--- title: "ninja 400 exhaust — Niche Verdict: Skip it (37/100) | Amazon United States - Flapen" canonical_url: "https://flapen.com/amazon/research/us/automotive/ninja-400-exhaust" last_updated: "2026-07-10T21:11:41.748Z" locale: en meta: description: "a small market ($9K/yr) — ninja 400 exhaust doesn't clear our bar today." "og:description": "a small market ($9K/yr) — ninja 400 exhaust doesn't clear our bar today." "og:title": "ninja 400 exhaust — Niche Verdict: Skip it (37/100) | Amazon United States - Flapen" --- Back to Flapen home # **ninja 400 exhaust** **Skip it****37/100 ** a small market ($9K/yr) — ninja 400 exhaust doesn't clear our bar today. **Market/yr** **$9K** **Growth (1y)** **+105.6%** **Products** **17** **Brands** **13** was 21 a year ago **Sellers** **17** **Price range** **$24.82–$117.35** **Returns** **7.6%** **Rating** **4.2★** **Skip it** Scored 37/100 across market size, growth, competition, quality gap, and returns. Market sizeGrowthCompetitionQuality gapReturns Market size **0** ×0.30 Growth **66** ×0.30 Competition **35** ×0.20 Quality gap **72** ×0.10 Returns **34** ×0.10 ## **Demand** Weekly Amazon search volume, last 104 weeks — +105.6% year over year. 856428Spike '25Black Friday '25Spike '26Jul '24Nov '24Mar '25Jul '25Nov '25Mar '26 ## **Seasonality** Monthly demand index across the year — 1.00 is average. JFMAMJJASOND Peak months: Apr, Jul, Aug, Sep · busiest ÷ quietest = 2.6× ## **Competition** - PACEWALKER22% - JFG RACING20% - Lesiyou16% - WATERWICH10% - Generic9% - YZCHAIN5% - Other (7 brands)18% The top 5 products take 67% of clicks — established leaders, but buyers still shop beyond them. 13 brands and 17 sellers compete here. **Brands** **13 **▼falling was 21 a year ago **Sellers** **17** **Top 5 brand share** **77%** #ProductBrandPriceRatingReviewsClick shareTrend 1 ![JFG RACING Motorcycle Slip On Exhaust with Muffler for Ninja 400 2016-2023](https://m.media-amazon.com/images/I/41HvKfNqZSL.jpg) [**JFG RACING Motorcycle Slip On Exhaust with Muffler for Ninja 400 2016-2023**](https://www.amazon.com/dp/B0BD8NDNFH) JFG RACING$51.444.0★5720%—flat 2 ![Lesiyou Motorcycle Muffler Mid Pipe Muffler Adapter Connect Pipe Compatible with Kawasaki Ninja 400 Z400 2018 2019 2020 2021 2022 2023 Ninja 500 2024](https://m.media-amazon.com/images/I/41+DlYLTy-L.jpg) [**Lesiyou Motorcycle Muffler Mid Pipe Muffler Adapter Connect Pipe Compatible with Kawasaki Ninja 400 Z400 2018 2019 2020 2021 2022 2023 Ninja 500 2024**](https://www.amazon.com/dp/B0DKXDSR81) Lesiyou$59.194.1★11116%▲rising 3 ![Exhaust Muffler Carbon Fiber 1.5-2Inlet with Removable DB Killer for Street/Sport Motorcycles and Scooters with 38-51mm Diameter Exhaust Pipes](https://m.media-amazon.com/images/I/41QrLf4tFxL.jpg) [**Exhaust Muffler Carbon Fiber 1.5-2Inlet with Removable DB Killer for Street/Sport Motorcycles and Scooters with 38-51mm Diameter Exhaust Pipes**](https://www.amazon.com/dp/B074CVHHGC) PACEWALKER$38.164.2★1,38416%▲rising 4 ![WATERWICH Motorcycle Muffler Compatible with Kawasaki Ninja 400 Z400 2018 2019 2020 2021 2022 2023](https://m.media-amazon.com/images/I/41wiUDxm3AL.jpg) [**WATERWICH Motorcycle Muffler Compatible with Kawasaki Ninja 400 Z400 2018 2019 2020 2021 2022 2023**](https://www.amazon.com/dp/B098DQ96YT) WATERWICH$58.664.2★11710%▼falling 5 ![Slip on Exhaust for Kawasaki Ninja 400 Z400 2018-2023 Motorcycle Muffler with Removable Baffle Stainless Steel/Aluminum Easy Installation (No Welding)](https://m.media-amazon.com/images/I/41zJvrVMQOL.jpg) [**Slip on Exhaust for Kawasaki Ninja 400 Z400 2018-2023 Motorcycle Muffler with Removable Baffle Stainless Steel/Aluminum Easy Installation (No Welding)**](https://www.amazon.com/dp/B0GBL67G5X) YZCHAIN$48.020.0★05%▲rising 6 ![autozen Exhaust Muffler Compatible with Kawasaki Ninja 400 Z400 2018 2019 2020 2021 2022 2023 30cm Matte Black with Adapter Connect Pipe Slip-On Motorcycle Exhaust](https://m.media-amazon.com/images/I/41u90D0JemL.jpg) [**autozen Exhaust Muffler Compatible with Kawasaki Ninja 400 Z400 2018 2019 2020 2021 2022 2023 30cm Matte Black with Adapter Connect Pipe Slip-On Motorcycle Exhaust**](https://www.amazon.com/dp/B0GXZPP11K) autozen$48.770.0★04%▲rising 7 ![PACEWALKER Motorcycle Slip On Muffler 1.5-2 Universal Motorcycle Exhaust with Removable DB Killer for Street/Sport Motorcycles and Scooters Dirt Bike ATV Street Bike 38-51mm Inlet(Titanium)](https://m.media-amazon.com/images/I/31fvrVJ9TpL.jpg) [**PACEWALKER Motorcycle Slip On Muffler 1.5-2 Universal Motorcycle Exhaust with Removable DB Killer for Street/Sport Motorcycles and Scooters Dirt Bike ATV Street Bike 38-51mm Inlet(Titanium)**](https://www.amazon.com/dp/B0F7GZRL1P) PACEWALKER$39.574.2★234%▲rising 8 ![unrulysoul 38mm-51mm Slip on Exhaust Tips 1.5-2 Motorcycle Muffler Tip Pipe with Dual Outlet for Kawasaki Ninja 400 Z650 ZX6R10R for Honda CBR 500 300R for Yamaha FZ1 250 300](https://m.media-amazon.com/images/I/311xCODjz+L.jpg) [**unrulysoul 38mm-51mm Slip on Exhaust Tips 1.5-2 Motorcycle Muffler Tip Pipe with Dual Outlet for Kawasaki Ninja 400 Z650 ZX6R10R for Honda CBR 500 300R for Yamaha FZ1 250 300**](https://www.amazon.com/dp/B0DNFHHVQM) unrulysoul$43.193.5★204%▼falling 9 ![Muffler Exhaust Mid Pipe For NINJA400 Z400 EX400](https://m.media-amazon.com/images/I/41wBuUFAmfL.jpg) [**Muffler Exhaust Mid Pipe For NINJA400 Z400 EX400**](https://www.amazon.com/dp/B0GJG6GWW2) Generic$96.510.0★03%▲rising 10 ![TBVECHI Motorcycle Carbon Fiber Exhaust Muffler Black Fits for Kawasaki Z900 GSXR750 CBR650](https://m.media-amazon.com/images/I/41xl6T1sBLL.jpg) [**TBVECHI Motorcycle Carbon Fiber Exhaust Muffler Black Fits for Kawasaki Z900 GSXR750 CBR650**](https://www.amazon.com/dp/B07MZ1YP9J) TBVECHI$59.304.2★833%▼falling 11 ![Motorcycle Exhaust Slip-on Motorcycle Muffler Carbon Fiber Slip on Exhaust Muffler Fit for Z900 GSXR750 CBR650 and more with Complete Accessories Black](https://m.media-amazon.com/images/I/51A5z9md21L.jpg) [**Motorcycle Exhaust Slip-on Motorcycle Muffler Carbon Fiber Slip on Exhaust Muffler Fit for Z900 GSXR750 CBR650 and more with Complete Accessories Black**](https://www.amazon.com/dp/B0D8SJBPJF) Generic$67.184.2★823%▼falling 12 ![Black Slip-On Exhaust Muffler compatible with GY6 Ninja400 Z400 R3 MT-03](https://m.media-amazon.com/images/I/31ig89XsrrL.jpg) [**Black Slip-On Exhaust Muffler compatible with GY6 Ninja400 Z400 R3 MT-03**](https://www.amazon.com/dp/B0H3G1RMX2) Generic$53.980.0★03%▲rising 13 ![Motorcycle Exhaust Muffler Black Used For Ninja 400 R3CB650R](https://m.media-amazon.com/images/I/31r6+tLv8jL.jpg) [**Motorcycle Exhaust Muffler Black Used For Ninja 400 R3CB650R**](https://www.amazon.com/dp/B0FVLRZ9B8) LILIUPEILONG$117.350.0★02%▲rising 14 ![PACEWALKER Motorcycle Slip On Muffler 1.5-2 Universal Motorcycle Exhaust with Removable DB Killer for Street/Sport Motorcycles and Scooters Dirt Bike ATV Street Bike 38-51mm Inlet(Grilled Blue)](https://m.media-amazon.com/images/I/41Pchouc1ZL.jpg) [**PACEWALKER Motorcycle Slip On Muffler 1.5-2 Universal Motorcycle Exhaust with Removable DB Killer for Street/Sport Motorcycles and Scooters Dirt Bike ATV Street Bike 38-51mm Inlet(Grilled Blue)**](https://www.amazon.com/dp/B0F8PWFKRV) PACEWALKER$45.144.4★332%—flat 15 ![Fits Kawasaki Motorcycle Muffler Stainless Steel Motorcycle Exhaust Hexagon Slip On Muffler Exhaust with Mid Pipe Fits Kawasaki Ninja 400 Z400 2018 2019 2020 2021 2022 2023 Ninja 500 2024](https://m.media-amazon.com/images/I/41+TBVHO9LL.jpg) [**Fits Kawasaki Motorcycle Muffler Stainless Steel Motorcycle Exhaust Hexagon Slip On Muffler Exhaust with Mid Pipe Fits Kawasaki Ninja 400 Z400 2018 2019 2020 2021 2022 2023 Ninja 500 2024**](https://www.amazon.com/dp/B0FCDZ6FWY) RQG$56.194.6★42%—flat **~~Showing 15 of 17 — show all ~~** ## **Product shelf** All 17 tracked products in this niche. Top sellersNewestTrending [![JFG RACING Motorcycle Slip On Exhaust with Muffler for Ninja 400 2016-2023](https://m.media-amazon.com/images/I/41HvKfNqZSL.jpg)**JFG RACING Motorcycle Slip On Exhaust with Muffler for Ninja 400 2016-2023** JFG RACING**$51.44**4.0★57 reviews](https://www.amazon.com/dp/B0BD8NDNFH) [![Lesiyou Motorcycle Muffler Mid Pipe Muffler Adapter Connect Pipe Compatible with Kawasaki Ninja 400 Z400 2018 2019 2020 2021 2022 2023 Ninja 500 2024](https://m.media-amazon.com/images/I/41+DlYLTy-L.jpg)**Lesiyou Motorcycle Muffler Mid Pipe Muffler Adapter Connect Pipe Compatible with Kawasaki Ninja 400 Z400 2018 2019 2020 2021 2022 2023 Ninja 500 2024** Lesiyou**$59.19**4.1★111 reviews](https://www.amazon.com/dp/B0DKXDSR81) [![Exhaust Muffler Carbon Fiber 1.5-2Inlet with Removable DB Killer for Street/Sport Motorcycles and Scooters with 38-51mm Diameter Exhaust Pipes](https://m.media-amazon.com/images/I/41QrLf4tFxL.jpg)**Exhaust Muffler Carbon Fiber 1.5-2Inlet with Removable DB Killer for Street/Sport Motorcycles and Scooters with 38-51mm Diameter Exhaust Pipes** PACEWALKER**$38.16**4.2★1,384 reviews](https://www.amazon.com/dp/B074CVHHGC) [![WATERWICH Motorcycle Muffler Compatible with Kawasaki Ninja 400 Z400 2018 2019 2020 2021 2022 2023](https://m.media-amazon.com/images/I/41wiUDxm3AL.jpg)**WATERWICH Motorcycle Muffler Compatible with Kawasaki Ninja 400 Z400 2018 2019 2020 2021 2022 2023** WATERWICH**$58.66**4.2★117 reviews](https://www.amazon.com/dp/B098DQ96YT) [![Slip on Exhaust for Kawasaki Ninja 400 Z400 2018-2023 Motorcycle Muffler with Removable Baffle Stainless Steel/Aluminum Easy Installation (No Welding)](https://m.media-amazon.com/images/I/41zJvrVMQOL.jpg)**Slip on Exhaust for Kawasaki Ninja 400 Z400 2018-2023 Motorcycle Muffler with Removable Baffle Stainless Steel/Aluminum Easy Installation (No Welding)** YZCHAIN**$48.02**0.0★0 reviews](https://www.amazon.com/dp/B0GBL67G5X) [![autozen Exhaust Muffler Compatible with Kawasaki Ninja 400 Z400 2018 2019 2020 2021 2022 2023 30cm Matte Black with Adapter Connect Pipe Slip-On Motorcycle Exhaust](https://m.media-amazon.com/images/I/41u90D0JemL.jpg)**autozen Exhaust Muffler Compatible with Kawasaki Ninja 400 Z400 2018 2019 2020 2021 2022 2023 30cm Matte Black with Adapter Connect Pipe Slip-On Motorcycle Exhaust** autozen**$48.77**0.0★0 reviews](https://www.amazon.com/dp/B0GXZPP11K) [![PACEWALKER Motorcycle Slip On Muffler 1.5-2 Universal Motorcycle Exhaust with Removable DB Killer for Street/Sport Motorcycles and Scooters Dirt Bike ATV Street Bike 38-51mm Inlet(Titanium)](https://m.media-amazon.com/images/I/31fvrVJ9TpL.jpg)**PACEWALKER Motorcycle Slip On Muffler 1.5-2 Universal Motorcycle Exhaust with Removable DB Killer for Street/Sport Motorcycles and Scooters Dirt Bike ATV Street Bike 38-51mm Inlet(Titanium)** PACEWALKER**$39.57**4.2★23 reviews](https://www.amazon.com/dp/B0F7GZRL1P) [![unrulysoul 38mm-51mm Slip on Exhaust Tips 1.5-2 Motorcycle Muffler Tip Pipe with Dual Outlet for Kawasaki Ninja 400 Z650 ZX6R10R for Honda CBR 500 300R for Yamaha FZ1 250 300](https://m.media-amazon.com/images/I/311xCODjz+L.jpg)**unrulysoul 38mm-51mm Slip on Exhaust Tips 1.5-2 Motorcycle Muffler Tip Pipe with Dual Outlet for Kawasaki Ninja 400 Z650 ZX6R10R for Honda CBR 500 300R for Yamaha FZ1 250 300** unrulysoul**$43.19**3.5★20 reviews](https://www.amazon.com/dp/B0DNFHHVQM) ## **Reviews** What buyers praise and complain about, mined from review topics. ### **What buyers love ** **Audio Quality**15% *“Sounds great”* **Size-Overall**12% *“Fits great”* **Value For Money**12% *“Well worth the money so far”* **Quality-Overall**11% *“Much better performance”* **Assembly/Installation**9% *“Easy to install”* **Noise Level**8% *“The exhaust sounds good”* **Efficiency**4% *“Worked for me”* **Design-Overall**3% *“Looks and sounds great”* **Durability**2% *“Durable”* **Advertised Vs Actual Product**2% *“Looks and works as advertised”* ### **What buyers complain about ** **Noise Level**14% *“Super loud”* **Quality-Overall**9% *“Cheap junk”* **Paint Quality**8% *“Paint and plastic peels after 20 miles”* **Size-Overall**5% *“it didn't fit on my motorcycle so I had to return the item”* **Durability**4% *“Ive just recently broken it in”* **Material Quality**4% *“obviously not carbon fiber”* **Compatibility-Overall**4% *“This will not fit the xpro 150cc dirt bike unless you buy a 38 to 32mm adaptor”* **Mounting**3% *“Difficult to mount”* **Connectivity-Overall**2% *“Nothing to connect to muffler”* **Value For Money**2% *“Expected from a cheap exhaust”* #### **Top return reasons**- Size-Overall60% - Compatibility-Overall14% - Defective Material/Parts4% - Advertised Vs Actual Product3% - Assembly/Installation2% - Value For Money2% - Shape/Style2% - Mounting2% - Functionality-Overall2% - Quality-Overall2%