What conversions or mods would be needed to make a Roketa 74 (150cc) scooter go 55mph?

by Anonymous

I haven't bought the scooter yet. I want to fully understand what will be necessary to make it go 55mph. (It's gonna have to for my needs/roads). If it's too complicated for me to make these changes, then I might choose a different scooter. Comments? Suggestions?

Comments for What conversions or mods would be needed to make a Roketa 74 (150cc) scooter go 55mph?

Click here to add your own comments

Sep 21, 2011
55 is more than possible AND SAFE!
by: Alan85

Ok, don't listen to those other comments I install racing mods on 150cc bike all the time, and they are capable of doing 70mph with the right parts. start by installing a large 115mm variator with a heavy roller 12 to 14grams. then remove the air box and secondary air intake (if applicable) and replace it with an uni filter pod and re-jet your carb if needed. then install a high flow MRP pipe. your bike should do 65mph or better and 50mph up a hill.

As for it being "unsafe", riding any two wheel vehicle is about as safe as riding a mechanical bull in the middle of busy intersection.

Jul 17, 2011
Ride it like its stolen!
by: GrowAPair

My 150 will go 55 all day on level ground. Hills are a different story. Make sure it is running properly. Cars, traffic and wind don't bother me or anyone who knows how to ride.

The idea that bigger and heavier bikes are needed to ride in the real world is perpetuated by those who can't ride. In the 60s and early 70s the roads were filled with "little" Honda 50s and such. I remember a guy that rode to work every day on a Rupp Roadster 5hp minibike.

My Roketa took some tweaking to run properly. Removing the EGR was a big plus, not that EGR is bad but it created a vacuum pulse that disrupted the CV carb slide. Your scooter should accelerate smoothly to full speed and remain these without any missing.

Check the scooter forums for good info. Ride it like it's stolen!

Jul 04, 2011
55 on a 150 Is Too Fast
by: Anonymous

To go 55 on 150 is possible but uncomfortable and unsafe. You'll be really pushing it. Try variator mods, fairly easy, more air in tires, do tires, at your own risk, larger piston cylinder head carburetor main jet, and muffler. About 500 bucks plus a lot of work.

I wouldn't take a 150 on the highway... trucks and crosswinds will terrify you for good reason. It's dangerous. You need a heavier bike to handle the air currents. If you only need 55 occasionally you can research nox injectors. Do your home work.

Apr 04, 2011
Get a bigger scooter
by: Bill

If you expect to travel at 55 mph regularly then get a 250cc scooter (minimum) or larger. Most 150s will strain to keep 55 mph on a flat road; uphill will slow it down into the 35-50 mph range depending on the slope.

Click here to add your own comments

Join in and write your own page! It's easy to do. How? Simply click here to return to Scooter Questions - Scooter Conversions, Modifications & Accessibility.

When you're done here, you may also be interested in reading some of these popular pages:

If you like to talk scooters, check out our motor scooter forums!

Battery Tender Junior in package

A battery tender like the Battery Tender Jr. can make all the difference in whether your scooter will start right up each spring, after being stored for months.

Just about every scooter owner needs to have a battery tender, sometimes called a trickle charger. Unless you are lucky enough to live in a climate where you can ride all year long, chances are your scooter will be put on ice, figuratively-speaking, for at least a couple months every winter.

One of the key steps in winterizing a scooter is to protect your battery from draining during its "rest" period. This can – and will – happen if you leave your battery sitting untended in your cold scooter over the winter, even if it's in a garage or shed.

Read our review or go right to Amazon.com to buy this highly recommended Battery Tender Jr NOW...


ATTENTION! I have had to delete the Scooter Forum for this site, unfortunately. Despite my best efforts, I could not adequately prevent daily attacks by hackers and spammers. Even though most of their posts did not go public, they still cluttered up my website host's server space, jeopardizing my account. I appreciate everyone's contributions over the past few years and I apologize for having to do this.

Wondering why your scooter question never got posted?

Chances are, there is a good reason. Did you...

If you "checked yes" on any of the points above, then I've deleted your post. Sorry, but I have standards. Feel free to re-submit, following the instructions I have everywhere on the site.

Also... all submissions have to be reviewed by me, and I am currently backlogged. Comments go live without approval, but still take 30 to 60 minutes to show up, so don't repost them, please.

This Week's Highlights

Share Your Scooter Blog Here
Your Help Needed!

We have lots of unanswered questions... can you help? Also, check out our newest eScooter Club members We are growing every week!

Keep Up to Date

Follow us on our Facebook Fan Page Follow our updates on Twitter
Subscribe to my motor scooter blog Subscribe to our RSS feed in your feed reader

Help Us Grow

Support This Site

I support this site by using affiliate marketing and running Google ads. I earn a small commission when you purchase items here, which helps to keep the site afloat. Thank you for your support.

XML RSSSubscribe To This Site

follow us in feedly
Add to My Yahoo!
Add to My MSN
Subscribe with Bloglines