Direct Mount Chain Ring

These direct mount chainrings fit the HEIR cranksets.  Lightweight stamped alloy construction.

Determining Chain Ring Offset

• If your bike has 148mm rear spacing (Boost), choose 3mm chain ring offset
• If your bike has 135mm or 142mm rear spacing, choose 6mm chain ring offset (most kids bikes fall under this category).

Compatibility

These chainrings are compatible with:

• HEIR Direct Mount Cranks
• HEIR Carbon Cranks
• Zulu Three
• Zulu Four
• Zulu Five
• Bravo Two
• Bravo Three
• Bravo Four

Not compatible with Alpha Series bikes.