Harley-Davidson

These Angry 400 Series 4" slip-on mufflers deliver a deep, aggressive roar for Harley-Davidson Milwaukee-Eight touring models. A race-inspired stepped baffle core and modular design with swappable baffles and billet endcaps let riders customize sound and style without requiring an aftermarket tuner.

These Slip-Ons are built with stainless steel Angry Baffles , black or 3-step chrome billet endcaps, and are mounted using a sleek, weld-free system utilizing stock header pipe clamps. These Slip-Ons are compatible with several Harley Touring models, including Milwaukee 8 107, 114, 117, 121 CVO, 128 & 131,135+ engines

Set of 2 pcs,

Fitment : Forsch Mufflers M8 2017-2026 Touring 

Angry™ M8 Stepped Core Baffles (2"-2.5")

(specify Level II, III*, IV*, V* with order)       * Angry III & IV, V require an SE or Aftermarket Tuner for 107 motors, Angry 1 & 2 do not unless other modifications have been made to your motorcycle such as intake and CAT, M8 114's are fine up to Angry 3 as well with no other modifications to the bike. We recommend Angry III on Stock 114" and up, or Angry II for allot of mostly downtown city riding depending on the local by-laws.

2017+ Milwaukee Eight Touring  - Developed Specifically for the M8 our Stepped Baffles Enhance the M8 sound and aggression as much as possible without detriment to the engine. The BIG difference with our 2-step baffle? our 2" inlet is the nature next-step up from your stock 1.75" headers, then we step-up to 2.5". - Tis aids in keeping the speed of the exhaust gas higher then "falling" into a 2.5" full length baffles. We also achieve a unique sound in the market due to the unique exhaust flow-path when combined with our tuned end caps. 

Disclaimer:  A stock engine tuner is sufficient for normal everyday street use, if the only engine/intake/fuel system modification you have done is your Forsch Mufflers! However an Engine Tuner is recommended (along with high flow intake) to fully appreciate these pipes, and if any other modifications have been made. Please note as with a stock / modified engine/exhaust,  Damage wear & tear may occur faster than normal by practicing aggressive riding such as applying instant full throttle at low RPM's! - read the HD manual - they don't like it when riders crank the throttle in a higher gear at low RPM vs gearing down and increasing, increasing RPM and reducing engine loads - if you pound it it all the time it will break, if you find you are always on the throttle - it could be time for Cams, Compression Increase, Bore kit etc.  

Call or message us for more information specific to your requirements!

These Angry 420 Slash touring slip-on mufflers are built for Harley-Davidson Milwaukee-Eight touring models from 2017–2026, offering adaptable exhaust sound and strong low-end performance. Rigid 16-gauge 4-inch bodies, race-inspired CNC-machined 4.2-inch billet end caps, and a stepped baffle core create a deep, aggressive roar with smooth torque delivery. A modular design with swappable baffles and end caps lets riders fine-tune rumble and volume to match their riding style. 

These Slip-Ons are compatible with all M8 Harley Touring models 2017 and up, including Milwaukee 8 107, 114, 117, 121 CVO, 128 & 131,135+ engines

Forsch Performance Angry Slip-On Muffler set for Harley-Davidson Touring models. Featuring large 4-inch 16 Gage mufflers finished with race-inspired CNC machined billet end caps, the 400 Series Mk1 is tuned to give your bagger or trike  deep and aggressive roar. Allow 2-3 days build time for in stock items. 

• Modular design for swappable baffles and endcaps
• Angry baffle & endcap options)
• Military-Spec Hard Black Anodized or Nickel-Chrome Endcaps
• Sleek Weld-Free mounting system
• Utilize stock header pipe clamps (size: 1.75" & RH)
• Harley Touring 88ci to 110ci +  Trike 2010 - 2026 (Twin Cam and M8 trike)

Forsch Performance Slip-On Mufflers for Harley-Davidson Touring models. Featuring large 4-inch tuning chambers finished with race-inspired CNC machined 4.5" extreme billet slash cut end caps, with a 60 degree angle to match the angle of your bags beautifully! The Forsch M8 Mufflers are tuned to give your (2017-2026) bagger a deep and aggressive roar. Our 4.5" Slash end caps maximize the exhaust scavenging area resulting in a unique sound curve and a slight overall sound increase, compared to our standard 4.0" end caps.  All Forsch pipes are internally coated with a heat and corrosion-resistant ceramic coating to protect the exterior chrome (or other exterior finish)

• Modular design for swappable baffles and endcaps
• Standard Black, or Chrome Billet End caps (choose one)
• Sleek Weld-Free mounting system 
• Utilize stock header pipe clamps (size: 1.75" LH, 2.5" RH)
• Harley Touring 107ci to 135ci

*To reach our "standard sound level" with 4.5" slashcut end caps, Angry™ baffles can be added to achieve a similar noise level. Note: This will not provide an exact sound match.

Allow typically 2-3 weeks for manufacturing time, or call for availability

These high-performance slip-on mufflers are designed for 2018–2026 Harley-Davidson Softail models with dual exhaust, delivering a deep, aggressive sound and improved flow. Interchangeable Angry baffle tubes and billet aluminum endcaps let you fine-tune the exhaust note and style over time, with your choice of black ceramic or chrome finishes.

2018-2026 Softail Mufflers  (Dual muffler setup)(Fat Boy, Breakout, Slim, Lowrider (to 24') , Softail Standard, Street Bob and Heritage up to 2024 (dual mufflers)

Forsch Performance Slip-On Mufflers for Harley-Davidson Touring models. Featuring large 4-inch x 16 gage steel tuning chambers finished with race-inspired CNC machined 4.20" billet race cut end caps, The Forsch M8 Angry series of Mufflers are designed and built to give your (2017-2025) bike a deep and aggressive roar. Our 420 end caps maximize the exhaust scavenging area resulting in a unique sound curve, different to our standard 4.0" end caps.  All Forsch pipes are internally coated with a heat and corrosion resistant ceramic coating to protect the exterior chrome or black finishes. coated to Harley-Davidson OEM factory specifications for ultimate durability 

• Modular design for swappable baffles and endcaps
• 420 Angry Endcaps featuring 10x tuning ports, unique within the Forsch Performance collection of mufflers
• Standard Black, or Chrome End caps 
• Sleek Weld-Free mounting system 
• Utilize stock header pipe clamps (size: 1.75" LH, 2.5" RH)
• Harley Touring 107ci to 131ci 
• OEM HD plating and coatings

*Angry™ II baffles are recommended for stock (and modified) motorcycles in most common riding conditions, while allowing your factory HD engine ECU to maintain the proper air fuel ratios. So long as Forsch Angry 2 mufflers are your only alteration on your motorcycle, no aftermarket tuner is required, however we do recommend SE or other aftermarket tuner to further enhance the performance and sound of your ride. 

Allow 1-3 weeks for manufacturing time, or call for availability

These Angry 420 Slash touring slip-on mufflers deliver a deep, aggressive roar and customizable sound for Harley-Davidson Twin Cam touring and trike models from 1998–2016. Large 4-inch bodies with dual stepped baffle cores, CNC machined billet end caps, and a modular design let you swap baffles and end caps to fine-tune both tone and style while using a clean, weld-free installation on stock header pipe clamps.

Fitment:  1998-2016 Twin Cam touring models and M8 Trike /  Road Glide 3

Fits all 4.0" Forsch pipes, These CNC Machined Billet Aluminum 6061 T6 Endcaps enhance the look of your ride with a sleek bolt-free endcap mounting system, FORSCH PERFORMANCE laser engraved logo.

Includes Hardware Kit (10 pcs 1/4-20 x 1-1/2" 316 SS Socket Head Cap Screws)

Oversized just right @ 4.2" these fit all 4.0" Forsch pipes, CNC Machined Billet Aluminum 6061 T6 Endcaps enhance the look of your ride with a sleek hidden  bolt endcap mounting system (common with all Forsch 4" mounting) "FORSCH PERFORMANCE" laser engraved logo, and 4 tuner ports for the enthusiast looking for a unique sound with excellent deep thundering base 

Includes 2 endcaps &  Hardware Kit (6 pcs 1/4-20 x 1-1/2" 316 SS Socket Head Cap Screws, washers & loctite) allow 3-4 days extra for Skulls Laser Engraving (made to order)

Set of 2 pcs,

Fitment : Forsch Mufflers M8 2018-2024 Select Softail Models

(specify Level I, II, III*, IV*, V* with order)       * Angry III & IV, V require an SE or Aftermarket Tuner Angry 1 & 2 do not unless other modifications have been made to your motorcycle such as intake and CAT, M8 114's are fine up to Angry 3 as well with no other modifications to the bike

2018+ Milwaukee Eight Softail  - Developed Specifically for the M8 our Baffles Enhance the M8 sound and aggression as much as possible without detriment to engine.

Disclaimer:  A stock engine tuner is sufficient for normal everyday street use, if the only engine/intake/fuel system modification you have done is your Forsch Mufflers! However an Engine Tuner is recommended on anything more than our Angry 1 baffles (along with high flow intake) to fully appreciate these pipes, and if any other modifications have been made. Please note as with a stock / modified engine/exhaust,  Damage wear & tear may occur faster than normal by practicing aggressive riding such as applying instant full throttle at low RPM's! - read the HD manual - they don't like it when riders crank the throttle in a higher gear at low RPM vs gearing down and increasing, increasing RPM and reducing engine loads - if you pound it it all the time it will break, if you find you are always on the throttle - it could be time for Cams, Compression Increase, Bore kit etc.  

Fits all 4.0" Forsch pipes - Flush / clean mounting - no outside bolts

Includes Hardware Kit