends a simple, proven internal design with a universal fit that works with many header and exhaust systems. Its straight-through construction encourages efficient gas flow and a distinctive low-frequency tone that enthusiasts recognize, while the compact 8-inch body and 12-inch overall length make it easy to fit into tighter installations.

What sound and driving character should I expect from this muffler?

Expect a deep, rounded exhaust tone that is noticeable but not overly harsh. The glasspack’s straight-through core gives a throaty mid-to-low frequency growl under acceleration and a tempered idle note, striking a balance between performance sound and daily drivability.

• Deep, mellow tone favored by classic and performance car owners
• Clear sound on throttle with reduced rasp compared to straight pipes
• Audible at idle without being intrusive for street driving

How does this muffler affect power and engine performance?

The straight-through design minimizes restriction, which helps lower backpressure and can improve scavenging in many engines. While gains depend on vehicle, headers, and tuning, the reduced flow resistance supports horsepower and throttle response for performance-oriented setups.

• Straight-through flow reduces backpressure for better exhaust evacuation
• Compact dimensions simplify installation on header-equipped vehicles
• Works well as part of a tuned exhaust system for responsiveness gains

Will this muffler fit my vehicle and how is it mounted?

The Cherry Bomb 87521CB features universal inlet and outlet diameters designed to work with common header and pipe sizes. Its compact 8-inch body and 12-inch overall length make it suitable for many classic cars, hot rods, and custom exhaust layouts where space is limited.

• Inlet: 2.25 inch — compatible with many header outlets
• Outlet: 2.25 inch — matches standard mid-pipes and tailpipes
• Body diameter: 3.5 inch with an 8 inch body and 12 inch overall length for tight fits

What are the construction details and durability expectations?

Built following the original glasspack concept, this model uses a straight-through perforated core wrapped in sound-absorbing material inside a durable shell. It’s intended for street and show use where classic Cherry Bomb sound and a lightweight package are priorities.

• Classic glasspack internal packing for characteristic tonal quality
• Robust outer shell suited to standard road use and installation
• Simple design makes it easy to service or replace when needed

Who is this for? Enthusiasts restoring muscle cars, hot rodders, and performance-minded drivers who want the original Cherry Bomb voice in a compact package will appreciate the 87521CB. It’s especially useful for builds requiring a short muffler with 2.25-inch connections—offering the classic deep, mellow tone with a straightforward, easy-to-fit layout. If you need a louder straight-through sound or custom tuning, consider pairing this muffler with compatible headers and a full exhaust system to optimize flow and tone.