OK, today, let’s talk about my Yamaha SR400. I was itching to find out just how fast this thing could go.

First, I warmed up the bike for a good while, making sure everything was running smooth. This bike’s got a 3.2-gallon tank, and I was getting around 66 miles per gallon, which is pretty sweet for long rides. The seat’s comfy enough for cruising around town, but I was wondering how it’d feel at higher speeds. The bike has 22.93 HP, which isn’t a ton, but it is good for city riding.
So, I took it out to a long, straight stretch of road where I could really open it up. You know, the kind where you can see for miles and there’s no one around. Started off slow, getting a feel for the bike as I shifted through the gears. It’s a five-speed, and each gear pulled nicely.
As I got into the higher gears, the bike started to vibrate a bit more, especially when I pushed past 65 mph. It wasn’t too bad, but noticeable. I could feel the single-cylinder engine working hard. The SR400 has a redline of 7,000 rpm, and I was curious to see how close I could get.
- First gear: Zippy, good for getting off the line.
- Second and third: Smooth, perfect for cruising around town.
- Fourth gear: This is where it started to get interesting. The bike was really moving now.
- Fifth gear: All out, pushing it to the limit.
I managed to hit around 80 mph without too much drama. I’ve heard some folks say they’ve gotten it up to 90 mph, but I wasn’t about to push it that hard on the public road. To be honest, the bike felt best around 70 mph or below. That’s where it’s really in its element.
One thing I’ve been thinking about is swapping out the stock exhaust. I bet with a good aftermarket exhaust, it might sound even better and maybe even give a little extra oomph. It’s on the to-do list.

At the end of the day, the SR400 isn’t built for breaking speed records. It’s more of a classic, stylish bike that’s fun to ride and easy to handle. But it was cool to see what it could do when you really push it. Plus, it’s a real looker, and it brings back that vintage ’70s vibe.
Conclusion
If you’re looking for a speed demon, this ain’t it. But if you want a reliable, good-looking bike that’s perfect for cruising and has a bit of pep, the SR400 is a solid choice. Just don’t expect to be winning any races!