SRAM/Truvativ X0 X9 39T 120mm BB30 Chainring ModelNumber=31954 BM uses the additive molybdenum

BM uses the additive molybdenum disulfide to repel dirt with its dry-shearing propertym

serial number later than 16T11XXXXXXX

and instructions

but incorporating all the features of the 40 Series headset while offering the perfect balance of performance and value

Disc Center Lock Position Rear Rim inner width range 22-27

SRAM/Truvativ X0 X9 39T 120mm BB30 Chainring ModelNumber=31954 BM uses the additive molybdenumSRAM Truvativ X0 X9 39T 120mm BB30 Chainring. Original equipment on SRAM and Truvativ cranks they also work well with other drive trains. Supplied in TruVativ packaging TECH SPECS Tooth Count 39 Ring Position Type Outer Drivetrain Speeds 10 Chainring BCD 120 Color Black Defined Color Black Material Aluminum