Amazon.com : JGbike Crank Arm Set Mountain Bike Crankset Arm Set 170mm 104 BCD with 68 73 Bottom Bracket Kit and Chainring Bolts for MTB BMX Road Bicyle,Compatible with Shimano,SRAM,FSA, Gaint :
BMX Crank Length Guide (165mm, 170mm, or 175mm?)
DK SOCIAL 3-Piece Chromoly 170mm BMX CRANKS BLACK 616043824802 | eBay
Hawkeye Pro GXP Bmx Crankset 19mm Matte Black | Sgvbicycles – SGV Bicycles
Odyssey Calibur V2 170mm Rust Proof Black BMX cranks buy in USA