Replacement/upgrade arm for Gamut guides
2
arm Boomerang for lightweight racing applications
BB: bottom bracket mount
ISCG: 59.2mm
BCD 3
tab direct
mount bottom bracket shell with adapter included
ISCG
05: updated/larger 73mm
BCD 3
tab direct
mount bottom bracket (works with standard BB, oversized BB and BMX/American shells)
P20s fits: 32
34t chainring
P30s fits: 34
36t chainring
P38s fits: 36
38t chainring
P20s Dual fits: 22
24t/32
34t chainring combo
P30s Dual fits: 22
24t/34
36t chainring combo
No hardware included with boomerangs