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 spacer, 6061 aluminum caps and R12 bearings to keep your pedal action nice and smooth.
SPECIFICATIONS:
- SIZES: 160mm, 165mm, 170mm, 175mm
- 4130 chromoly custom shape with oversize welds
- Post weld Death Proof heat treatment
- 1-piece CNC spindle bosses
- Hollow 19mm / 48 spline spindle
- WEIGHT: 31.4 oz
- COLORS: Black
INCLUDED BB SPECIFICATIONS:
- 19mm mid
- Crush proof steel inner spacer
- 6061 Alloy Caps
- R12 bearings
- Weight: 7.1 oz
- Colors: Black