- Bike Checks
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|Product||Fire Eye CR4 Chainring|
|Miscellaneous||Fire Eye CR4 Chainring 2012. Chainrings - MTB. As rear cogs get smaller and smaller, so do the front ones. The CR4 series are for those peeps who like the extra BB clearance or if you'd just like to shave some weight. But we have to admit that we can't take full credit for this product. We h .... .|