Sub-Assembly, Muf, 131rr
Harley-Davidson
#64901447
£4435.48£3991.93
Member£3770.16-15%
Exhausts
3,252 products
Full systems, slip-on mufflers, headpipes, end caps, heat shields, and exhaust gaskets from Vance & Hines, Feuling, and Cobra. Covers Milwaukee-Eight Touring and Softail through to Sportster XL. Slip-ons are the easiest swap; a full system needs a dyno tune to get the most out of it. Check baffle options on any muffler before you buy.
Bike BuilderBuild your bike →
Your Selection:
Search within results
Brand
Quick filters
Price range
Or enter a custom range
–
Showing 1–48 of 3,252 EXHAUST
Exhaust
Exhaust Misc Exhaust Headpipe Extensions Exhaust Flange Sets Exhaust Studs Exhaust Insulating Wraps Exhaust Dragpipe Extensions Exhaust End Caps Exhaust Systems 2 In 1 Exhaust Mount Parts Exhaust Power Cones Exhaust Systems 2 In 2 Exhaust Heat Shields Exhaust Tools Exhaust Repl Parts Exhaust Spigots Exhaust Gaskets Exhaust Baffles Exhaust Slip-ons And Mufflers
Top Brands
Common questions
Do I need to retune after fitting a new Harley exhaust?
On a Milwaukee-Eight, yes. The bike leaves the factory running lean to meet emissions, and a freer-flowing exhaust makes that lean condition worse — more heat, and over time, real engine wear. Slip-ons plus an ECM tune is the standard, safe Stage 1 path. The full reasoning is in the Stage 1 guide.
Will aftermarket Harley exhausts stay UK MOT-legal?
Yes, if you choose road-designed parts. Reputable slip-ons — Vance & Hines Eliminator, S&S Mk45, the Screamin’ Eagle Street Performance line — are sold E-marked or with road-legal baffles for exactly this reason. Open drag pipes are a different decision entirely and will draw attention at roadside checks.
Slip-on mufflers or a full system for a first Harley exhaust upgrade?
For most UK daily riders, slip-ons plus a tune. They replace the rear muffler only, keep the catalytic converter on most modern bikes, and give you most of the audible character with a small mid-range bump for a fraction of the cost of a full 2-into-1 system.