Intake & Exhaust

The increase in airflow provided by the filter results in up to 3hp gain on factory displacement M8 engines, up to 5hp gain for 124" big bore M8 engines Fits oval Screaming Eagle® Ventilator® air cleaners and M8 special models equipped with oval air cleaners Performance...

The best performing exhaust system there is for M8 Harleys! Fits: 2018-2022 Harley Softail M8 Models 100% Made in USA TIG Welded Perforated Stainless Muffler Note: If this product shows in-stock, that means we have it on the shelf, ready to GO! PRICING INCLUDES...

Fits: Twin Cam Dyna Models 100% Made in USA TIG Welded Perforated Stainless Muffler Note: If this product shows in-stock, that means we have it on the shelf, ready to GO! PRICING INCLUDES $85 handling & freight charge from HPI, does NOT include shipping cost...

Vents breathers to atmosphere instead of recirculating oil mist back through the intake Converts the Assault Charge Air Cleaner from internal to external breathing Made in the U.S.A.

The best performing exhaust system there is for M8 Harleys! Fits: 2017-2023 Harley Touring models 100% Made in USA TIG Welded Perforated Stainless Muffler Note: If this product shows in-stock, that means we have it on the shelf, ready to GO! PRICING INCLUDES $85...

Each hidden breather is o-ringed at the heads and exits at the mouth of the injector/carb to provide efficient engine breathing, eliminating the need for any external hoses or hardware Standard red filters are pre-oiled, washable and feature four-layers of surgical grade cotton for...

2-into-1 equal-length headers Stepped 1-3/4" to 1-7/8" Utilizes an advanced inner collector for maximum performance Stainless steel construction with hand TIG welding Made in the U.S.A. Fits '91-'17 models with mid controls and '07-'17 models with forward controls

The Method is a forged billet aluminum air cleaner that features a sculpted CNC machined design and a clear polycarbonate top that provides a window into the inside of your engine's intake system Hard coated polycarbonate window  Patent-Pending hidden breather system  High performance black...

• Top engine builders demand quality fasteners! Secure your engine with complete confidence.• Feuling® engine fastener kits for Twin Cam® engines• Quality 12-point heat treated 8740 chrome moly steel bolts with black oxide finish• Feature precision rolled threads for optimum engagement, to prevent galling and promote...

DOMINATOR 2:2 3-STEPPED HEADER, 4.5" MUFFLERS W/ EDGE TIPS, BLACKHEADERS - Fits 17-24 M8 Baggers ·         16 gauge 1-3/4- 1-7/8- 2 inch 3 step primaries ·         Spherical port caps to insure sealing ·         18mm and 12mm 02 bungs ·         Interconnect for increased torque ·        ...

2x2 design allows fitment of stock heat shields Cross over allows rider to run dual exhaust on both sides 1-3/4" headpipes Utilizes an advanced inner collector for maximum performance 18 mm and 12 mm O2 ports Made to fit with stock slip on mufflers...

Hand TIG-welded stainless steel construction 1-3/4" headpipes step up to 1-7/8" into the collector to increase flow and improve performance 4" diameter straight can 11" muffler body includes matching aluminum end cap Removable spiral-core louvered baffle features an aggressive sound 18 mm and 12...

Meticulously hand built, our Assault Exhausts are TIG welded, then mandrel bent, making each one an excellent piece of craftsmanship. Our Flagship exhaust system, with its deep exhaust note and unique styling is the perfect starting place for those looking to improve the looks...

Meticulously hand built, our Assault Exhausts are TIG welded, then mandrel bent, making each one an excellent piece of craftsmanship. Our Flagship exhaust system, with its deep exhaust note and unique styling is the perfect starting place for those looking to improve the looks...

A compact exhaust with big power and attitude, the Trask Performance Big Sexy is the perfect package for any rider who is looking for impressive gains and styling. With its sawed-off, aggressive looks, this exhaust’s attitude is both big and sexy! Creates broad torque...

Khrome Werks 2-1 Exhaust with the Eclipse finish, which is a true black chrome appearance. Fits: 2017-2023 Harley FLHT/ FLHR/ FLHX/ FLTRX/FLTRU/FLTRK models Designed to increase horsepower and torque while providing an aggressive, low-frequency sound level 1-3/4" to 1-7/8" to 2" high-low, 16 gauge,...

Hand TIG-welded stainless steel construction 1-3/4 headpipes step up to 1-7/8 into the collector to increase flow and improve performance 4" diameter straight can 11" muffler body includes matching aluminum end cap Removable spiral-core perforated baffle features an all-new aggressive sound Features 18mm and...

S&S Cycle has upped their intake game with a new M8 manifold and leveraged a 5-Axis CNC machining center for the ultimate in consistent shape and flow characteristics. Knowing polished porting has little impact on the intake side, they've machined a uniformly spaced and...

Made in the U.S.A.

Feature equal-length headers Stepped 1-3/4" to 1-7/8" headpipes with heatshields Utilizes an advanced inner collector for maximum performance Recommended for engines with up to 120 hp Made in the U.S.A.