Chainring BCD 104mm. MPN: 11.6215.188.430 - SRAM - Mountain Chainring - Chainring. SRAM Mountain Chainrings. Chain Compatibility Shimano 10,SRAM 10. We are out East at 3063 Columbia Ave. - Lancaster PA, 17603 & out West at 3225 Grande Vista Dr. - Newbury Park, CA 91320 & 165 Design Place, #105 - Sparks, NV, 89441.