Rear Wheels

What is a cassette rear wheel and what is its main purpose?

This is the classic BMX rear wheel. The hub contains a freewheel mechanism (cassette). As soon as you stop pedaling, it clicks. The big advantage is the direct engagement: as soon as you pedal, the wheel accelerates immediately without slack (play). It is lighter than a freecoaster.

How is a rear wheel constructed?

In addition to the rim and spokes, the hub is more complex here:

Driver

A one-piece cog (usually 9 teeth) that is firmly connected to the hub.

Pawls

Small spring-loaded teeth inside that ensure drive and the typical clicking sound.

Double Wall Rim

Standard for rear wheels to absorb impacts during landings.

Spokes & Nipples

Connect cassette and rim. Standard is 36 spokes, mostly crossed 3 times for maximum stability.

What types/variants are there?

Pay special attention to the drive side:

RHD (Right Hand Drive)

Chain runs on the right. Standard on 90% of all bikes.

LHD (Left Hand Drive)

Chain runs on the left. Useful if you predominantly grind on the right side (to protect the sprocket and driver).

What materials are used?

Chromoly Steel (CrMo)

Essential for the 14mm hollow axle and the driver to withstand the immense forces of pedaling and grinding.

Aluminum

Used for the hub shell and the rim.

Which rear wheel is right for me?

The decision depends on your grinding behavior and sound preference:

How do I maintain a cassette wheel?

• Regularly check spoke tension, as the rear wheel bears the most load.
• Keep the chain clean and oiled to protect the driver.
• If the driver "slips" (skips), the pawls or springs are usually worn out and need to be replaced.

What do the specifications mean?