Surly Cross Check 52cm Frameset Gloss Black MFPN=380-0644K These bolts are designed as

These bolts are designed as a direct fit for 30 Tooth x 104 BCD threaded chainring

Forged and CNC machined 6061/T6 aluminum cups

Shifter Compatibility SRAM 11 sp

41 Spindle Interface Type Shimano Hollowtech II Spindle Interface Type FSA MegaExo Spindle Interface Type FSA MegaExo Light Spindle Interface Type RaceFace EXI Weight 60 BB Shell Width (mm) 86 BB/Frame Interface BB86

Surly Cross Check 52cm Frameset Gloss Black MFPN=380-0644K These bolts are designed asSurly Cross Check 52cm Frameset Gloss Black. The Surly Cross Check. A cross bike by design but with a strong utilitarian appeal. Comfortable versatile tough as nails. Works with all single double and triple road or mountain cranksets Includes Surly seatpost clamp and dropout adjusting screws 100% Surly 4130 chromoly frame main triangle is double butted; 1 1 8" threadless brazed chromoly fork Bosses front and rear for cantilever or linear pull brakes