Ninja 400 Exhaust
FailShoppers spend an estimated $9K a year here, so Ninja 400 Exhaust is a Fail.
- Flapen Score
- 43 / 100Ranks 5,360 of 7,287 Automotive niches · −6 vs the category median of 4943
- Market size
- $9K/yr12K searches / yr
- 90-day growth
- +32.6%search demand this quarter
- Competition
- 67%top-5 click share · 13 brands · 17 sellers
Flapen Score
Ninja 400 Exhaust against its category
The dotted line is the Automotive average. Past it, Ninja 400 Exhaust is stronger. Inside it, weaker.
Market
The Ninja 400 Exhaust market on Amazon at a glance
Shoppers on Amazon United States searched for Ninja 400 Exhaust 12K times last year and spent an estimated $9K. The top 5 brands take 77% of clicks. Demand peaks in Apr–Jul–Aug–Sep. Flapen scores it 43 out of 100, a Fail.
01 · Demand
An estimated 1.4% of those searches ended in a purchase.
Shoppers searched for this 12K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 1.4% of those searches ended in a purchase. Searches in the last 90 days moved +32.6% against the 90 days before. Searches, conversion and average price together put the market at an estimated $9K a year.
- Searches, last 12 months
- 12K
- Growth, 90 days vs prior 90
- +32.6%
- Conversion, latest week
- 1.4%
- Market size, estimated
- $9Ka year
- Peak month
- July2.6× the quietest month
- Top search term
- ninja 400 exhaust8K searches a year
02 · Price
A sale here is worth $55.73.
Listings sell for $55.73 on average, from $24.82 to $117.35. Amazon reports units sold in ranges. This niche sold 100 to 250 a year. The average listing sells 0 to 100 of them. At $55.73 that is $0 to $6K a year per listing.
- Average price
- $55.73inside the $15 to $100 sweet spot
- Price range
- $24.82–$117.35
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 100–250
- Units per listing a year
- 0–100
- Revenue per listing a year
- $0–$6K
- Returns
- 7.6%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is low.
71% of listings pay for placement with sponsored ads. 71% ship with Prime. On an average day, 6.6% of listings are out of stock. The average listing ranks #447 within Parts. It carries 115 reviews at 4.18 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 71%
- Prime listings
- 71%
- Out of stock, average day
- 6.6%
- Average rank
- #447in Parts
- Average rating
- 4.18 starsAmazon United States average 4.42 stars
- Average reviews
- 115per listing
- Listings tracked
- 17
04 · Newcomers
0 of last year's 6 launches cleared the first-year sales bar.
6 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 44 months on average, so the names here are settling in.
- Launched, last 12 months
- 6
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 44 months
Products
Top Ninja 400 Exhaust products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 9, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
JFG RACING Motorcycle Slip On Exhaust with Muffler for Ninja 400 2016-2023
- Price
- $51.44
- Rating
- 4.0/5
- Reviews
- 57
- Age
- 3y ago

Lesiyou Motorcycle Muffler Mid Pipe Muffler Adapter Connect Pipe Compatible with Kawasaki Ninja 400 Z400 2018 2019 2020 2021 2022 2023 Ninja 500 2024
- Price
- $59.19
- Rating
- 4.1/5
- Reviews
- 111
- Age
- 1y ago

Exhaust Muffler Carbon Fiber 1.5-2Inlet with Removable DB Killer for Street/Sport Motorcycles and Scooters with 38-51mm Diameter Exhaust Pipes
- Price
- $38.16
- Rating
- 4.2/5
- Reviews
- 1,384
- Age
- 8y ago

WATERWICH Motorcycle Muffler Compatible with Kawasaki Ninja 400 Z400 2018 2019 2020 2021 2022 2023
- Price
- $58.66
- Rating
- 4.2/5
- Reviews
- 117
- Age
- 5y ago

Slip on Exhaust for Kawasaki Ninja 400 Z400 2018-2023 Motorcycle Muffler with Removable Baffle Stainless Steel/Aluminum Easy Installation (No Welding)
- Price
- $48.02
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 6mo ago
Trending
estimated 90-day click momentum
Black Slip-On Exhaust Muffler compatible with GY6 Ninja400 Z400 R3 MT-03
- Price
- $53.98
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 1mo ago

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
- Price
- $48.77
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 2mo ago

YIPONYT Universal Motorcycle Exhaust 1.42-2 Carbon Fiber Slip on Exhaust Muffler Diameter 51mm Exhaust for Motor Dirt Bike Scooters with Complete Accessories Black
- Price
- $39.88
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 8mo ago

Motorcycle Exhaust Muffler Black Used For Ninja 400 R3CB650R
- Price
- $117.35
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 9mo ago

Slip on Exhaust for Kawasaki Ninja 400 Z400 2018-2023 Motorcycle Muffler with Removable Baffle Stainless Steel/Aluminum Easy Installation (No Welding)
- Price
- $48.02
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 6mo ago
Newest
by launch date
Black Slip-On Exhaust Muffler compatible with GY6 Ninja400 Z400 R3 MT-03
- Price
- $53.98
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 1mo ago

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
- Price
- $48.77
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 2mo ago

Muffler Exhaust Mid Pipe For NINJA400 Z400 EX400
- Price
- $96.51
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 5mo ago

Slip on Exhaust for Kawasaki Ninja 400 Z400 2018-2023 Motorcycle Muffler with Removable Baffle Stainless Steel/Aluminum Easy Installation (No Welding)
- Price
- $48.02
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 6mo ago

YIPONYT Universal Motorcycle Exhaust 1.42-2 Carbon Fiber Slip on Exhaust Muffler Diameter 51mm Exhaust for Motor Dirt Bike Scooters with Complete Accessories Black
- Price
- $39.88
- Rating
- 0.0/5
- Reviews
- 0
- Age
- 8mo ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 67% of clicks. Leaders hold, but buyers still shop past them.
Brands
13 falling
Sellers
17
Est. top-5 brand share
77%
Top 20: 100%
Est. top-5 click share
67%
Top 20: 100%
Open market
18%
- PACEWALKER22%
- JFG RACING20%
- Lesiyou16%
- WATERWICH10%
- Generic9%
- YZCHAIN5%
Demand
Ninja 400 Exhaust search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Apr, Jul, Aug, Sep · busiest ÷ quietest = 2.6×
Search terms
Top Ninja 400 Exhaust search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- ninja 400 exhaust8K/yr
- ninja 400 slip on exhaust2K/yr
- kawasaki ninja 400 exhaust2K/yr
Reviews and returns
What reviews say buyers love and hate about Ninja 400 Exhaust
We read the reviews and the return reasons for every product selling here.
“Super loud”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
18 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Ninja 400 Exhaust questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









