Big Sexy 2:1 Exhaust / M8 FXLRST | FLHC | FLSB

The Trask Big Sexy 2:1 for '18-'23 FXLRST, FLHC and FLSB models is the Softail specific version of the system, recommended for 117" and 140+ horsepower engines.

This is the Big Sexy cut for the Low Rider ST, Heritage Classic and Sport Glide rather than for a full dress bagger, and the routing is specific to those chassis. Trask's power recommendation is the same across the line and worth repeating: the header is sized for 117" M8 builds and engines making 140 horsepower or more. On a stock motor it is more pipe than the engine can fill.

How the Big Sexy System Is Built

A three step header design feeds a high flow merge muffler, keeping exhaust velocity climbing through each transition. Double slip joints handle heat expansion while holding exhaust seal quality through repeated heat cycles. Construction is high quality mandrel bent stainless steel, so inside diameter stays consistent through every bend. Custom Assault-style heat shields give the system its look. Made in the USA.

Big Sexy Softail Specifications

• Fits '18-'23 FXLRST, FLHC and FLSB
• Recommended for 117" M8 engines and other engines making 140+ horsepower
• Three step header design with high flow merge muffler
• Double slip joints for heat expansion and exhaust seal quality
• Mandrel bent stainless steel construction
• Custom Assault-style heat shields
• Finishes: stainless steel or black
• Made in the USA

Before You Order

⚠️ VERIFY your engine output and exact model before ordering, since this system is specific to FXLRST, FLHC and FLSB. Also VERIFY street legality and emissions compliance for your state and model year: most aftermarket performance exhaust systems are intended for closed course competition use and are not certified for street use in all jurisdictions. Plan on retuning after installation.