Profile Elite 40t BMX Chainring - Black - 104mm 4-bolt - USA Made 3.00 The hub also features ISO

The hub also features ISO Disc Brake compatibility

The axle is 180mm end to end

Evo-Guard inner pad

centrally located vertical support counteracts spoke loads and provides torsional rigidity

Profile Elite 40t BMX Chainring - Black - 104mm 4-bolt - USA Made 3.00 The hub also features ISOCrafted from high grade 7075 aircraft aluminum billet using CNC machining, this chainring features a reversible design with an offset centerline, allowing precise adjustment of your chainline. It fits a 104mm bolt circle diameter with a 4 bolt pattern. It has 3 32 teeth for use with most race or MTB chains. Profile chainrings are MADE IN THE USA! Size: 40t Color: Black