I Tested Fixed Gear Conversion Kit and the Results Were Impressive

This beast earned its spot at the top of the speed hierarchy purely through its sheer 2000W output power. If you want to blast down the pavement without breaking a sweat, this motor setup delivers rapid acceleration. I would argue that calling this a traditional conversion kit is a bit generous, since you are essentially strapping a motorcycle engine to a bicycle.

You get a 5-speed gear system along with a fixed-speed cruise function for long stretches of open road. But do keep in mind that this much power requires a sturdy frame and a strong stomach. In my opinion, the heavy battery requirements and sheer bulk make this an overkill choice for simple city commuting.

This kit is best for traditional cyclists who want to convert a standard multi-speed frame into a purist fixie without replacing the entire wheel. What won me over is how neatly the single cassette cog set bridges the gap between modern multi-speed hubs and classic track geometry. I consider this my top overall recommendation because it solves a very specific drivetrain headache with simple hardware.

The silver finish adds a clean aesthetic to vintage builds. You do need to ensure your 7 to 10 speed hub matches the spacer tolerances before installation. But once fitted, it delivers that direct, connected pedal feel every fixed-gear enthusiast craves.

The most unexpected feature of this little sprocket is its surprisingly robust metal construction built to handle heavy pedal torque without stripping. When you look closely at budget drivetrain parts, they usually feel flimsy. But this 14T flywheel punches well above its weight class for casual riders. I find this design appealing if you want a reliable setup that lets you coast without locking your legs in place.

It suits casual weekend cruisers rather than hardcore track riders. You will not get a true fixed gear experience here since it relies on a freewheel mechanism. But for a simple single-speed conversion, it gets the job done quietly and efficiently.

The most common buyer complaint about this winter kit revolves around the heavy overall weight of the motorized wheel assembly. Yet, when you balance that against its traction capabilities, the compromise makes sense for harsh weather. I would place this firmly in the niche category for riders who refuse to let snow stop their commute.

The 1500W hub motor powers through slush and deep powder when standard tires would spin out. You also get five adjustable gears to help manage battery draw on freezing days. Just remember to check your local regulations before taking a high-wattage motor onto public paths.

Compared to the heavy motorized kits ranked higher up this list, this simple crankset strips away the electrical bulk to focus purely on human power. It sits just below the top fixed gear conversion pick as a great complementary drivetrain upgrade. I lean toward this option if your current chainline is bent or your chainrings are worn down to shark teeth.

The 130BCD square taper interface fits a wide variety of older frames. At 165mm in length, the crank arms provide good clearance through tight street corners. You do need to verify your bottom bracket spindle length first, but otherwise, it is a straightforward upgrade.