Subrosa Rose BMX Cranks Crank Arm Length:170mm Box Four™

Box Four™

1 1/2" - 1 1/8" Upper with 1 1/2 Lower

3° Upsweep

lightweight pads that feature G-Form's SmartFlex impact absorbing technology

41-Thermal Lifetime Warranty

Subrosa Rose BMX Cranks Crank Arm Length:170mm Box Four™The Subrosa Rose BMX Cranks at J&R Bicycles are built tough out of specially treated alloys and smart engineering and feature an included bottom bracket. This slim design with a custom shape is constructed from 4130 chromoly that has been heat treated post weld with the Death Proof treatment. The one piece spindle bosses are CNC machined add even more strength and so do the oversized welds throughout. The included BB features a crush proof steel inner