Most people buy a Ninja 400 as their first real bike and move up from there. I went the other direction. I already had a 2022 Yamaha MT-09 SP sitting in the garage, and I went out and bought one of the most popular beginner bikes on the market anyway. Two years and about 4,000 miles later, I can tell you it’s one of the better decisions I’ve made as a rider.
Table of Contents
How I Ended Up on a 400cc Bike
It started with a breakdown. I was doing my own maintenance on the MT-09 SP, made a bonehead move, and suddenly I was stuck waiting on Yamaha to ship a replacement part. Meanwhile, riding season was rolling right along without me.
A friend had organized a covered bridge tour out in Bucks County, Pennsylvania. A full day of back roads, bridges, good company. I thought I was going to miss the whole thing. Renting a bike fell through, and then a small miracle happened: my buddy’s wife couldn’t make the ride and offered to let me borrow her Honda CBR300R.
I spent the whole day ripping that little single cylinder through corners, shifting up and down, working the engine the way you just can’t on a bigger bike. By the time I got home, I knew I wanted something like that in my life permanently. The 300 was a little underpowered for a guy my size, so I started looking at the next step up.
That’s where the Kawasaki Ninja 400 came in.
What the Reviews Said vs. What I Actually Found
I read a lot of reviews before pulling the trigger. The consensus was that it rides more like a street bike than a sport bike, and that turned out to be accurate. The riding position is upright enough to be comfortable, the ergonomics are reasonable, and it doesn’t have you folded up like you’re trying to qualify at Laguna Seca.
It’s not a race replica. It’s not trying to be a ZX-6R or an R6. It’s a bike that’s happy on back roads and doesn’t make you miserable doing it.
After two years, I can confirm all of that holds up.
How I Actually Ride This Bike
I’ve put just under 4,000 miles on the Ninja 400, and pretty much all of it has been on Pennsylvania back roads. Thirty-mile loops. Eighteen-mile loops. The occasional hundred-mile day. Short windows of free time where I want to get out, put some miles down, and get back before anyone notices I was gone.
This bike is perfect for exactly that. It’s the one I grab when the kids haven’t come home from school yet and I’ve got maybe a half hour before the window closes. It fits those gaps better than the MT-09 does.
That said, it’s not strictly a back roads bike. It’ll do highway speeds without hesitation. It’ll get you to work and back. It’ll handle longer trips. Just know that if you need to make a hard pass at speed, you might wish you had more displacement under you.
The One Mod I Made: Coffman Shorty Exhaust
I said I’m mostly a stock bike guy, and I meant it. The only change I’ve made to this Ninja 400 is a Coffman shorty exhaust, which Coffman
sent me at no charge a couple of years ago. Full transparency on that.
I put it on after a friend told me my Ninja 400 sounded like an angry sewing machine. He wasn’t wrong. The stock exhaust is whisper quiet, which is fine if that’s your thing. The Coffman adds a little growl without going overboard. When you’re leaning through corners and shifting through the gears, having that exhaust note in the mix ties the whole experience together. For a 400 parallel twin, it sounds surprisingly good.
The “It’s Only a 400” Conversation
I’m 43, married, three kids. There’s a weird little moment that happens in parking lots when someone asks which bike is yours and you have to point at the small one. You catch yourself saying “it’s only a 400” like you need to explain yourself.
Here’s where I landed on that: once you’ve spent a few hours on this bike on the right roads, you stop caring. You’re having too much fun to worry about what the guy with the liter bike thinks of your displacement.
Ninja 400 vs. MT-09 SP: Which One Do I Ride More?
Honestly? The Ninja 400.
The MT-09 SP is a great motorcycle. It’s my Swiss Army knife bike. It does everything I throw at it and does it well. But on tight back roads, it’s almost too easy. I can run it in first gear through the whole stretch and barely have to think about it. It effortlessly handles the things that make the Ninja 400 exciting.
On the 400, I’m shifting constantly, leaning, working the bike. I’m more engaged. That engagement is what makes it more fun on the roads I actually ride.
When I’ve got a long day ahead, maybe 200 or 300 miles, I take the MT-09. The more upright standard position holds up better for that kind of distance. The Ninja 400 starts getting a little stiff around the 60 to 90 minute mark, mostly in the hips. The bars are lower and the pegs are a little higher than the MT-09, so you’re in more of a crouch than you might expect from a street-oriented bike.
Short rides: Ninja 400, no question. Long haul: MT-09.
Cost of Ownership on the Kawasaki Ninja 400
This is where the Ninja 400 really makes sense as a second bike, or honestly as anybody’s bike.
Insurance is less than half what I pay for the MT-09, and I carry full coverage on both. Fuel range is somewhere around 160 miles before the light comes on, and if I’m watching the display I’ve seen it project over 200 miles on a tank. I basically never think about gas on this bike.
Service intervals are longer than the Yamaha’s, and there’s just less stuff on it to break. No ride-by-wire, no traction control, no ride modes. Traditional throttle cable. The simplicity keeps costs down and keeps your anxiety down.
Used prices on Facebook Marketplace run anywhere from $2,500 for bikes with minor cosmetic damage to around $5,000 for clean examples. They’re everywhere.
Would I Buy Another Ninja 400?
Without hesitation. Kawasaki even earned some points with me on the warranty side. I was out riding in the low 30s one morning, the cold made the plastic brittle, my pant leg caught a rear piece and snapped it off. I figured I’d be paying out of pocket. The dealership submitted it to Kawasaki and they covered it, no argument.
If someone stole this bike tomorrow, I’d replace it.
Ninja 400 vs. Ninja 500: Worth the Upgrade?
The 500 is getting more popular, same as the 300 gave way to the 400 before it. For me personally, the 400 is enough. The price difference doesn’t feel justified for the way I use it, and good used 400s are everywhere. If you’re starting fresh and the 500 is calling your name, I’m not here to talk you out of it. But if you’re on the fence, don’t sleep on the 400.
Final Thoughts
Two years in, this is still one of my favorite bikes to throw a leg over. It’s cheap to own, easy to ride, and genuinely fun in a way that has nothing to do with horsepower. If you’re thinking about adding one to your garage, I don’t think you’ll regret it.
If you’re already a Ninja 400 owner, I’d love to hear where it fits in your rotation. Drop a comment on the video.
If you got something out of this, here are a few ways to keep up with what I’m doing:
Subscribe to the WaltInPA YouTube channel for more long-term reviews and back road riding content.
If this post helped you make a decision or gave you something to think about, share it with a friend who rides. It helps more than you know.
And come hang out on the WaltInPA Discord. Good group of riders in there. No nonsense.
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