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BMX Race Hubs Spare Parts

Q: What parts are in this category?

Hub spares are about two things: Maintenance and Gear Ratio Tuning. Cogs (Ritzel) The rear gear. Changing your cog size (e.g., from 16T to 15T) is the easiest way to adjust your gear ratio for different tracks. Standard: Shimano-compatible "Slide-On" cogs are the norm in BMX Racing. Pawls & Springs (Sperrklinken) The heart of the engagement. If your hub slips or skips, the pawls or springs are likely worn or sticky. Axle Nuts & Bolts Titanium upgrades or replacements for stripped bolts.

Q: Cog Compatibility: Standard vs. Splined

Not all cogs fit all hubs. Check the interface: Shimano Standard: The most common. A splined interface with one wider groove. Fits Box, Onyx, Shimano, etc. Threaded (Old School): Screw-on freewheels (rare on modern race bikes, found on Mini bikes). Specific (e.g., Onyx Ultra SS): Some high-end hubs require specific cog shapes (e.g., Onyx uses standard Shimano, but check width compatibility).

Keep your wheels rolling fast and engaging instantly with BMX Race Hub Spare Parts. This category contains the most important tuning part for racers: Rear Cogs (Ritzel) to adjust your gear ratio. We also stock Drivers, replacement Pawls, Axle Bolts and more.

BMX Race Hubs Spare Parts FAQ

BMX Race Hubs Spare Parts Range

Radio Bikes "Helium Expert" BMX Race Dropout Axle Adapter

0.05 kg

27.69 EUR

Onyx "Aluminium" Axle (20mm)

0.2 kg

48.70 EUR

Inspyre Bicycles "Brown" BMX Race Freewheel

0.14 kg

12.56 EUR

Meybo "HSX Aluminum" Axle (Rear)

0.06 kg

41.97 EUR

Meybo "LB" Driver Clipper

0.14 kg

41.97 EUR

Radio Bikes "Helium Pro" BMX Race Dropout Axle Adapter

0.2 kg

54.58 EUR

Radio Bikes "Solar" BMX Race Dropout Adapter

0.2 kg

31.05 EUR

Onyx "Aluminium" Axle (15mm)

0.2 kg

48.70 EUR

Meybo "HSX Carbon" Axle (Rear)

0.2 kg

54.58 EUR

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BMX Race Hubs Spare Parts FAQ

What parts are in this category?

Hub spares are about two things: Maintenance and Gear Ratio Tuning.

Cogs (Ritzel): The rear gear. Changing your cog size (e.g., from 16T to 15T) is the easiest way to adjust your gear ratio for different tracks.
Standard: Shimano-compatible "Slide-On" cogs are the norm in BMX Racing.
Pawls & Springs (Sperrklinken): The heart of the engagement. If your hub slips or skips, the pawls or springs are likely worn or sticky.
Axle Nuts & Bolts: Titanium upgrades or replacements for stripped bolts.

Cog Compatibility: Standard vs. Splined

Not all cogs fit all hubs. Check the interface:

Shimano Standard: The most common. A splined interface with one wider groove. Fits Box, Onyx, Shimano, etc.
Threaded (Old School): Screw-on freewheels (rare on modern race bikes, found on Mini bikes).
Specific (e.g., Onyx Ultra SS): Some high-end hubs require specific cog shapes (e.g., Onyx uses standard Shimano, but check width compatibility).

Maintenance Tip: The Sound of Speed

If your cassette hub suddenly becomes quiet or skips, old grease might have glued the pawls shut. Clean the driver mechanism and use light oil or specific pawl grease. Never use thick bearing grease on pawls!

What do the specifications mean?

Specification	Explanation	Examples/Available
Teeth (T)	Number of teeth. Changes gearing.	14T, 15T, 16T, 17T, 18T
Material	Cog material.	Aluminum (Light), Steel (Durable)
Standard	Mounting interface.	Shimano Spline, Threaded