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Cranks have either four or five bolt holes for chainring attachment. This is also known or often called the spider. A 4 bolt chainring must be ran with a crank that has 4 bolts. It will not work on cranks with 5 bolts and vice-versa. Four bolt Chainrings are popular with full size bmx racing bike setups, 5 bolt generally found on smaller bikes with shorter cranks.
BMX Race Chainrings 4 Bolt | Rollout Calculator
Showing 1 to 41 of 41 Products
$23.95MCS 4-Bolt Chainring (Black)
$23.95MCS 4-Bolt Chainring (Blue)
$44.95Answer Mini Sprocket (Black)
$23.95MCS 4-Bolt Chainring (Red)