Slip-On Exhaust Tip for Harley Davidson Street Bob (2018-2024) Stainless with dB Killer

High-Flow Slip-On Exhaust Tip for 2018-2024 Harley Davidson Street Bob (FXBB / FXBBS)

What it Does: The Shorty GP Slip-On Exhaust Tip replaces the heavy, muffled factory silencer on the 2018-2024 Street Bob to streamline exhaust gas evacuation, shed unsprung mass, and restore an aggressive exhaust tone.

The Stock Harley Davidson Street Bob Acoustic and Thermal Bottleneck

Factory exhaust assemblies on the Softail FXBB and FXBBS platforms are heavily choked by restrictive multi-chamber internal baffles engineered strictly for excessive sound dampening. This restrictive labyrinth increases thermal retention at the exhaust ports, impedes scavenging velocity from the Milwaukee-Eight powerplant, and saddles the chassis with cumbersome, oversized mufflers that mute the engine's mechanical signature.

The Engineering Solution

Engineered from polished stainless steel, this 10.5-inch Shorty GP slip-on muffler eliminates excessive backpressure by providing an unimpeded pathway for spent exhaust pulses. Built specifically to clamp over factory 1.72" to 1.75" OD header pipes, this lightweight 2-lb unit features a removable internal catalyst dB killer that keeps acoustics around 95 dB while preserving low-end torque dynamics. The compact form factor optimizes heat dissipation, drops critical weight off the right-side swingarm axis, and requires no cutting or permanent modification to the factory header structure.

Technical Specifications

Compatibility

• 2018-2020 Harley Davidson Street Bob 107 (FXBB)
• 2021-2024 Harley Davidson Street Bob 114 (FXBBS)
• Designed strictly for OEM 1.72" to 1.75" OD headpipes

Frequently Asked Questions

Does this fit the FXBB / FXBBS Street Bob?

Yes, this is a direct fit for the 2018-2024 Harley Davidson Street Bob equipped with the Milwaukee-Eight 107 ci and 114 ci engines utilizing factory headers.

Is an ECU recalibration or tune required after installation?

ECU tuning is suggested to maximize volumetric efficiency gains and fuel mapping, but it is not strictly required for standard slip-on operation.

The Harley Davidson Muscle Standard

Uncompromising V-twin torque demands free-breathing exhaust architecture that amplifies power delivery and sound without structural compromises on the open road.