Suzuki fans have always been hardcore. Back in DeCoster’s heyday in the early ’70s, some riders had an almost spiritual love for the brand. It was easy back then; Suzuki won more than any other manufacturer in those days. It’s harder now. The RM-Z250’s stats in particular have been a bit depressing over the past 10 years. Win Outdoor Championships: 0. Win Regional Supercross Championships: 0. Winning outdoor national competitions: 0. Win Regional Supercross Races: 2. However, the RM-Z250 is still loved by many. This is the bike for the purists. It’s cheap, reliable, performs well, and doesn’t have the complications of electric starters and batteries.
The 2022 Suzuki has a lot to offer, but sheer performance isn’t on the list. Peak output is under 40 horsepower, compared to around 44 horsepower with the KTM motor. The good news is that the motor hasn’t been replaced in a while, and there are plenty of shops out there that know how to get the most out of it. For this project, we chose the path of least resistance and asked Pro Circuit to help. We know they know what to do.
When we say the RM-Z motor hasn’t changed in a while, we mean it hasn’t changed it is good. It did get some new high-end parts for 2019 and more extensive changes for 2016. Sadly, these updates aren’t enough to keep the Suzuki up to speed with the other models. The modifications Pro Circuit has been making have had a bigger impact. They have four main components: cylinder head
The only other part of the motor we changed was the clutch, replaced by a Hinson basket with Pro Circuit springs.
We still love how the Suzuki RM-Z250 handles. Yes, we know it’s a bit heavy for a bike without electric start. Yes, we know it has an old-school feel to it. But, to be honest, we’re a little bit Like
You can also make some progress in the chassis department with different engine mounts. The stocker is very sturdy and there are replacements for the factory chassis parts (FCP) to make the frame more compliant. Replacing the stock bar on the Mika Pro Series handlebars and having MotoSeat rebuild the saddle also helped make the Suzuki a more comfortable bike.
Finally, do we have a car that will end Suzuki in pro racing Dry bikes? No, but we do have a bike that is definitely rideable. The RM-Z250 went from being a penalty bike in the 250 class to a machine capable of even winning at the athlete class. We closed the gap with the Austrian-powered 250 motocross bike in motor performance, and almost all riders would agree that the Pro Circuit RM-Z250 handles better than the stock KTM/Husky/GasGas.
Having said that, Suzuki haters will still point out that this bike doesn’t have electric start and it’s unfair to compare a modified RM-Z250 to a stock bike. Even though you can buy a Suzuki for a few thousand dollars less, we certainly put those thousand dollars back on the bike.
If you’re pressing buttons to do math on your calculator, you’ll find that the numbers aren’t friendly to projects like this. We are fine. If you’re a fan of motocross history and want to preserve your personal Suzuki heritage, it’s not about the numbers and we love the results.