Shimano SM-CRM96 XTR Chainring - Direct Mount - Shimano - 55mm - Round - 36T - 12-speed - Aluminium YGroup_7412311457837 the bike can be locked

the bike can be locked to the rack and the rack can be locked onto the roof racks

Volume adjustability: Not required on a coil spring

BB Type: External Cup / PF92

Materials / construction: Lightweight machined steel unibody mounted to an alloy carrier

The Park SR-12

Shimano SM-CRM96 XTR Chainring - Direct Mount - Shimano - 55mm - Round - 36T - 12-speed - Aluminium YGroup_7412311457837 the bike can be lockedLightweight, direct mount, and equipped with Dynamic Chain Engagement technology for best in class retention, the reinforced SM CR96 chainring is impact resistant, compatible with XTR cranksets, and offered in sizes from 28t to 36t in two tooth increments. Features Dynamic Chain Engagement tried and true Dynamic Chain Engagement keeps the chain glued to the ring Ring sizes available in 28t to 36t for compatibility with all XTR drivetrain and rider